Exploring the Structure of the Bound Proton with Deeply Virtual Compton Scattering - Institut de Physique Nucléaire d'Orsay
Journal Articles Physical Review Letters Year : 2019

Exploring the Structure of the Bound Proton with Deeply Virtual Compton Scattering

M. Hattawy (1) , N.A. Baltzell , R. Dupré (1) , S. Bültmann , R. de Vita , A. El Alaoui , L. El Fassi , H. Egiyan , F.X. Girod , M. Guidal (1) , K. Hafidi , D. Jenkins , S. Liuti , Y. Perrin (2) , S. Stepanyan , B. Torayev , E. Voutier (1, 2) , S. Adhikari , Giovanni Angelini , C. Ayerbe Gayoso , L. Barion , M. Battaglieri , I. Bedlinskiy , A.S. Biselli , F. Bossù (3) , W. Brooks , F. Cao , D.S. Carman , A. Celentano , P. Chatagnon (1) , T. Chetry , G. Ciullo , L. Clark , P.L. Cole , M. Contalbrigo , V. Crede , A. d'Angelo , N. Dashyan , E. de Sanctis , M. Defurne (3) , A. Deur , S. Diehl , C. Djalali , M. Ehrhart (1) , P. Eugenio , S. Fegan , A. Filippi , T.A. Forest , A. Fradi (1) , M. Garçon (3) , G. Gavalian , N. Gevorgyan , G.P. Gilfoyle , K.L. Giovanetti , E. Golovatch , R.W. Gothe , K.A. Griffioen , N. Harrison , F. Hauenstein , T.B. Hayward , D. Heddle , K. Hicks , M. Holtrop , Y. Ilieva , D.G. Ireland , E.L. Isupov , H.S. Jo , S. Johnston , D. Keller , G. Khachatryan , M. Khachatryan , A. Khanal , M. Khandaker , C.W. Kim , W. Kim , F.J. Klein , V. Kubarovsky , S.E. Kuhn , L. Lanza , M.L. Kabir , P. Lenisa , K. Livingston , I.J.D. Macgregor , D. Marchand (1) , N. Markov , M. Mayer , B. Mckinnon , Z.E. Meziani , T. Mineeva , M. Mirazita , R.A. Montgomery , C. Munoz Camacho (1) , P. Nadel-Turonski , S. Niccolai (1) , A.I. Ostrovidov , L.L. Pappalardo , R. Paremuzyan , E. Pasyuk , O. Pogorelko , J. Poudel , Y. Prok , D. Protopopescu , M. Ripani , D. Riser , A. Rizzo , G. Rosner , P. Rossi , F. Sabatié (3) , C. Salgado , R.A. Schumacher , Y.G. Sharabian , Iu. Skorodumina , D. Sokhan , O. Soto , N. Sparveris , S. Strauch , M. Taiuti , J.A. Tan , N. Tyler , M. Ungaro , H. Voskanyan , R. Wang (1) , D.P. Watts , X. Wei , L.B. Weinstein , M.H. Wood , N. Zachariou , J. Zhang , Z.W. Zhao
N.A. Baltzell
  • Function : Author
R. Dupré
S. Bültmann
  • Function : Author
R. de Vita
  • Function : Author
A. El Alaoui
  • Function : Author
L. El Fassi
  • Function : Author
H. Egiyan
F.X. Girod
  • Function : Author
K. Hafidi
  • Function : Author
D. Jenkins
  • Function : Author
S. Liuti
  • Function : Author
S. Stepanyan
  • Function : Author
B. Torayev
  • Function : Author
S. Adhikari
  • Function : Author
Giovanni Angelini
  • Function : Author
C. Ayerbe Gayoso
  • Function : Author
L. Barion
M. Battaglieri
  • Function : Author
I. Bedlinskiy
A.S. Biselli
  • Function : Author
W. Brooks
  • Function : Author
F. Cao
  • Function : Author
D.S. Carman
  • Function : Author
A. Celentano
T. Chetry
  • Function : Author
G. Ciullo
L. Clark
  • Function : Author
P.L. Cole
M. Contalbrigo
  • Function : Author
V. Crede
  • Function : Author
A. d'Angelo
N. Dashyan
  • Function : Author
E. de Sanctis
  • Function : Author
A. Deur
S. Diehl
  • Function : Author
C. Djalali
  • Function : Author
M. Ehrhart
P. Eugenio
  • Function : Author
S. Fegan
  • Function : Author
A. Filippi
  • Function : Author
T.A. Forest
  • Function : Author
G. Gavalian
  • Function : Author
N. Gevorgyan
  • Function : Author
G.P. Gilfoyle
K.L. Giovanetti
  • Function : Author
E. Golovatch
  • Function : Author
R.W. Gothe
K.A. Griffioen
  • Function : Author
N. Harrison
  • Function : Author
F. Hauenstein
  • Function : Author
T.B. Hayward
  • Function : Author
D. Heddle
  • Function : Author
K. Hicks
  • Function : Author
M. Holtrop
Y. Ilieva
  • Function : Author
D.G. Ireland
  • Function : Author
E.L. Isupov
  • Function : Author
H.S. Jo
  • Function : Author
S. Johnston
  • Function : Author
D. Keller
G. Khachatryan
  • Function : Author
M. Khachatryan
  • Function : Author
A. Khanal
  • Function : Author
M. Khandaker
C.W. Kim
  • Function : Author
W. Kim
  • Function : Author
F.J. Klein
  • Function : Author
V. Kubarovsky
  • Function : Author
S.E. Kuhn
  • Function : Author
L. Lanza
M.L. Kabir
  • Function : Author
P. Lenisa
K. Livingston
  • Function : Author
I.J.D. Macgregor
N. Markov
  • Function : Author
M. Mayer
  • Function : Author
B. Mckinnon
  • Function : Author
Z.E. Meziani
T. Mineeva
M. Mirazita
  • Function : Author
R.A. Montgomery
  • Function : Author
P. Nadel-Turonski
  • Function : Author
A.I. Ostrovidov
  • Function : Author
L.L. Pappalardo
  • Function : Author
R. Paremuzyan
  • Function : Author
E. Pasyuk
O. Pogorelko
  • Function : Author
J. Poudel
  • Function : Author
Y. Prok
  • Function : Author
D. Protopopescu
M. Ripani
D. Riser
  • Function : Author
A. Rizzo
  • Function : Author
G. Rosner
  • Function : Author
P. Rossi
  • Function : Author
C. Salgado
  • Function : Author
R.A. Schumacher
  • Function : Author
Y.G. Sharabian
  • Function : Author
Iu. Skorodumina
  • Function : Author
D. Sokhan
  • Function : Author
O. Soto
  • Function : Author
N. Sparveris
S. Strauch
  • Function : Author
M. Taiuti
  • Function : Author
J.A. Tan
  • Function : Author
N. Tyler
  • Function : Author
M. Ungaro
  • Function : Author
H. Voskanyan
  • Function : Author
D.P. Watts
  • Function : Author
X. Wei
  • Function : Author
L.B. Weinstein
  • Function : Author
M.H. Wood
  • Function : Author
N. Zachariou
J. Zhang
  • Function : Author
Z.W. Zhao
  • Function : Author

Abstract

In the past two decades, deeply virtual Compton scattering of electrons has been successfully used to advance our knowledge of the partonic structure of the free proton and investigate correlations between the transverse position and the longitudinal momentum of quarks inside the nucleon. Meanwhile, the structure of bound nucleons in nuclei has been studied in inclusive deep-inelastic lepton scattering experiments off nuclear targets, showing a significant difference in longitudinal momentum distribution of quarks inside the bound nucleon, known as the EMC effect. In this Letter, we report the first beam spin asymmetry (BSA) measurement of exclusive deeply virtual Compton scattering off a proton bound in He4. The data used here were accumulated using a 6 GeV longitudinally polarized electron beam incident on a pressurized He4 gaseous target placed within the CLAS spectrometer in Hall-B at the Thomas Jefferson National Accelerator Facility. The azimuthal angle (ϕ) dependence of the BSA was studied in a wide range of virtual photon and scattered proton kinematics. The Q2, xB, and t dependencies of the BSA on the bound proton are compared with those on the free proton. In the whole kinematical region of our measurements, the BSA on the bound proton is smaller by 20% to 40%, indicating possible medium modification of its partonic structure.
Fichier principal
Vignette du fichier
PhysRevLett.123.032502-accepted.pdf (480.5 Ko) Télécharger le fichier
Origin Files produced by the author(s)

Dates and versions

hal-01975141 , version 1 (30-10-2024)

Identifiers

Cite

M. Hattawy, N.A. Baltzell, R. Dupré, S. Bültmann, R. de Vita, et al.. Exploring the Structure of the Bound Proton with Deeply Virtual Compton Scattering. Physical Review Letters, 2019, 123 (3), pp.032502. ⟨10.1103/PhysRevLett.123.032502⟩. ⟨hal-01975141⟩
96 View
0 Download

Altmetric

Share

More