doi: 10.1103/PhysRevLett.128.191802.
Tests of Lepton Universality Using B^{0}→K_{S}^{0}ℓ^{+}ℓ^{-} and B^{+}→K^{*+}ℓ^{+}ℓ^{-} Decays
R Aaij
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, A S W Abdelmotteleb
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, C Abellán Beteta
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, F Abudinén
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, T Ackernley
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, B Adeva
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, M Adinolfi
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, J Albrecht
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, F Alessio
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, M Alexander
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, A Alfonso Albero
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, Z Aliouche
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, G Alkhazov
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, S Amato
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, W Barter
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, M Bartolini
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, J M Basels
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, S Belin
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, V Bellee
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, K Belous
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, I Belov
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, I Belyaev
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, G Bencivenni
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, E Ben-Haim
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, A Berezhnoy
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, R Bernet
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, D Berninghoff
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22
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, A Smetkina
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3
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1
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7
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11
, F J P Soler
14
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17
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17
, F L Souza De Almeida
19
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19
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12
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10
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14
, F Stagni
13
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11
, S Stahl
13
, S Stanislaus
44
, O Steinkamp
3
32
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24
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12
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13
25
, D Strekalina
32
, F Suljik
44
, J Sun
36
, L Sun
42
, Y Sun
47
, P Svihra
16
, P N Swallow
43
, K Swientek
34
, A Szabelski
76
, T Szumlak
34
, M Szymanski
13
, S Taneja
16
, A R Tanner
6
, M D Tat
44
, A Terentev
32
, F Teubert
13
, E Thomas
13
, D J D Thompson
43
, K A Thomson
4
, H Tilquin
31
, V Tisserand
7
, S T'Jampens
57
, M Tobin
56
, L Tomassetti
22
, X Tong
75
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30
, D Y Tou
8
, E Trifonova
32
, S M Trilov
6
, C Trippl
29
, G Tuci
52
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29
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1
13
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76
13
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23
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32
, A Usachov
1
, A Ustyuzhanin
26
45
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23
, A Vagner
81
, V Vagnoni
53
, A Valassi
13
, G Valenti
53
, N Valls Canudas
51
, M van Beuzekom
1
, M Van Dijk
29
, H Van Hecke
63
, E van Herwijnen
32
, M van Veghel
65
, R Vazquez Gomez
15
, P Vazquez Regueiro
5
, C Vázquez Sierra
13
, S Vecchi
22
, J J Velthuis
6
, M Veltri
21
, A Venkateswaran
25
, M Veronesi
1
, M Vesterinen
2
, D Vieira
11
, M Vieites Diaz
29
, H Viemann
87
, X Vilasis-Cardona
51
, E Vilella Figueras
4
, A Villa
53
, P Vincent
8
, F C Volle
20
, D Vom Bruch
27
, A Vorobyev
17
, V Vorobyev
46
, N Voropaev
17
, K Vos
66
, R Waldi
23
, J Walsh
35
, C Wang
23
, J Wang
75
, J Wang
56
, J Wang
58
, J Wang
42
, M Wang
58
, R Wang
6
, Y Wang
78
, Z Wang
3
, Z Wang
58
, Z Wang
52
, J A Ward
2
73
, N K Watson
43
, S G Weber
8
, D Websdale
31
, C Weisser
62
, B D C Westhenry
6
, D J White
16
, M Whitehead
6
, A R Wiederhold
2
, D Wiedner
12
, G Wilkinson
44
, M Wilkinson
25
, I Williams
18
, M Williams
62
, M R J Williams
59
, F F Wilson
72
, W Wislicki
76
, M Witek
41
, L Witola
23
, G Wormser
20
, S A Wotton
18
, H Wu
25
, K Wyllie
13
, Z Xiang
52
, D Xiao
78
, Y Xie
78
, A Xu
75
, J Xu
52
, L Xu
58
, M Xu
78
, Q Xu
52
, Z Xu
7
, Z Xu
52
, D Yang
58
, S Yang
52
, Y Yang
52
, Z Yang
75
, Z Yang
47
, Y Yao
25
, L E Yeomans
4
, H Yin
78
, J Yu
64
, X Yuan
25
, O Yushchenko
24
, E Zaffaroni
29
, M Zavertyaev
86
, M Zdybal
41
, O Zenaiev
13
, M Zeng
58
, D Zhang
78
, L Zhang
58
, S Zhang
64
, S Zhang
75
, Y Zhang
75
, Y Zhang
44
, A Zharkova
32
, A Zhelezov
23
, Y Zheng
52
, T Zhou
75
, X Zhou
52
, Y Zhou
52
, V Zhovkovska
20
, X Zhu
58
, X Zhu
78
, Z Zhu
52
, V Zhukov
33
37
, J B Zonneveld
59
, Q Zou
56
, S Zucchelli
53
, D Zuliani
40
, G Zunica
16
; LHCb Collaboration
Affiliations
Affiliations
- 1 Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands.
- 2 Department of Physics, University of Warwick, Coventry, United Kingdom.
- 3 Physik-Institut, Universität Zürich, Zürich, Switzerland.
- 4 Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom.
- 5 Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain.
- 6 H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom.
- 7 Université Clermont Auvergne, CNRS/IN2P3, LPC, Clermont-Ferrand, France.
- 8 LPNHE, Sorbonne Université, Paris Diderot Sorbonne Paris Cité, CNRS/IN2P3, Paris, France.
- 9 University of Michigan, Ann Arbor, Michigan, USA (associated with Syracuse University, Syracuse, New York, USA).
- 10 INFN Sezione di Milano, Milano, Italy.
- 11 University of Cincinnati, Cincinnati, Ohio, USA.
- 12 Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany.
- 13 European Organization for Nuclear Research (CERN), Geneva, Switzerland.
- 14 School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom.
- 15 ICCUB, Universitat de Barcelona, Barcelona, Spain.
- 16 Department of Physics and Astronomy, University of Manchester, Manchester, United Kingdom.
- 17 Petersburg Nuclear Physics Institute NRC Kurchatov Institute (PNPI NRC KI), Gatchina, Russia.
- 18 Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom.
- 19 Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil.
- 20 Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France.
- 21 INFN Sezione di Firenze, Firenze, Italy.
- 22 INFN Sezione di Ferrara, Ferrara, Italy.
- 23 Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany.
- 24 Institute for High Energy Physics NRC Kurchatov Institute (IHEP NRC KI), Protvino, Russia, Protvino, Russia.
- 25 Syracuse University, Syracuse, New York, USA.
- 26 Yandex School of Data Analysis, Moscow, Russia.
- 27 Aix Marseille Univ, CNRS/IN2P3, CPPM, Marseille, France.
- 28 Laboratoire Leprince-Ringuet, CNRS/IN2P3, Ecole Polytechnique, Institut Polytechnique de Paris, Palaiseau, France.
- 29 Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.
- 30 Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil.
- 31 Imperial College London, London, United Kingdom.
- 32 National University of Science and Technology "MISIS", Moscow, Russia (associated with Institute of Theoretical and Experimental Physics NRC Kurchatov Institute (ITEP NRC KI), Moscow, Russia).
- 33 I. Physikalisches Institut, RWTH Aachen University, Aachen, Germany.
- 34 AGH-University of Science and Technology, Faculty of Physics and Applied Computer Science, Kraków, Poland.
- 35 INFN Sezione di Pisa, Pisa, Italy.
- 36 INFN Sezione di Cagliari, Monserrato, Italy.
- 37 Institute of Nuclear Physics, Moscow State University (SINP MSU), Moscow, Russia.
- 38 Institute of Theoretical and Experimental Physics NRC Kurchatov Institute (ITEP NRC KI), Moscow, Russia.
- 39 INFN Laboratori Nazionali di Frascati, Frascati, Italy.
- 40 Universita degli Studi di Padova, Universita e INFN, Padova, Padova, Italy.
- 41 Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland.
- 42 School of Physics and Technology, Wuhan University, Wuhan, China (associated with Center for High Energy Physics, Tsinghua University, Beijing, China).
- 43 University of Birmingham, Birmingham, United Kingdom.
- 44 Department of Physics, University of Oxford, Oxford, United Kingdom.
- 45 National Research University Higher School of Economics, Moscow, Russia (associated with Yandex School of Data Analysis, Moscow, Russia).
- 46 Budker Institute of Nuclear Physics (SB RAS), Novosibirsk, Russia.
- 47 University of Maryland, College Park, Maryland, USA.
- 48 Guangdong Provincial Key Laboratory of Nuclear Science, Guangdong-Hong Kong Joint Laboratory of Quantum Matter, Institute of Quantum Matter, South China Normal University, Guangzhou, China (associated with Center for High Energy Physics, Tsinghua University, Beijing, China).
- 49 Institute for Nuclear Research of the Russian Academy of Sciences (INR RAS), Moscow, Russia.
- 50 INFN Sezione di Milano-Bicocca, Milano, Italy.
- 51 DS4DS, La Salle, Universitat Ramon Llull, Barcelona, Spain (associated with ICCUB, Universitat de Barcelona, Barcelona, Spain).
- 52 University of Chinese Academy of Sciences, Beijing, China.
- 53 INFN Sezione di Bologna, Bologna, Italy.
- 54 INFN Sezione di Roma Tor Vergata, Roma, Italy.
- 55 INFN Sezione di Genova, Genova, Italy.
- 56 Institute Of High Energy Physics (IHEP), Beijing, China.
- 57 Univ. Savoie Mont Blanc, CNRS, IN2P3-LAPP, Annecy, France.
- 58 Center for High Energy Physics, Tsinghua University, Beijing, China.
- 59 School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom.
- 60 Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania.
- 61 INFN Sezione di Bari, Bari, Italy.
- 62 Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.
- 63 Los Alamos National Laboratory (LANL), Los Alamos, New Mexico,USA.
- 64 Physics and Micro Electronic College, Hunan University, Changsha City, China (associated with Institute of Particle Physics, Central China Normal University, Wuhan, Hubei, China).
- 65 Van Swinderen Institute, University of Groningen, Groningen, Netherlands (associated with Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands).
- 66 Universiteit Maastricht, Maastricht, Netherlands (associated with Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands).
- 67 Eotvos Lorand University, Budapest, Hungary (associated with European Organization for Nuclear Research (CERN), Geneva, Switzerland).
- 68 Institute for Nuclear Research of the National Academy of Sciences (KINR), Kyiv, Ukraine.
- 69 School of Physics, University College Dublin, Dublin, Ireland.
- 70 NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine.
- 71 INFN Sezione di Perugia, Perugia, Italy (associated with INFN Sezione di Ferrara, Ferrara, Italy).
- 72 STFC Rutherford Appleton Laboratory, Didcot, United Kingdom.
- 73 School of Physics and Astronomy, Monash University, Melbourne, Australia (associated with Department of Physics, University of Warwick, Coventry, United Kingdom).
- 74 Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden (associated with School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom).
- 75 School of Physics State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing, China.
- 76 National Center for Nuclear Research (NCBJ), Warsaw, Poland.
- 77 Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rio de Janeiro, Brazil (associated with Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil).
- 78 Institute of Particle Physics, Central China Normal University, Wuhan, Hubei, China.
- 79 Instituto de Fisica Corpuscular, Centro Mixto Universidad de Valencia-CSIC, Valencia, Spain.
- 80 Nikhef National Institute for Subatomic Physics and VU University Amsterdam, Amsterdam, Netherlands.
- 81 National Research Tomsk Polytechnic University, Tomsk, Russia (associated with Institute of Theoretical and Experimental Physics NRC Kurchatov Institute (ITEP NRC KI), Moscow, Russia).
- 82 National Research Centre Kurchatov Institute, Moscow, Russia (associated with Institute of Theoretical and Experimental Physics NRC Kurchatov Institute (ITEP NRC KI), Moscow, Russia).
- 83 INFN Sezione di Roma La Sapienza, Roma, Italy.
- 84 Universität Bonn-Helmholtz-Institut für Strahlen und Kernphysik, Bonn, Germany (associated with Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany).
- 85 Departamento de Fisica, Universidad Nacional de Colombia, Bogota, Colombia (associated with LPNHE, Sorbonne Université, Paris Diderot Sorbonne Paris Cité, CNRS/IN2P3, Paris, France).
- 86 Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany.
- 87 Institut für Physik, Universität Rostock, Rostock, Germany (associated with Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany).
- PMID: 35622021
- DOI: 10.1103/PhysRevLett.128.191802
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Tests of Lepton Universality Using B^{0}→K_{S}^{0}ℓ^{+}ℓ^{-} and B^{+}→K^{*+}ℓ^{+}ℓ^{-} Decays
R Aaij et al.
Phys Rev Lett.
.
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doi: 10.1103/PhysRevLett.128.191802.
Authors
R Aaij
1
, A S W Abdelmotteleb
2
, C Abellán Beteta
3
, F Abudinén
2
, T Ackernley
4
, B Adeva
5
, M Adinolfi
6
, H Afsharnia
7
, C Agapopoulou
8
, C A Aidala
9
, S Aiola
10
, Z Ajaltouni
7
, S Akar
11
, J Albrecht
12
, F Alessio
13
, M Alexander
14
, A Alfonso Albero
15
, Z Aliouche
16
, G Alkhazov
17
, P Alvarez Cartelle
18
, S Amato
19
, J L Amey
6
, Y Amhis
20
, L An
13
, L Anderlini
21
, N Andersson
3
, A Andreianov
17
, M Andreotti
22
, F Archilli
23
, A Artamonov
24
, M Artuso
25
, K Arzymatov
26
, E Aslanides
27
, M Atzeni
3
, B Audurier
28
, S Bachmann
23
, M Bachmayer
29
, J J Back
2
, P Baladron Rodriguez
5
, V Balagura
28
, W Baldini
22
, J Baptista Leite
30
, M Barbetti
21
, R J Barlow
16
, S Barsuk
20
, W Barter
31
, M Bartolini
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32
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33
, S Bashir
34
, G Bassi
35
, B Batsukh
25
, A Battig
12
, A Bay
29
, A Beck
2
, M Becker
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, F Bedeschi
35
, I Bediaga
30
, A Beiter
25
, V Belavin
26
, S Belin
36
, V Bellee
3
, K Belous
24
, I Belov
37
, I Belyaev
38
, G Bencivenni
39
, E Ben-Haim
8
, A Berezhnoy
37
, R Bernet
3
, D Berninghoff
23
, H C Bernstein
25
, C Bertella
16
, A Bertolin
40
, C Betancourt
3
, F Betti
13
, Ia Bezshyiko
3
, S Bhasin
6
, J Bhom
41
, L Bian
42
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12
, N V Biesuz
22
, S Bifani
43
, P Billoir
8
, A Biolchini
1
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31
, F C R Bishop
18
, A Bitadze
16
, A Bizzeti
21
, M Bjørn
44
, M P Blago
13
, T Blake
2
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29
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25
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14
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12
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4
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13
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13
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52
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31
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1
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12
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2
73
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13
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4
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13
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33
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19
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29
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16
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12
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78
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57
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23
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48
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78
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58
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52
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42
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1
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2
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45
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4
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1
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12
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34
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17
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1
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79
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13
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34
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2
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5
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1
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16
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2
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52
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20
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29
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36
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4
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4
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11
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19
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2
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9
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24
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6
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3
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2
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21
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13
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1
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13
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53
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38
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5
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7
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13
14
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6
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82
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25
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27
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5
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8
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13
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26
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24
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13
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5
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2
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38
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4
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86
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1
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5
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3
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40
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12
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75
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9
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24
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4
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3
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1
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17
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19
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11
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13
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32
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36
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42
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47
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16
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43
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34
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76
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34
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13
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16
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6
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44
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32
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13
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4
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31
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7
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57
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56
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22
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75
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30
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8
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32
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6
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29
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52
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29
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1
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13
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23
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32
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1
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45
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23
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81
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53
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1
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63
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25
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1
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2
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11
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87
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51
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4
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20
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23
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75
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58
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6
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78
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3
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58
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52
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2
73
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43
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8
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31
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62
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6
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16
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6
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2
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12
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44
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25
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18
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62
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59
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72
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76
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41
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23
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20
, S A Wotton
18
, H Wu
25
, K Wyllie
13
, Z Xiang
52
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78
, Y Xie
78
, A Xu
75
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52
, L Xu
58
, M Xu
78
, Q Xu
52
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7
, Z Xu
52
, D Yang
58
, S Yang
52
, Y Yang
52
, Z Yang
75
, Z Yang
47
, Y Yao
25
, L E Yeomans
4
, H Yin
78
, J Yu
64
, X Yuan
25
, O Yushchenko
24
, E Zaffaroni
29
, M Zavertyaev
86
, M Zdybal
41
, O Zenaiev
13
, M Zeng
58
, D Zhang
78
, L Zhang
58
, S Zhang
64
, S Zhang
75
, Y Zhang
75
, Y Zhang
44
, A Zharkova
32
, A Zhelezov
23
, Y Zheng
52
, T Zhou
75
, X Zhou
52
, Y Zhou
52
, V Zhovkovska
20
, X Zhu
58
, X Zhu
78
, Z Zhu
52
, V Zhukov
33
37
, J B Zonneveld
59
, Q Zou
56
, S Zucchelli
53
, D Zuliani
40
, G Zunica
16
; LHCb Collaboration
Affiliations
- 1 Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands.
- 2 Department of Physics, University of Warwick, Coventry, United Kingdom.
- 3 Physik-Institut, Universität Zürich, Zürich, Switzerland.
- 4 Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom.
- 5 Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain.
- 6 H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom.
- 7 Université Clermont Auvergne, CNRS/IN2P3, LPC, Clermont-Ferrand, France.
- 8 LPNHE, Sorbonne Université, Paris Diderot Sorbonne Paris Cité, CNRS/IN2P3, Paris, France.
- 9 University of Michigan, Ann Arbor, Michigan, USA (associated with Syracuse University, Syracuse, New York, USA).
- 10 INFN Sezione di Milano, Milano, Italy.
- 11 University of Cincinnati, Cincinnati, Ohio, USA.
- 12 Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany.
- 13 European Organization for Nuclear Research (CERN), Geneva, Switzerland.
- 14 School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom.
- 15 ICCUB, Universitat de Barcelona, Barcelona, Spain.
- 16 Department of Physics and Astronomy, University of Manchester, Manchester, United Kingdom.
- 17 Petersburg Nuclear Physics Institute NRC Kurchatov Institute (PNPI NRC KI), Gatchina, Russia.
- 18 Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom.
- 19 Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil.
- 20 Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France.
- 21 INFN Sezione di Firenze, Firenze, Italy.
- 22 INFN Sezione di Ferrara, Ferrara, Italy.
- 23 Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany.
- 24 Institute for High Energy Physics NRC Kurchatov Institute (IHEP NRC KI), Protvino, Russia, Protvino, Russia.
- 25 Syracuse University, Syracuse, New York, USA.
- 26 Yandex School of Data Analysis, Moscow, Russia.
- 27 Aix Marseille Univ, CNRS/IN2P3, CPPM, Marseille, France.
- 28 Laboratoire Leprince-Ringuet, CNRS/IN2P3, Ecole Polytechnique, Institut Polytechnique de Paris, Palaiseau, France.
- 29 Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.
- 30 Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil.
- 31 Imperial College London, London, United Kingdom.
- 32 National University of Science and Technology "MISIS", Moscow, Russia (associated with Institute of Theoretical and Experimental Physics NRC Kurchatov Institute (ITEP NRC KI), Moscow, Russia).
- 33 I. Physikalisches Institut, RWTH Aachen University, Aachen, Germany.
- 34 AGH-University of Science and Technology, Faculty of Physics and Applied Computer Science, Kraków, Poland.
- 35 INFN Sezione di Pisa, Pisa, Italy.
- 36 INFN Sezione di Cagliari, Monserrato, Italy.
- 37 Institute of Nuclear Physics, Moscow State University (SINP MSU), Moscow, Russia.
- 38 Institute of Theoretical and Experimental Physics NRC Kurchatov Institute (ITEP NRC KI), Moscow, Russia.
- 39 INFN Laboratori Nazionali di Frascati, Frascati, Italy.
- 40 Universita degli Studi di Padova, Universita e INFN, Padova, Padova, Italy.
- 41 Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland.
- 42 School of Physics and Technology, Wuhan University, Wuhan, China (associated with Center for High Energy Physics, Tsinghua University, Beijing, China).
- 43 University of Birmingham, Birmingham, United Kingdom.
- 44 Department of Physics, University of Oxford, Oxford, United Kingdom.
- 45 National Research University Higher School of Economics, Moscow, Russia (associated with Yandex School of Data Analysis, Moscow, Russia).
- 46 Budker Institute of Nuclear Physics (SB RAS), Novosibirsk, Russia.
- 47 University of Maryland, College Park, Maryland, USA.
- 48 Guangdong Provincial Key Laboratory of Nuclear Science, Guangdong-Hong Kong Joint Laboratory of Quantum Matter, Institute of Quantum Matter, South China Normal University, Guangzhou, China (associated with Center for High Energy Physics, Tsinghua University, Beijing, China).
- 49 Institute for Nuclear Research of the Russian Academy of Sciences (INR RAS), Moscow, Russia.
- 50 INFN Sezione di Milano-Bicocca, Milano, Italy.
- 51 DS4DS, La Salle, Universitat Ramon Llull, Barcelona, Spain (associated with ICCUB, Universitat de Barcelona, Barcelona, Spain).
- 52 University of Chinese Academy of Sciences, Beijing, China.
- 53 INFN Sezione di Bologna, Bologna, Italy.
- 54 INFN Sezione di Roma Tor Vergata, Roma, Italy.
- 55 INFN Sezione di Genova, Genova, Italy.
- 56 Institute Of High Energy Physics (IHEP), Beijing, China.
- 57 Univ. Savoie Mont Blanc, CNRS, IN2P3-LAPP, Annecy, France.
- 58 Center for High Energy Physics, Tsinghua University, Beijing, China.
- 59 School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom.
- 60 Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania.
- 61 INFN Sezione di Bari, Bari, Italy.
- 62 Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.
- 63 Los Alamos National Laboratory (LANL), Los Alamos, New Mexico,USA.
- 64 Physics and Micro Electronic College, Hunan University, Changsha City, China (associated with Institute of Particle Physics, Central China Normal University, Wuhan, Hubei, China).
- 65 Van Swinderen Institute, University of Groningen, Groningen, Netherlands (associated with Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands).
- 66 Universiteit Maastricht, Maastricht, Netherlands (associated with Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands).
- 67 Eotvos Lorand University, Budapest, Hungary (associated with European Organization for Nuclear Research (CERN), Geneva, Switzerland).
- 68 Institute for Nuclear Research of the National Academy of Sciences (KINR), Kyiv, Ukraine.
- 69 School of Physics, University College Dublin, Dublin, Ireland.
- 70 NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine.
- 71 INFN Sezione di Perugia, Perugia, Italy (associated with INFN Sezione di Ferrara, Ferrara, Italy).
- 72 STFC Rutherford Appleton Laboratory, Didcot, United Kingdom.
- 73 School of Physics and Astronomy, Monash University, Melbourne, Australia (associated with Department of Physics, University of Warwick, Coventry, United Kingdom).
- 74 Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden (associated with School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom).
- 75 School of Physics State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing, China.
- 76 National Center for Nuclear Research (NCBJ), Warsaw, Poland.
- 77 Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rio de Janeiro, Brazil (associated with Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil).
- 78 Institute of Particle Physics, Central China Normal University, Wuhan, Hubei, China.
- 79 Instituto de Fisica Corpuscular, Centro Mixto Universidad de Valencia-CSIC, Valencia, Spain.
- 80 Nikhef National Institute for Subatomic Physics and VU University Amsterdam, Amsterdam, Netherlands.
- 81 National Research Tomsk Polytechnic University, Tomsk, Russia (associated with Institute of Theoretical and Experimental Physics NRC Kurchatov Institute (ITEP NRC KI), Moscow, Russia).
- 82 National Research Centre Kurchatov Institute, Moscow, Russia (associated with Institute of Theoretical and Experimental Physics NRC Kurchatov Institute (ITEP NRC KI), Moscow, Russia).
- 83 INFN Sezione di Roma La Sapienza, Roma, Italy.
- 84 Universität Bonn-Helmholtz-Institut für Strahlen und Kernphysik, Bonn, Germany (associated with Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany).
- 85 Departamento de Fisica, Universidad Nacional de Colombia, Bogota, Colombia (associated with LPNHE, Sorbonne Université, Paris Diderot Sorbonne Paris Cité, CNRS/IN2P3, Paris, France).
- 86 Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany.
- 87 Institut für Physik, Universität Rostock, Rostock, Germany (associated with Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany).
- PMID: 35622021
- DOI: 10.1103/PhysRevLett.128.191802
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Abstract
Tests of lepton universality in B^{0}→K_{S}^{0}ℓ^{+}ℓ^{-} and B^{+}→K^{*+}ℓ^{+}ℓ^{-} decays where ℓ is either an electron or a muon are presented. The differential branching fractions of B^{0}→K_{S}^{0}e^{+}e^{-} and B^{+}→K^{*+}e^{+}e^{-} decays are measured in intervals of the dilepton invariant mass squared. The measurements are performed using proton-proton collision data recorded by the LHCb experiment, corresponding to an integrated luminosity of 9 fb^{-1} . The results are consistent with the standard model and previous tests of lepton universality in related decay modes. The first observation of B^{0}→K_{S}^{0}e^{+}e^{-} and B^{+}→K^{*+}e^{+}e^{-} decays is reported.