Longitudinal target-spin asymmetries for deeply virtual Compton scattering - IN2P3 - Institut national de physique nucléaire et de physique des particules
Journal Articles Physical Review Letters Year : 2015

Longitudinal target-spin asymmetries for deeply virtual Compton scattering

E. Seder , A. Biselli , S. Pisano (1) , S. Niccolai (1) , G.D. Smith , K. Joo , K. Adhikari , M.J. Amaryan , M.D. Anderson , S. Anefalos Pereira , H. Avakian , M. Battaglieri , I. Bedlinskiy , J. Bono , S. Boiarinov , P. Bosted , W. Briscoe , J. Brock , W.K. Brooks , S. Bultmann , V.D. Burkert , D.S. Carman , C. Carlin , A. Celentano , S. Chandavar , G. Charles , L. Colaneri , P.L. Cole , M. Contalbrigo , D. Crabb , V. Crede , A. d'Angelo , N. Dashyan , R. De Vita , E. De Sanctis , A. Deur , C. Djalali , D. Doughty , R. Dupre (1) , L. El Fassi , L. Elouadrhiri , P. Eugenio , G. Fedotov , S. Fegan , A. Filippi , J.A. Fleming , A. Fradi , B. Garillon (1) , M. Garçon (2) , N. Gevorgyan , Y. Ghandilyan , K.L. Giovanetti , F.X. Girod (2) , J.T. Goetz , W. Gohn , R.W. Gothe , K.A. Griffioen , B. Guegan (1) , M. Guidal (1) , L. Guo , K. Hafidi , H. Hakobyan , C. Hanretty , N. Harrison , M. Hattawy , N. Hirlinger Saylor , M. Holtrop , S.M. Hughes , Y. Ilieva , D.G. Ireland , B.S. Ishkhanov , E.L. Isupov , H.S. Jo (1) , S. Joosten , C.D. Keith , D. Keller , G. Khachatryan , M. Khandaker , A. Kim , W. Kim , A. Klein , F.J. Klein , S. Koirala , V. Kubarovsky , S.E. Kuhn , P. Lenisa , K. Livingston , H.Y. Lu , I.J.D. Macgregor , N. Markov , M. Mayer , B. Mckinnon , D.G. Meekins , T. Mineeva , M. Mirazita , V. Mokeev (1) , R. Montgomery , C.I. Moody , H. Moutarde (2) , A Movsisyan , C. Muñoz Camacho (1) , P. Nadel-Turonski , I. Niculescu , M. Osipenko , A.I. Ostrovidov , M. Paolone , L.L. Pappalardo , K. Park , S. Park , E. Pasyuk , P. Peng , W. Phelps , O. Pogorelko , J.W. Price , Y. Prok , D. Protopopescu , A.J.R. Puckett , M. Ripani , A. Rizzo , G. Rosner , P. Rossi , Pascal Roy , F. Sabatié (2) , C. Salgado , D. Schott , R.A. Schumacher , I. Senderovich , A. Simonyan , I. Skorodumina , D. Sokhan , N. Sparveris , S. Stepanyan , P. Stoler , I.I. Strakovsky , S. Strauch , V. Sytnik , M. Taiuti , W. Tang , Y. Tian , M. Ungaro , H. Voskanyan , E. Voutier (3) , N.K. Walford , D.P. Watts , X. Wei , L.B. Weinstein , M.H. Wood , N. Zachariou , L. Zana , J. Zhang , I. Zonta
E. Seder
  • Function : Author
A. Biselli
  • Function : Author
G.D. Smith
  • Function : Author
K. Joo
  • Function : Author
K. Adhikari
  • Function : Author
M.J. Amaryan
  • Function : Author
M.D. Anderson
  • Function : Author
S. Anefalos Pereira
  • Function : Author
H. Avakian
  • Function : Author
M. Battaglieri
  • Function : Author
I. Bedlinskiy
J. Bono
  • Function : Author
S. Boiarinov
  • Function : Author
P. Bosted
  • Function : Author
W. Briscoe
  • Function : Author
J. Brock
  • Function : Author
W.K. Brooks
S. Bultmann
  • Function : Author
V.D. Burkert
  • Function : Author
D.S. Carman
  • Function : Author
C. Carlin
  • Function : Author
A. Celentano
S. Chandavar
  • Function : Author
G. Charles
  • Function : Author
L. Colaneri
  • Function : Author
P.L. Cole
M. Contalbrigo
  • Function : Author
D. Crabb
  • Function : Author
V. Crede
  • Function : Author
A. d'Angelo
N. Dashyan
  • Function : Author
R. De Vita
  • Function : Author
E. De Sanctis
  • Function : Author
A. Deur
C. Djalali
  • Function : Author
D. Doughty
  • Function : Author
R. Dupre
L. El Fassi
  • Function : Author
L. Elouadrhiri
  • Function : Author
P. Eugenio
  • Function : Author
G. Fedotov
  • Function : Author
S. Fegan
  • Function : Author
A. Filippi
  • Function : Author
J.A. Fleming
  • Function : Author
A. Fradi
  • Function : Author
N. Gevorgyan
  • Function : Author
Y. Ghandilyan
  • Function : Author
K.L. Giovanetti
  • Function : Author
J.T. Goetz
  • Function : Author
W. Gohn
  • Function : Author
R.W. Gothe
K.A. Griffioen
  • Function : Author
L. Guo
  • Function : Author
K. Hafidi
  • Function : Author
H. Hakobyan
  • Function : Author
C. Hanretty
  • Function : Author
N. Harrison
  • Function : Author
M. Hattawy
  • Function : Author
N. Hirlinger Saylor
  • Function : Author
M. Holtrop
S.M. Hughes
  • Function : Author
Y. Ilieva
  • Function : Author
D.G. Ireland
  • Function : Author
B.S. Ishkhanov
  • Function : Author
E.L. Isupov
  • Function : Author
S. Joosten
C.D. Keith
  • Function : Author
D. Keller
G. Khachatryan
  • Function : Author
M. Khandaker
A. Kim
  • Function : Author
W. Kim
  • Function : Author
A. Klein
  • Function : Author
F.J. Klein
  • Function : Author
S. Koirala
  • Function : Author
V. Kubarovsky
  • Function : Author
S.E. Kuhn
  • Function : Author
P. Lenisa
K. Livingston
  • Function : Author
H.Y. Lu
  • Function : Author
I.J.D. Macgregor
N. Markov
  • Function : Author
M. Mayer
  • Function : Author
B. Mckinnon
  • Function : Author
D.G. Meekins
  • Function : Author
T. Mineeva
M. Mirazita
  • Function : Author
V. Mokeev
R. Montgomery
  • Function : Author
C.I. Moody
  • Function : Author
A Movsisyan
  • Function : Author
P. Nadel-Turonski
  • Function : Author
I. Niculescu
  • Function : Author
M. Osipenko
A.I. Ostrovidov
  • Function : Author
M. Paolone
L.L. Pappalardo
  • Function : Author
K. Park
  • Function : Author
S. Park
  • Function : Author
E. Pasyuk
P. Peng
  • Function : Author
W. Phelps
  • Function : Author
O. Pogorelko
  • Function : Author
J.W. Price
  • Function : Author
Y. Prok
  • Function : Author
D. Protopopescu
A.J.R. Puckett
  • Function : Author
M. Ripani
A. Rizzo
  • Function : Author
G. Rosner
  • Function : Author
P. Rossi
  • Function : Author
Pascal Roy
  • Function : Author
C. Salgado
  • Function : Author
D. Schott
  • Function : Author
R.A. Schumacher
  • Function : Author
I. Senderovich
  • Function : Author
A. Simonyan
  • Function : Author
I. Skorodumina
  • Function : Author
D. Sokhan
  • Function : Author
N. Sparveris
S. Stepanyan
  • Function : Author
P. Stoler
  • Function : Author
I.I. Strakovsky
  • Function : Author
S. Strauch
  • Function : Author
V. Sytnik
  • Function : Author
M. Taiuti
  • Function : Author
W. Tang
  • Function : Author
Y. Tian
  • Function : Author
M. Ungaro
  • Function : Author
H. Voskanyan
  • Function : Author
N.K. Walford
  • Function : Author
D.P. Watts
  • Function : Author
X. Wei
  • Function : Author
L.B. Weinstein
  • Function : Author
M.H. Wood
  • Function : Author
N. Zachariou
L. Zana
J. Zhang
  • Function : Author
I. Zonta
  • Function : Author

Abstract

A measurement of the electroproduction of photons off protons in the deeply inelastic regime was performed at Jefferson Lab using a nearly 6-GeV electron beam, a longitudinally polarized proton target and the CEBAF Large Acceptance Spectrometer. Target-spin asymmetries for $ep\to e'p'\gamma$ events, which arise from the interference of the deeply virtual Compton scattering and the Bethe-Heitler processes, were extracted over the widest kinematics in $Q^2$, $x_B$, $t$ and $\phi$, for 166 four-dimensional bins. In the framework of Generalized Parton Distributions (GPDs), at leading twist the $t$ dependence of these asymmetries provides insight on the spatial distribution of the axial charge of the proton, which appears to be concentrated in its center. These results also bring important and necessary constraints for the existing parametrizations of chiral-even GPDs.
Fichier principal
Vignette du fichier
PhysRevLett.114.032001-accepted.pdf (605.18 Ko) Télécharger le fichier
Origin Files produced by the author(s)

Dates and versions

in2p3-01077848 , version 1 (30-10-2024)

Identifiers

Cite

E. Seder, A. Biselli, S. Pisano, S. Niccolai, G.D. Smith, et al.. Longitudinal target-spin asymmetries for deeply virtual Compton scattering. Physical Review Letters, 2015, 114, pp.032001. ⟨10.1103/PhysRevLett.114.032001⟩. ⟨in2p3-01077848⟩
14 View
0 Download

Altmetric

Share

More