doi: 10.1103/PhysRevLett.116.191601.
Epub 2016 May 9.
Measurement of the Difference of Time-Integrated CP Asymmetries in D^{0}→K^{-}K^{+} and D^{0}→π^{-}π^{+} Decays
R Aaij
1
, C Abellán Beteta
2
, B Adeva
3
, M Adinolfi
4
, A Affolder
5
, Z Ajaltouni
6
, S Akar
7
, J Albrecht
8
, F Alessio
1
, M Alexander
9
, S Ali
10
, G Alkhazov
11
, P Alvarez Cartelle
12
, A A Alves
13
, S Amato
14
, S Amerio
15
, Y Amhis
16
, L An
17
18
, L Anderlini
19
, G Andreassi
18
, M Andreotti
20
, J E Andrews
21
, R B Appleby
22
, O Aquines Gutierrez
23
, F Archilli
1
, P d'Argent
24
, A Artamonov
25
, M Artuso
26
, E Aslanides
7
, G Auriemma
27
, M Baalouch
6
, S Bachmann
24
, J J Back
28
, A Badalov
29
, C Baesso
30
, W Baldini
20
1
, R J Barlow
22
, C Barschel
1
, S Barsuk
16
, W Barter
1
, V Batozskaya
31
, V Battista
18
, A Bay
18
, L Beaucourt
32
, J Beddow
9
, F Bedeschi
33
, I Bediaga
34
, L J Bel
10
, V Bellee
18
, N Belloli
35
, I Belyaev
36
, E Ben-Haim
37
, G Bencivenni
38
, S Benson
1
, J Benton
4
, A Berezhnoy
39
, R Bernet
2
, A Bertolin
15
, F Betti
40
, M-O Bettler
1
, M van Beuzekom
10
, S Bifani
41
, P Billoir
37
, T Bird
22
, A Birnkraut
8
, A Bizzeti
19
, T Blake
28
, F Blanc
18
, J Blouw
23
, S Blusk
26
, V Bocci
27
, A Bondar
42
, N Bondar
11
1
, W Bonivento
43
, A Borgheresi
35
, S Borghi
22
, M Borisyak
44
, M Borsato
3
, T J V Bowcock
5
, E Bowen
2
, C Bozzi
20
1
, S Braun
24
, M Britsch
24
, T Britton
26
, J Brodzicka
22
, N H Brook
4
, E Buchanan
4
, C Burr
22
, A Bursche
2
, J Buytaert
1
, S Cadeddu
43
, R Calabrese
20
, M Calvi
35
, M Calvo Gomez
29
, P Campana
38
, D Campora Perez
1
, L Capriotti
22
, A Carbone
40
, G Carboni
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, R Cardinale
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, A Cardini
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, P Carniti
35
, L Carson
47
, K Carvalho Akiba
14
, G Casse
5
, L Cassina
35
, L Castillo Garcia
18
, M Cattaneo
1
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8
, G Cavallero
46
, R Cenci
33
, M Charles
37
, Ph Charpentier
1
, M Chefdeville
32
, S Chen
22
, S-F Cheung
48
, N Chiapolini
2
, M Chrzaszcz
49
2
, X Cid Vidal
1
, G Ciezarek
10
, P E L Clarke
47
, M Clemencic
1
, H V Cliff
50
, J Closier
1
, V Coco
1
, J Cogan
7
, E Cogneras
6
, V Cogoni
43
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51
, G Collazuol
15
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1
, A Comerma-Montells
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1
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4
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4
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1
, M Corvo
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, S Cunliffe
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, R Currie
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, C D'Ambrosio
1
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, J Dalseno
4
, P N Y David
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, A Davis
13
, O De Aguiar Francisco
14
, K De Bruyn
7
, S De Capua
22
, M De Cian
24
, J M De Miranda
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, L De Paula
14
, P De Simone
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9
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, M Deckenhoff
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, M Demmer
8
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6
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1
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3
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1
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1
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; LHCb Collaboration
Affiliations
Affiliations
- 1 European Organization for Nuclear Research (CERN), Geneva, Switzerland.
- 2 Physik-Institut, Universität Zürich, Zürich, Switzerland.
- 3 Universidad de Santiago de Compostela, Santiago de Compostela, Spain.
- 4 H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom.
- 5 Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom.
- 6 Clermont Université, Université Blaise Pascal, CNRS/IN2P3, LPC, Clermont-Ferrand, France.
- 7 CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France.
- 8 Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany.
- 9 School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom.
- 10 Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands.
- 11 Petersburg Nuclear Physics Institute (PNPI), Gatchina, Russia.
- 12 Imperial College London, London, United Kingdom.
- 13 University of Cincinnati, Cincinnati, OH, United States.
- 14 Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil.
- 15 Sezione INFN di Padova, Padova, Italy.
- 16 LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France.
- 17 Center for High Energy Physics, Tsinghua University, Beijing, China.
- 18 Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.
- 19 Sezione INFN di Firenze, Firenze, Italy.
- 20 Sezione INFN di Ferrara, Ferrara, Italy.
- 21 University of Maryland, College Park, MD, United States.
- 22 School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom.
- 23 Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany.
- 24 Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany.
- 25 Institute for High Energy Physics (IHEP), Protvino, Russia.
- 26 Syracuse University, Syracuse, NY, United States.
- 27 Sezione INFN di Roma La Sapienza, Roma, Italy.
- 28 Department of Physics, University of Warwick, Coventry, United Kingdom.
- 29 Universitat de Barcelona, Barcelona, Spain.
- 30 Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rio de Janeiro, Brazil (associated with Institution Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil).
- 31 National Center for Nuclear Research (NCBJ), Warsaw, Poland.
- 32 LAPP, Université Savoie Mont-Blanc, CNRS/IN2P3, Annecy-Le-Vieux, France.
- 33 Sezione INFN di Pisa, Pisa, Italy.
- 34 Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil.
- 35 Sezione INFN di Milano Bicocca, Milano, Italy.
- 36 Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia.
- 37 LPNHE, Université Pierre et Marie Curie, Université Paris Diderot, CNRS/IN2P3, Paris, France.
- 38 Laboratori Nazionali dell'INFN di Frascati, Frascati, Italy.
- 39 Institute of Nuclear Physics, Moscow State University (SINP MSU), Moscow, Russia.
- 40 Sezione INFN di Bologna, Bologna, Italy.
- 41 University of Birmingham, Birmingham, United Kingdom.
- 42 Budker Institute of Nuclear Physics (SB RAS) and Novosibirsk State University, Novosibirsk, Russia.
- 43 Sezione INFN di Cagliari, Cagliari, Italy.
- 44 Yandex School of Data Analysis, Moscow, Russia (associated with Institution Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia).
- 45 Sezione INFN di Roma Tor Vergata, Roma, Italy.
- 46 Sezione INFN di Genova, Genova, Italy.
- 47 School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom.
- 48 Department of Physics, University of Oxford, Oxford, United Kingdom.
- 49 Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland.
- 50 Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom.
- 51 Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania.
- 52 Sezione INFN di Milano, Milano, Italy.
- 53 NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine.
- 54 STFC Rutherford Appleton Laboratory, Didcot, United Kingdom.
- 55 Institute for Nuclear Research of the Russian Academy of Sciences (INR RAN), Moscow, Russia.
- 56 AGH-University of Science and Technology, Faculty of Physics and Applied Computer Science, Kraków, Poland.
- 57 Institut für Physik, Universität Rostock, Rostock, Germany (associated with Institution Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany).
- 58 I. Physikalisches Institut, RWTH Aachen University, Aachen, Germany.
- 59 Massachusetts Institute of Technology, Cambridge, MA, United States.
- 60 Nikhef National Institute for Subatomic Physics and VU University Amsterdam, Amsterdam, The Netherlands.
- 61 National Research Centre Kurchatov Institute, Moscow, Russia (associated with Institution Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia).
- 62 Instituto de Fisica Corpuscular (IFIC), Universitat de Valencia-CSIC, Valencia, Spain (associated with Institution Universitat de Barcelona, Barcelona, Spain).
- 63 School of Physics, University College Dublin, Dublin, Ireland.
- 64 Departamento de Fisica, Universidad Nacional de Colombia, Bogota, Colombia (associated with Institution LPNHE, Université Pierre et Marie Curie, Université Paris Diderot, CNRS/IN2P3, Paris, France).
- 65 Institute for Nuclear Research of the National Academy of Sciences (KINR), Kyiv, Ukraine.
- 66 Van Swinderen Institute, University of Groningen, Groningen, The Netherlands (associated with Institution Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands).
- 67 Sezione INFN di Bari, Bari, Italy.
- 68 Institute of Particle Physics, Central China Normal University, Wuhan, Hubei, China (associated with Institution Center for High Energy Physics, Tsinghua University, Beijing, China).
- PMID: 27232015
- DOI: 10.1103/PhysRevLett.116.191601
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Measurement of the Difference of Time-Integrated CP Asymmetries in D^{0}→K^{-}K^{+} and D^{0}→π^{-}π^{+} Decays
R Aaij et al.
Phys Rev Lett.
.
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doi: 10.1103/PhysRevLett.116.191601.
Epub 2016 May 9.
Authors
R Aaij
1
, C Abellán Beteta
2
, B Adeva
3
, M Adinolfi
4
, A Affolder
5
, Z Ajaltouni
6
, S Akar
7
, J Albrecht
8
, F Alessio
1
, M Alexander
9
, S Ali
10
, G Alkhazov
11
, P Alvarez Cartelle
12
, A A Alves
13
, S Amato
14
, S Amerio
15
, Y Amhis
16
, L An
17
18
, L Anderlini
19
, G Andreassi
18
, M Andreotti
20
, J E Andrews
21
, R B Appleby
22
, O Aquines Gutierrez
23
, F Archilli
1
, P d'Argent
24
, A Artamonov
25
, M Artuso
26
, E Aslanides
7
, G Auriemma
27
, M Baalouch
6
, S Bachmann
24
, J J Back
28
, A Badalov
29
, C Baesso
30
, W Baldini
20
1
, R J Barlow
22
, C Barschel
1
, S Barsuk
16
, W Barter
1
, V Batozskaya
31
, V Battista
18
, A Bay
18
, L Beaucourt
32
, J Beddow
9
, F Bedeschi
33
, I Bediaga
34
, L J Bel
10
, V Bellee
18
, N Belloli
35
, I Belyaev
36
, E Ben-Haim
37
, G Bencivenni
38
, S Benson
1
, J Benton
4
, A Berezhnoy
39
, R Bernet
2
, A Bertolin
15
, F Betti
40
, M-O Bettler
1
, M van Beuzekom
10
, S Bifani
41
, P Billoir
37
, T Bird
22
, A Birnkraut
8
, A Bizzeti
19
, T Blake
28
, F Blanc
18
, J Blouw
23
, S Blusk
26
, V Bocci
27
, A Bondar
42
, N Bondar
11
1
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43
, A Borgheresi
35
, S Borghi
22
, M Borisyak
44
, M Borsato
3
, T J V Bowcock
5
, E Bowen
2
, C Bozzi
20
1
, S Braun
24
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24
, T Britton
26
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22
, N H Brook
4
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4
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22
, A Bursche
2
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1
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43
, R Calabrese
20
, M Calvi
35
, M Calvo Gomez
29
, P Campana
38
, D Campora Perez
1
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22
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40
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45
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46
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35
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47
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14
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49
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24
, A Zhokhov
36
, L Zhong
17
, V Zhukov
58
, S Zucchelli
40
; LHCb Collaboration
Affiliations
- 1 European Organization for Nuclear Research (CERN), Geneva, Switzerland.
- 2 Physik-Institut, Universität Zürich, Zürich, Switzerland.
- 3 Universidad de Santiago de Compostela, Santiago de Compostela, Spain.
- 4 H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom.
- 5 Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom.
- 6 Clermont Université, Université Blaise Pascal, CNRS/IN2P3, LPC, Clermont-Ferrand, France.
- 7 CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France.
- 8 Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany.
- 9 School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom.
- 10 Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands.
- 11 Petersburg Nuclear Physics Institute (PNPI), Gatchina, Russia.
- 12 Imperial College London, London, United Kingdom.
- 13 University of Cincinnati, Cincinnati, OH, United States.
- 14 Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil.
- 15 Sezione INFN di Padova, Padova, Italy.
- 16 LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France.
- 17 Center for High Energy Physics, Tsinghua University, Beijing, China.
- 18 Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.
- 19 Sezione INFN di Firenze, Firenze, Italy.
- 20 Sezione INFN di Ferrara, Ferrara, Italy.
- 21 University of Maryland, College Park, MD, United States.
- 22 School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom.
- 23 Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany.
- 24 Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany.
- 25 Institute for High Energy Physics (IHEP), Protvino, Russia.
- 26 Syracuse University, Syracuse, NY, United States.
- 27 Sezione INFN di Roma La Sapienza, Roma, Italy.
- 28 Department of Physics, University of Warwick, Coventry, United Kingdom.
- 29 Universitat de Barcelona, Barcelona, Spain.
- 30 Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rio de Janeiro, Brazil (associated with Institution Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil).
- 31 National Center for Nuclear Research (NCBJ), Warsaw, Poland.
- 32 LAPP, Université Savoie Mont-Blanc, CNRS/IN2P3, Annecy-Le-Vieux, France.
- 33 Sezione INFN di Pisa, Pisa, Italy.
- 34 Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil.
- 35 Sezione INFN di Milano Bicocca, Milano, Italy.
- 36 Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia.
- 37 LPNHE, Université Pierre et Marie Curie, Université Paris Diderot, CNRS/IN2P3, Paris, France.
- 38 Laboratori Nazionali dell'INFN di Frascati, Frascati, Italy.
- 39 Institute of Nuclear Physics, Moscow State University (SINP MSU), Moscow, Russia.
- 40 Sezione INFN di Bologna, Bologna, Italy.
- 41 University of Birmingham, Birmingham, United Kingdom.
- 42 Budker Institute of Nuclear Physics (SB RAS) and Novosibirsk State University, Novosibirsk, Russia.
- 43 Sezione INFN di Cagliari, Cagliari, Italy.
- 44 Yandex School of Data Analysis, Moscow, Russia (associated with Institution Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia).
- 45 Sezione INFN di Roma Tor Vergata, Roma, Italy.
- 46 Sezione INFN di Genova, Genova, Italy.
- 47 School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom.
- 48 Department of Physics, University of Oxford, Oxford, United Kingdom.
- 49 Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland.
- 50 Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom.
- 51 Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania.
- 52 Sezione INFN di Milano, Milano, Italy.
- 53 NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine.
- 54 STFC Rutherford Appleton Laboratory, Didcot, United Kingdom.
- 55 Institute for Nuclear Research of the Russian Academy of Sciences (INR RAN), Moscow, Russia.
- 56 AGH-University of Science and Technology, Faculty of Physics and Applied Computer Science, Kraków, Poland.
- 57 Institut für Physik, Universität Rostock, Rostock, Germany (associated with Institution Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany).
- 58 I. Physikalisches Institut, RWTH Aachen University, Aachen, Germany.
- 59 Massachusetts Institute of Technology, Cambridge, MA, United States.
- 60 Nikhef National Institute for Subatomic Physics and VU University Amsterdam, Amsterdam, The Netherlands.
- 61 National Research Centre Kurchatov Institute, Moscow, Russia (associated with Institution Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia).
- 62 Instituto de Fisica Corpuscular (IFIC), Universitat de Valencia-CSIC, Valencia, Spain (associated with Institution Universitat de Barcelona, Barcelona, Spain).
- 63 School of Physics, University College Dublin, Dublin, Ireland.
- 64 Departamento de Fisica, Universidad Nacional de Colombia, Bogota, Colombia (associated with Institution LPNHE, Université Pierre et Marie Curie, Université Paris Diderot, CNRS/IN2P3, Paris, France).
- 65 Institute for Nuclear Research of the National Academy of Sciences (KINR), Kyiv, Ukraine.
- 66 Van Swinderen Institute, University of Groningen, Groningen, The Netherlands (associated with Institution Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands).
- 67 Sezione INFN di Bari, Bari, Italy.
- 68 Institute of Particle Physics, Central China Normal University, Wuhan, Hubei, China (associated with Institution Center for High Energy Physics, Tsinghua University, Beijing, China).
- PMID: 27232015
- DOI: 10.1103/PhysRevLett.116.191601
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Abstract
A search for CP violation in D^{0}→K^{-}K^{+} and D^{0}→π^{-}π^{+} decays is performed using pp collision data, corresponding to an integrated luminosity of 3 fb^{-1}, collected using the LHCb detector at center-of-mass energies of 7 and 8 TeV. The flavor of the charm meson is inferred from the charge of the pion in D^{*+}→D^{0}π^{+} and D^{*-}→D[over ¯]^{0}π^{-} decays. The difference between the CP asymmetries in D^{0}→K^{-}K^{+} and D^{0}→π^{-}π^{+} decays, ΔA_{CP}≡A_{CP}(K^{-}K^{+})-A_{CP}(π^{-}π^{+}), is measured to be [-0.10±0.08(stat)±0.03(syst)]%. This is the most precise measurement of a time-integrated CP asymmetry in the charm sector from a single experiment.
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