SU(2) Flavor Asymmetry of the Proton Sea in Chiral Effective Theory
- North Carolina State Univ., Raleigh, NC (United States)
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
We refine the computation of the $$\bar{d}$$ - $$\bar{u}$$ flavor asymmetry in the proton sea with a complementary effort to reveal the dynamics of pion exchange in high-energy processes. In particular, we discuss the efficacy of pion exchange models to simultaneously describe leading neutron electroproduction at HERA along with the $$\bar{d}$$ - $$\bar{u}$$ flavor asymmetry in the proton. A detailed χ2 analysis of the ZEUS and H1 data, when combined with constraints on the pion flux from Drell-Yan data, allows regions of applicability of one-pion exchange to be delineated. Based on the fit results, we also address a possible estimate for leading proton structure functions in upcoming tagged deep-inelastic scattering experiments at Jefferson Lab on the deuteron with forward protons.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- DOE Contract Number:
- AC05-06OR23177; FG02-03ER41260; CE110001104; FL0992247; DP151103101; 11475186
- OSTI ID:
- 1329016
- Report Number(s):
- JLAB-THY-15-2269; DOE/OR/23177-3964
- Journal Information:
- Few-Body Systems, Vol. 57, Issue 7; Conference: Light Cone 2015, September 21-25, 2015, Frascati, Italy
- Country of Publication:
- United States
- Language:
- English
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