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Title: A glimpse of gluons through deeply virtual compton scattering on the proton

Journal Article · · Nature Communications
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  1. Univ. Paris-Saclay, Gif-sur-Yvette (France)
  2. Institut de Physique Nucleaire CNRS-IN2P, Orsay (France); Univ. de Valencia, Burjassot (Spain)
  3. Syracuse Univ., Syracuse, NY (United States)
  4. Texas A&M Univ.-Kingsville, Kingsville, TX (United States)
  5. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  6. California State Univ., Los Angeles, CA (United States)
  7. INFN/Sezione di Catania, Catania (Italy)
  8. Clermont Univ., Aubire Cedex (France)
  9. Florida Intl Univ., Miami, FL (United States)
  10. Clermont Univ., Aubire Cedex (France); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
  11. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
  12. Old Dominion Univ., Norfolk, VA (United States)
  13. Ohio Univ., Athens, OH (United States)
  14. Hampton Univ., Hampton, VA (United States)
  15. Univ. di Bari, Bari (Italy)
  16. Institut de Physique Nucleaire CNRS-IN2P, Orsay (France)
  17. Rutgers, The State Univ. of New Jersey, New Brunswick, NJ (United States)
  18. Temple Univ., Philadelphia, PA (United States)
  19. Carnegie Mellon Univ., Pittsburgh, PA (United States)
  20. Univ. Paris-Saclay, Gif-sur-Yvette (France); Clermont Univ., Aubire Cedex (France); Univ. of Connecticut, Storrs, CT (United States)
  21. INFN/Sezione Sanita, Roma (Italy)
  22. Kharkov Institute of Physics and Technology, Kharkiv Oblast (Ukraine)
  23. North Carolina Central Univ., Durham, NC (United States)
  24. Longwood Univ., Farmville, VA (United States)
  25. The Catholic Univ. of America, Washington, D.C. (United States)
  26. Duke Univ., Durham, NC (United States)
  27. Clermont Univ., Aubire Cedex (France); Old Dominion Univ., Norfolk, VA (United States)
  28. Seoul National Univ., Seoul (South Korea)
  29. College of William and Mary, Williamsburg, VA (United States)
  30. Tel Aviv Univ., Tel Aviv (Israel)
  31. Univ. of Virginia, Charlottesville, VA (United States)
  32. Kent State Univ., Kent, OH (United States)
  33. Univ. of Massachusetts, Amherst, MA (United States)
  34. Faculte des Sciences de Monastir, Monastir (Tunisia)
  35. Univ. of Ljubljana, Ljubljana (Slovenia)
  36. Institut de Physique Nucleaire CNRS-IN2P3, Orsay (France); Clermont Univ., Aubire Cedex (France)
  37. Institut de Physique Nucleaire CNRS-IN2P3, Orsay (France)
  38. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  39. Norfolk State Univ., Norfolk, VA (United States)
  40. Stony Brook Univ., Stony Brook, NY (United States)
  41. Univ. of Virginia, Charlottesville, VA (United States); Kasetsart Univ., Maha Nakhon (Thailand)
  42. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Temple Univ., Philadelphia, PA (United States)
  43. Yerevan Physics Inst. (YerPhI), Yerevan (Armenia)
  44. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Univ. of New Hampshire, Durham, NH (United States)
  45. George Washington Univ., Washington, DC (United States)
  46. INFN/Sezione di Roma, Roma (Italy)
  47. Argonne National Lab. (ANL), Lemont, IL (United States)
+ Show Author Affiliations

The internal structure of nucleons (protons and neutrons) remains one of the greatest outstanding problems in modern nuclear physics. By scattering high-energy electrons off a proton we are able to resolve its fundamental constituents and probe their momenta and positions. Here we investigate the dynamics of quarks and gluons inside nucleons using deeply virtual Compton scattering (DVCS)—a highly virtual photon scatters off the proton, which subsequently radiates a photon. DVCS interferes with the Bethe-Heitler (BH) process, where the photon is emitted by the electron rather than the proton. We report herein the full determination of the BH-DVCS interference by exploiting the distinct energy dependences of the DVCS and BH amplitudes. In the regime where the scattering is expected to occur off a single quark, measurements show an intriguing sensitivity to gluons, the carriers of the strong interaction.

Research Organization:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Mississippi State Univ., Mississippi State, MS (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP)
Grant/Contract Number:
AC05-06OR23177; FG02-07ER41528
OSTI ID:
1416336
Alternate ID(s):
OSTI ID: 1604278
Report Number(s):
JLAB-PHY-17-2492; DOE/OR/23177-4163; arXiv:1703.09442; PII: 1819; TRN: US1800927
Journal Information:
Nature Communications, Vol. 8, Issue 1; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 33 works
Citation information provided by
Web of Science

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Cited By (7)

Deeply virtual Compton scattering off the neutron journal January 2020
Study of kaon structure using the light-cone quark model journal October 2019
Border and skewness functions from a leading order fit to DVCS data journal November 2018
Electron-ion collider in China journal June 2021
The DVCS experiment in Hall C at Jefferson Lab with the new NPS detector conference January 2020
Basic properties of GPDs and modelling of the latter
  • Mezrag, Cédric; Chouika, Nabil; Moutarde, Herve
  • Proceedings of Light Cone 2019 - QCD on the light cone: from hadrons to heavy ions — PoS(LC2019) https://doi.org/10.22323/1.374.0065
conference May 2020
Two-photon processes in conformal QCD: Resummation of the descendants of leading-twist operators preprint January 2020

Linked Research (41)

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS