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

(CLAS Collaboration)

doi:10.1103/PhysRevLett.133.211903

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

(CLAS Collaboration)

Université Paris-Saclay
University of Zagreb
Thomas Jefferson National Accelerator Facility
Argonne National Laboratory
Temple University
Florida International University
King Saud University
National Institute for Nuclear Physics
University of York
Duquesne University
University of Brescia
Fairfield University
Justus Liebig University Giessen
George Washington University
Universidad Técnica Federico Santa Maria
Old Dominion University
University of Connecticut
University of Ferrara
Lamar University
University of Rome Tor Vergata
A. Alikhanian Yerevan Institute of Physics
Duke University
Ohio University
Mississippi State University

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

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.

Original language	English
Article number	211903
Journal	Physical Review Letters
Volume	133
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevLett.133.211903
State	Published - 22 Nov 2024

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10.1103/PhysRevLett.133.211903

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@article{53a25ebe97664c28a93483d27dcc81aa,

title = "First Measurement of Deeply Virtual Compton Scattering on the Neutron with Detection of the Active Neutron",

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.",

author = "\{(CLAS Collaboration)\} and A. Hobart and S. Niccolai and M. {\v C}ui{\'c} and K. Kumeri{\v c}ki and P. Achenbach and Alvarado, \{J. S.\} and Armstrong, \{W. R.\} and H. Atac and H. Avakian and L. Baashen and Baltzell, \{N. A.\} and L. Barion and M. Bashkanov and M. Battaglieri and B. Benkel and F. Benmokhtar and A. Bianconi and Biselli, \{A. S.\} and S. Boiarinov and M. Bondi and Booth, \{W. A.\} and F. Boss{\`u} and Brinkmann, \{K. Th\} and Briscoe, \{W. J.\} and Brooks, \{W. K.\} and S. Bueltmann and Burkert, \{V. D.\} and T. Cao and R. Capobianco and Carman, \{D. S.\} and P. Chatagnon and G. Ciullo and Cole, \{P. L.\} and M. Contalbrigo and A. D'Angelo and N. Dashyan and \{De Vita\}, R. and M. Defurne and A. Deur and S. Diehl and C. Dilks and C. Djalali and R. Dupre and H. Egiyan and Alaoui, \{A. El\} and Fassi, \{L. El\} and L. Elouadrhiri and S. Fegan and A. Filippi and Jo, \{H. S.\}",

note = "Publisher Copyright: {\textcopyright} 2024 authors.",

year = "2024",

month = nov,

day = "22",

doi = "10.1103/PhysRevLett.133.211903",

language = "English",

volume = "133",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "21",

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TY - JOUR

T1 - First Measurement of Deeply Virtual Compton Scattering on the Neutron with Detection of the Active Neutron

AU - (CLAS Collaboration)

AU - Hobart, A.

AU - Niccolai, S.

AU - Čuić, M.

AU - Kumerički, K.

AU - Achenbach, P.

AU - Alvarado, J. S.

AU - Armstrong, W. R.

AU - Atac, H.

AU - Avakian, H.

AU - Baashen, L.

AU - Baltzell, N. A.

AU - Barion, L.

AU - Bashkanov, M.

AU - Battaglieri, M.

AU - Benkel, B.

AU - Benmokhtar, F.

AU - Bianconi, A.

AU - Biselli, A. S.

AU - Boiarinov, S.

AU - Bondi, M.

AU - Booth, W. A.

AU - Bossù, F.

AU - Brinkmann, K. Th

AU - Briscoe, W. J.

AU - Brooks, W. K.

AU - Bueltmann, S.

AU - Burkert, V. D.

AU - Cao, T.

AU - Capobianco, R.

AU - Carman, D. S.

AU - Chatagnon, P.

AU - Ciullo, G.

AU - Cole, P. L.

AU - Contalbrigo, M.

AU - D'Angelo, A.

AU - Dashyan, N.

AU - De Vita, R.

AU - Defurne, M.

AU - Deur, A.

AU - Diehl, S.

AU - Dilks, C.

AU - Djalali, C.

AU - Dupre, R.

AU - Egiyan, H.

AU - Alaoui, A. El

AU - Fassi, L. El

AU - Elouadrhiri, L.

AU - Fegan, S.

AU - Filippi, A.

AU - Jo, H. S.

PY - 2024/11/22

Y1 - 2024/11/22

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/85210925082

U2 - 10.1103/PhysRevLett.133.211903

DO - 10.1103/PhysRevLett.133.211903

M3 - Article

C2 - 39642503

AN - SCOPUS:85210925082

SN - 0031-9007

VL - 133

JO - Physical Review Letters

JF - Physical Review Letters

IS - 21

M1 - 211903

ER -

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

Abstract

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