First Measurement of Deeply Virtual Compton Scattering on the Neutron with Detection of the Active Neutron

A Hobart¹, S Niccolai¹, M Čuić², K Kumerički², P Achenbach³, J S Alvarado¹, W R Armstrong⁴, H Atac⁵, H Avakian³, L Baashen⁶, N A Baltzell³, L Barion⁷, M Bashkanov⁸, M Battaglieri^{3

9}, B Benkel¹⁰, F Benmokhtar¹¹, A Bianconi^{12

13}, A S Biselli¹⁴, S Boiarinov³, M Bondi¹⁵, W A Booth⁸, F Bossù¹⁶, K-Th Brinkmann¹⁷, W J Briscoe¹⁸, W K Brooks¹⁹, S Bueltmann²⁰, V D Burkert³, T Cao³, R Capobianco²¹, D S Carman³, P Chatagnon^{1

3}, G Ciullo^{7

22}, P L Cole²³, M Contalbrigo⁷, A D'Angelo^{10

24}, N Dashyan²⁵, R De Vita⁹, M Defurne¹⁶, A Deur³, S Diehl^{17

21}, C Dilks^{3

26}, C Djalali²⁷, R Dupre¹, H Egiyan³, A El Alaoui¹⁹, L El Fassi²⁸, L Elouadrhiri³, S Fegan⁸, A Filippi²⁹, C Fogler²⁰, K Gates³⁰, G Gavalian^{3

31}, G P Gilfoyle³², D Glazier³⁰, R W Gothe³³, Y Gotra³, M Guidal¹, K Hafidi⁴, H Hakobyan¹⁹, M Hattawy²⁰, F Hauenstein^{3

20}, D Heddle^{3

34}, M Holtrop³¹, Y Ilieva^{18

33}, D G Ireland³⁰, E L Isupov³⁵, H Jiang³⁰, H S Jo³⁶, K Joo²¹, T Kageya³, A Kim²¹, W Kim³⁶, V Klimenko²¹, A Kripko¹⁷, V Kubarovsky^{3

37}, S E Kuhn²⁰, L Lanza^{10

24}, M Leali^{12

13}, S Lee^{4

38}, P Lenisa^{7

22}, X Li³⁸, I J D MacGregor³⁰, D Marchand¹, V Mascagna^{12

13

39}, M Maynes²⁸, B McKinnon³⁰, Z E Meziani⁴, S Migliorati^{12

13}, R G Milner³⁸, T Mineeva¹⁹, M Mirazita⁴⁰, V Mokeev^{3

35}, C Muñoz Camacho¹, P Nadel-Turonski³, P Naidoo³⁰, K Neupane³³, G Niculescu⁴¹, M Osipenko⁹, P Pandey³⁸, M Paolone^{5

42}, L L Pappalardo^{7

22}, R Paremuzyan^{3

31}, E Pasyuk³, S J Paul⁴³, W Phelps^{3

34}, N Pilleux¹, M Pokhrel²⁰, S Polcher Rafael¹⁶, J Poudel³, J W Price⁴⁴, Y Prok²⁰, T Reed⁶, J Richards²¹, M Ripani⁹, J Ritman^{45

46}, P Rossi^{3

40}, A A Golubenko³⁵, C Salgado⁴⁷, S Schadmand⁴⁵, A Schmidt¹⁸, Marshall B C Scott¹⁸, E M Seroka¹⁸, Y G Sharabian³, E V Shirokov³⁵, U Shrestha^{21

27}, N Sparveris⁵, M Spreafico⁹, S Stepanyan³, I I Strakovsky¹⁸, S Strauch^{18

33}, J A Tan³⁶, N Trotta²¹, R Tyson³, M Ungaro³, S Vallarino⁹, L Venturelli^{12

13}, V Tommaso⁹, H Voskanyan²⁵, E Voutier¹, D P Watts⁸, X Wei³, R Williams⁸, M H Wood^{33

48}, L Xu¹, N Zachariou⁸, J Zhang⁴⁹, Z W Zhao²⁶, M Zurek⁴; CLAS Collaboration

Affiliations

¹ <a href="https://ror.org/03xjwb503">Université Paris-Saclay</a>, CNRS/IN2P3, IJCLab, 91405 Orsay, France.
² Department of Physics, Faculty of Science, University of Zagreb, 10000 Zagreb, Croatia.
³ Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA.
⁴ Argonne National Laboratory, Argonne, Illinois 60439, USA.
⁵ Temple University, Philadelphia, Pennsylvania 19122, USA.
⁶ Florida International University, Miami, Florida 33199, USA.
⁷ INFN, Sezione di Ferrara, 44100 Ferrara, Italy.
⁸ University of York, York YO10 5DD, United Kingdom.
⁹ INFN, Sezione di Genova, 16146 Genova, Italy.
¹⁰ INFN, Sezione di Roma Tor Vergata, 00133 Rome, Italy.
¹¹ Duquesne University, 600 Forbes Avenue, Pittsburgh, Pennsylvania 15282, USA.
¹² Universit'a degli Studi di Brescia, 25123 Brescia, Italy.
¹³ INFN, Sezione di Pavia, 27100 Pavia, Italy.
¹⁴ Fairfield University, Fairfield, Connecticut 06824, USA.
¹⁵ INFN - Sezione di Catania, 95123 Catania, Italy.
¹⁶ IRFU, CEA, <a href="https://ror.org/03xjwb503">Université Paris-Saclay</a>, F-91191 Gif-sur-Yvette, France.
¹⁷ II Physikalisches Institut der Universitaet Giessen, 35392 Giessen, Germany.
¹⁸ The George Washington University, Washington, DC 20052, USA.
¹⁹ Universidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile.
²⁰ Old Dominion University, Norfolk, Virginia 23529, USA.
²¹ University of Connecticut, Storrs, Connecticut 06269, USA.
²² Universita' di Ferrara, 44121 Ferrara, Italy.
²³ Lamar University, 4400 MLK Blvd, PO Box 10046, Beaumont, Texas 77710, USA.
²⁴ Universita' di Roma Tor Vergata, 00133 Rome, Italy.
²⁵ Yerevan Physics Institute, 375036 Yerevan, Armenia.
²⁶ Duke University, Durham, North Carolina 27708-0305, USA.
²⁷ Ohio University, Athens, Ohio 45701, USA.
²⁸ Mississippi State University, Mississippi State, Mississippi 39762-5167, USA.
²⁹ INFN, Sezione di Torino, 10125 Torino, Italy.
³⁰ University of Glasgow, Glasgow G12 8QQ, United Kingdom.
³¹ University of New Hampshire, Durham, New Hampshire 03824-3568, USA.
³² University of Richmond, Richmond, Virginia 23173, USA.
³³ University of South Carolina, Columbia, South Carolina 29208, USA.
³⁴ Christopher Newport University, Newport News, Virginia 23606, USA.
³⁵ Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119234 Moscow, Russia.
³⁶ Kyungpook National University, Daegu 41566, Republic of Korea.
³⁷ Rensselaer Polytechnic Institute, Troy, New York 12180-3590, USA.
³⁸ Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, USA.
³⁹ Università degli Studi dell'Insubria, 22100 Como, Italy.
⁴⁰ INFN, Laboratori Nazionali di Frascati, 00044 Frascati, Italy.
⁴¹ James Madison University, Harrisonburg, Virginia 22807, USA.
⁴² New Mexico State University, PO Box 30001, Las Cruces, New Mexico 88003, USA.
⁴³ University of California Riverside, 900 University Avenue, Riverside, California 92521, USA.
⁴⁴ California State University, Dominguez Hills, Carson, California 90747, USA.
⁴⁵ GSI Helmholtzzentrum fur Schwerionenforschung GmbH, D-64291 Darmstadt, Germany.
⁴⁶ Ruhr-Universität-Bochum, Institut für Experimentalphysik I, 44801 Bochum, Germany.
⁴⁷ Norfolk State University, Norfolk, Virginia 23504, USA.
⁴⁸ Canisius College, Buffalo, New York 14208, USA.
⁴⁹ University of Virginia, Charlottesville, Virginia 22901, USA.

PMID: 39642503
DOI: 10.1103/PhysRevLett.133.211903

First Measurement of Deeply Virtual Compton Scattering on the Neutron with Detection of the Active Neutron

A Hobart et al. Phys Rev Lett. 2024.

. 2024 Nov 22;133(21):211903.

doi: 10.1103/PhysRevLett.133.211903.

Authors

Affiliations

¹ <a href="https://ror.org/03xjwb503">Université Paris-Saclay</a>, CNRS/IN2P3, IJCLab, 91405 Orsay, France.
² Department of Physics, Faculty of Science, University of Zagreb, 10000 Zagreb, Croatia.
³ Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA.
⁴ Argonne National Laboratory, Argonne, Illinois 60439, USA.
⁵ Temple University, Philadelphia, Pennsylvania 19122, USA.
⁶ Florida International University, Miami, Florida 33199, USA.
⁷ INFN, Sezione di Ferrara, 44100 Ferrara, Italy.
⁸ University of York, York YO10 5DD, United Kingdom.
⁹ INFN, Sezione di Genova, 16146 Genova, Italy.
¹⁰ INFN, Sezione di Roma Tor Vergata, 00133 Rome, Italy.
¹¹ Duquesne University, 600 Forbes Avenue, Pittsburgh, Pennsylvania 15282, USA.
¹² Universit'a degli Studi di Brescia, 25123 Brescia, Italy.
¹³ INFN, Sezione di Pavia, 27100 Pavia, Italy.
¹⁴ Fairfield University, Fairfield, Connecticut 06824, USA.
¹⁵ INFN - Sezione di Catania, 95123 Catania, Italy.
¹⁶ IRFU, CEA, <a href="https://ror.org/03xjwb503">Université Paris-Saclay</a>, F-91191 Gif-sur-Yvette, France.
¹⁷ II Physikalisches Institut der Universitaet Giessen, 35392 Giessen, Germany.
¹⁸ The George Washington University, Washington, DC 20052, USA.
¹⁹ Universidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile.
²⁰ Old Dominion University, Norfolk, Virginia 23529, USA.
²¹ University of Connecticut, Storrs, Connecticut 06269, USA.
²² Universita' di Ferrara, 44121 Ferrara, Italy.
²³ Lamar University, 4400 MLK Blvd, PO Box 10046, Beaumont, Texas 77710, USA.
²⁴ Universita' di Roma Tor Vergata, 00133 Rome, Italy.
²⁵ Yerevan Physics Institute, 375036 Yerevan, Armenia.
²⁶ Duke University, Durham, North Carolina 27708-0305, USA.
²⁷ Ohio University, Athens, Ohio 45701, USA.
²⁸ Mississippi State University, Mississippi State, Mississippi 39762-5167, USA.
²⁹ INFN, Sezione di Torino, 10125 Torino, Italy.
³⁰ University of Glasgow, Glasgow G12 8QQ, United Kingdom.
³¹ University of New Hampshire, Durham, New Hampshire 03824-3568, USA.
³² University of Richmond, Richmond, Virginia 23173, USA.
³³ University of South Carolina, Columbia, South Carolina 29208, USA.
³⁴ Christopher Newport University, Newport News, Virginia 23606, USA.
³⁵ Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119234 Moscow, Russia.
³⁶ Kyungpook National University, Daegu 41566, Republic of Korea.
³⁷ Rensselaer Polytechnic Institute, Troy, New York 12180-3590, USA.
³⁸ Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, USA.
³⁹ Università degli Studi dell'Insubria, 22100 Como, Italy.
⁴⁰ INFN, Laboratori Nazionali di Frascati, 00044 Frascati, Italy.
⁴¹ James Madison University, Harrisonburg, Virginia 22807, USA.
⁴² New Mexico State University, PO Box 30001, Las Cruces, New Mexico 88003, USA.
⁴³ University of California Riverside, 900 University Avenue, Riverside, California 92521, USA.
⁴⁴ California State University, Dominguez Hills, Carson, California 90747, USA.
⁴⁵ GSI Helmholtzzentrum fur Schwerionenforschung GmbH, D-64291 Darmstadt, Germany.
⁴⁶ Ruhr-Universität-Bochum, Institut für Experimentalphysik I, 44801 Bochum, Germany.
⁴⁷ Norfolk State University, Norfolk, Virginia 23504, USA.
⁴⁸ Canisius College, Buffalo, New York 14208, USA.
⁴⁹ University of Virginia, Charlottesville, Virginia 22901, USA.

PMID: 39642503
DOI: 10.1103/PhysRevLett.133.211903

Abstract

Measuring deeply virtual Compton scattering (DVCS) on the neutron is one of the necessary steps to understand the structure of the nucleon in terms of generalized parton distributions (GPDs). Neutron targets play a complementary role to transversely polarized proton targets in the determination of the GPD E. This poorly known and poorly constrained GPD is essential to obtain the contribution of the quarks' angular momentum to the spin of the nucleon. DVCS on the neutron was measured for the first time selecting the exclusive final state by detecting the neutron, using the Jefferson Lab longitudinally polarized electron beam, with energies up to 10.6 GeV, and the CLAS12 detector. The extracted beam-spin asymmetries, combined with DVCS observables measured on the proton, allow a clean quark-flavor separation of the imaginary parts of the Compton form factors H and E.

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First Measurement of Deeply Virtual Compton Scattering on the Neutron with Detection of the Active Neutron

Affiliations

First Measurement of Deeply Virtual Compton Scattering on the Neutron with Detection of the Active Neutron

Authors

Affiliations

Abstract

LinkOut - more resources

Full Text Sources

Miscellaneous