Exclusive η electroproduction at W>2 GeV with CLAS and transversity generalized parton distributions

CLAS Collaboration

doi:10.1103/PhysRevC.95.035202

Exclusive η electroproduction at W>2 GeV with CLAS and transversity generalized parton distributions

CLAS Collaboration

Alikhanov Institute for Theoretical and Experimental Physics
Rensselaer Polytechnic Institute
Thomas Jefferson National Accelerator Facility
Mississippi State University
Florida State University
National Institute for Nuclear Physics
Université Paris-Saclay
University of South Carolina
Kyungpook National University
Carnegie Mellon University
Fairfield University
George Washington University
Ohio University
CNRS/IN2P3
University of Glasgow
University of Connecticut
Idaho State University
University of Rome Tor Vergata
A. Alikhanian Yerevan Institute of Physics
Universidad Técnica Federico Santa Maria
Lomonosov Moscow State University
Christopher Newport University
College of William and Mary
University of Edinburgh
University of Richmond
James Madison University

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

24 Scopus citations

Abstract

The cross section of the exclusive η electroproduction reaction ep→e′p′η was measured at Jefferson Laboratory with a 5.75 GeV electron beam and the CLAS detector. Differential cross sections d4σ/dtdQ2dxBdφη and structure functions σU=σT+ϵσL,σTT, and σLT, as functions of t, were obtained over a wide range of Q2 and xB. The η structure functions are compared with those previously measured for π0 at the same kinematics. At low t, both π0 and η are described reasonably well by generalized parton distributions (GPDs) in which chiral-odd transversity GPDs are dominant. The π0 and η data, when taken together, can facilitate the flavor decomposition of the transversity GPDs.

Original language	English
Article number	035202
Journal	Physical Review C
Volume	95
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevC.95.035202
State	Published - 10 Mar 2017

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10.1103/PhysRevC.95.035202

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@article{8eab3f9b16e144168268bcbb4079f3a4,

title = "Exclusive η electroproduction at W>2 GeV with CLAS and transversity generalized parton distributions",

abstract = "The cross section of the exclusive η electroproduction reaction ep→e′p′η was measured at Jefferson Laboratory with a 5.75 GeV electron beam and the CLAS detector. Differential cross sections d4σ/dtdQ2dxBdφη and structure functions σU=σT+ϵσL,σTT, and σLT, as functions of t, were obtained over a wide range of Q2 and xB. The η structure functions are compared with those previously measured for π0 at the same kinematics. At low t, both π0 and η are described reasonably well by generalized parton distributions (GPDs) in which chiral-odd transversity GPDs are dominant. The π0 and η data, when taken together, can facilitate the flavor decomposition of the transversity GPDs.",

author = "\{CLAS Collaboration\} and I. Bedlinskiy and V. Kubarovsky and P. Stoler and Adhikari, \{K. P.\} and Z. Akbar and \{Anefalos Pereira\}, S. and H. Avakian and J. Ball and Baltzell, \{N. A.\} and M. Battaglieri and V. Batourine and Biselli, \{A. S.\} and S. Boiarinov and Briscoe, \{W. J.\} and Burkert, \{V. D.\} and T. Cao and Carman, \{D. S.\} and A. Celentano and S. Chandavar and G. Charles and G. Ciullo and L. Clark and L. Colaneri and Cole, \{P. L.\} and M. Contalbrigo and V. Crede and A. D'Angelo and N. Dashyan and \{De Vita\}, R. and \{De Sanctis\}, E. and A. Deur and C. Djalali and R. Dupre and Alaoui, \{A. El\} and Fassi, \{L. El\} and L. Elouadrhiri and P. Eugenio and E. Fanchini and G. Fedotov and R. Fersch and A. Filippi and Fleming, \{J. A.\} and Forest, \{T. A.\} and M. Gar{\c c}on and N. Gevorgyan and Y. Ghandilyan and Gilfoyle, \{G. P.\} and Giovanetti, \{K. L.\} and Girod, \{F. X.\} and Jo, \{H. S.\}",

note = "Publisher Copyright: {\textcopyright} 2017 American Physical Society.",

year = "2017",

month = mar,

day = "10",

doi = "10.1103/PhysRevC.95.035202",

language = "English",

volume = "95",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

number = "3",

}

TY - JOUR

T1 - Exclusive η electroproduction at W>2 GeV with CLAS and transversity generalized parton distributions

AU - CLAS Collaboration

AU - Bedlinskiy, I.

AU - Kubarovsky, V.

AU - Stoler, P.

AU - Adhikari, K. P.

AU - Akbar, Z.

AU - Anefalos Pereira, S.

AU - Avakian, H.

AU - Ball, J.

AU - Baltzell, N. A.

AU - Battaglieri, M.

AU - Batourine, V.

AU - Biselli, A. S.

AU - Boiarinov, S.

AU - Briscoe, W. J.

AU - Burkert, V. D.

AU - Cao, T.

AU - Carman, D. S.

AU - Celentano, A.

AU - Chandavar, S.

AU - Charles, G.

AU - Ciullo, G.

AU - Clark, L.

AU - Colaneri, L.

AU - Cole, P. L.

AU - Contalbrigo, M.

AU - Crede, V.

AU - D'Angelo, A.

AU - Dashyan, N.

AU - De Vita, R.

AU - De Sanctis, E.

AU - Deur, A.

AU - Djalali, C.

AU - Dupre, R.

AU - Alaoui, A. El

AU - Fassi, L. El

AU - Elouadrhiri, L.

AU - Eugenio, P.

AU - Fanchini, E.

AU - Fedotov, G.

AU - Fersch, R.

AU - Filippi, A.

AU - Fleming, J. A.

AU - Forest, T. A.

AU - Garçon, M.

AU - Gevorgyan, N.

AU - Ghandilyan, Y.

AU - Gilfoyle, G. P.

AU - Giovanetti, K. L.

AU - Girod, F. X.

AU - Jo, H. S.

PY - 2017/3/10

Y1 - 2017/3/10

N2 - The cross section of the exclusive η electroproduction reaction ep→e′p′η was measured at Jefferson Laboratory with a 5.75 GeV electron beam and the CLAS detector. Differential cross sections d4σ/dtdQ2dxBdφη and structure functions σU=σT+ϵσL,σTT, and σLT, as functions of t, were obtained over a wide range of Q2 and xB. The η structure functions are compared with those previously measured for π0 at the same kinematics. At low t, both π0 and η are described reasonably well by generalized parton distributions (GPDs) in which chiral-odd transversity GPDs are dominant. The π0 and η data, when taken together, can facilitate the flavor decomposition of the transversity GPDs.

AB - The cross section of the exclusive η electroproduction reaction ep→e′p′η was measured at Jefferson Laboratory with a 5.75 GeV electron beam and the CLAS detector. Differential cross sections d4σ/dtdQ2dxBdφη and structure functions σU=σT+ϵσL,σTT, and σLT, as functions of t, were obtained over a wide range of Q2 and xB. The η structure functions are compared with those previously measured for π0 at the same kinematics. At low t, both π0 and η are described reasonably well by generalized parton distributions (GPDs) in which chiral-odd transversity GPDs are dominant. The π0 and η data, when taken together, can facilitate the flavor decomposition of the transversity GPDs.

UR - https://www.scopus.com/pages/publications/85015799004

U2 - 10.1103/PhysRevC.95.035202

DO - 10.1103/PhysRevC.95.035202

M3 - Article

AN - SCOPUS:85015799004

SN - 2469-9985

VL - 95

JO - Physical Review C

JF - Physical Review C

IS - 3

M1 - 035202

ER -

Exclusive η electroproduction at W>2 GeV with CLAS and transversity generalized parton distributions

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