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

被引：0

作者：

Hobart, A. ^{[1
]}

Niccolai, S. ^{[1
]}

Cuic, M. ^{[2
]}

Kumericki, K. ^{[2
]}

Achenbach, P. ^{[3
]}

Alvarado, J. S. ^{[1
]}

Armstrong, W. R. ^{[4
]}

Atac, H. ^{[5
]}

Avakian, H. ^{[3
]}

Baashen, L. ^{[6
,50
]}

Baltzell, N. A. ^{[3
]}

Barion, L. ^{[7
]}

Bashkanov, M. ^{[8
]}

Battaglieri, M. ^{[3
,9
,51
]}

Benkel, B. ^{[10
]}

Benmokhtar, F. ^{[11
]}

Bianconi, A. ^{[12
,13
]}

Biselli, A. S. ^{[14
]}

Boiarinov, S. ^{[3
]}

Bondi, M. ^{[15
]}

Booth, W. A. ^{[8
]}

Bossu, F. ^{[16
]}

Brinkmann, K. -Th. ^{[17
]}

Briscoe, W. J. ^{[18
]}

Brooks, W. K. ^{[19
]}

Bueltmann, S. ^{[20
]}

Burkert, V. D. ^{[3
]}

Cao, T. ^{[3
]}

Capobianco, R. ^{[21
]}

Carman, D. S. ^{[3
]}

Chatagnon, P. ^{[1
,3
]}

Ciullo, G. ^{[7
,22
]}

Cole, P. L. ^{[23
]}

Contalbrigo, M. ^{[7
]}

D'Angelo, A. ^{[10
,24
]}

Dashyan, N. ^{[25
]}

De Vita, R. ^{[9
,52
]}

Defurne, M. ^{[16
]}

Deur, A. ^{[3
]}

Diehl, S. ^{[17
,21
]}

Dilks, C. ^{[3
,26
]}

Djalali, C. ^{[27
]}

Dupre, R. ^{[1
]}

Egiyan, H. ^{[3
]}

El Alaoui, A. ^{[19
]}

El Fassi, L. ^{[28
]}

Elouadrhiri, L. ^{[3
]}

Fegan, S. ^{[8
]}

Filippi, A. ^{[29
]}

Fogler, C. ^{[20
]}

机构：

[1] Univ Paris Saclay, IJCLab, CNRS, IN2P3, F-91405 Orsay, France

[2] Univ Zagreb, Dept Phys, Fac Sci, Zagreb 10000, Croatia

[3] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA

[4] Argonne Natl Lab, Argonne, IL 60439 USA

[5] Temple Univ, Philadelphia, PA 19122 USA

[6] Florida Int Univ, Miami, FL 33199 USA

[7] INFN, Sez Ferrara, I-44100 Ferrara, Italy

[8] Univ York, York YO10 5DD, N Yorkshire, England

[9] INFN, Sez Genova, I-16146 Genoa, Italy

[10] INFN, Sez Roma Tor Vergata, I-00133 Rome, Italy

[11] Duquesne Univ, 600 Forbes Ave, Pittsburgh, PA 15282 USA

[12] Univ Brescia, I-25123 Brescia, Italy

[13] INFN, Sez Pavia, I-27100 Pavia, Italy

[14] Fairfield Univ, Fairfield, CT 06824 USA

[15] INFN, Sez Catania, I-95123 Catania, Italy

[16] Univ Paris Saclay, IRFU, CEA, F-91191 Gif Sur Yvette, France

[17] Univ Giessen, Phys Inst 2, D-35392 Giessen, Germany

[18] George Washington Univ, Washington, DC 20052 USA

[19] Univ Tecn Federico Santa Maria, Casilla 110-V, Valparaiso, Chile

[20] Old Dominion Univ, Norfolk, VA 23529 USA

[21] Univ Connecticut, Storrs, CT 06269 USA

[22] Univ Ferrara, I-44121 Ferrara, Italy

[23] Lamar Univ, 4400 MLK Blvd,POB 10046, Beaumont, TX 77710 USA

[24] Univ Roma Tor Vergata, I-00133 Rome, Italy

[25] Yerevan Phys Inst, Yerevan 375036, Armenia

[26] Duke Univ, Durham, NC 27708 USA

[27] Ohio Univ, Athens, OH 45701 USA

[28] Mississippi State Univ, Mississippi State, MS 39762 USA

[29] INFN, Sez Torino, I-10125 Turin, Italy

[30] Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland

[31] Univ New Hampshire, Durham, NH 03824 USA

[32] Univ Richmond, Richmond, VA 23173 USA

[33] Univ South Carolina, Columbia, SC 29208 USA

[34] Christopher Newport Univ, Newport News, VA 23606 USA

[35] Lomonosov Moscow State Univ, Inst Nucl Phys, Moscow 119234, Russia

[36] Kyungpook Natl Univ, Daegu 41566, South Korea

[37] Rensselaer Polytech Inst, Troy, NY 12180 USA

[38] MIT, Cambridge, MA 02139 USA

[39] Univ Insubria, I-22100 Como, Italy

[40] INFN, Lab Nazl Frascati, I-00044 Frascati, Italy

[41] James Madison Univ, Harrisonburg, VA 22807 USA

[42] New Mexico State Univ, POB 30001, Las Cruces, NM 88003 USA

[43] Univ Calif Riverside, 900 Univ Ave, Riverside, CA 92521 USA

[44] Calif State Univ, Carson, CA 90747 USA

[45] GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany

[46] Ruhr Univ Bochum, D-44801 Bochum, Germany

[47] Norfolk State Univ, Norfolk, VA 23504 USA

[48] Canisius Coll, Buffalo, NY 14208 USA

[49] Univ Virginia, Charlottesville, VA 22901 USA

[50] King Saud Univ Riyadh, Riyadh, Saudi Arabia

来源：

PHYSICAL REVIEW LETTERS | 2024年 / 133卷 / 21期

基金：

英国科学技术设施理事会; 美国国家科学基金会; 新加坡国家研究基金会; 欧盟地平线“2020”;

关键词：

D O I：

10.1103/PhysRevLett.133.211903

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

引用

页数：7

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