Transversity quark distributions in a covariant quark-diquark model

Journal Article · Tue Jan 01 00:00:00 EST 2008 · Phys.Lett.B

DOI:https://doi.org/10.1016/j.physletb.2007.09.071· OSTI ID:914442

Cloet, I C; Bentz, W; Thomas, A W

Transversity quark light-cone momentum distributions are calculated for the nucleon. We utilize a modified Nambu--Jona-Lasinio model in which confinement is simulated by eliminating unphysical thresholds for nucleon decay into quarks. The nucleon bound state is obtained by solving the relativistic Faddeev equation in the quark-diquark approximation, where both scalar and axial-vector diquark channels are included. Particular attention is paid to comparing our results with the recent experimental extraction of the transversity distributions by Anselmino et al. We also compare our transversity results with earlier spin-independent and helicity quark distributions calculated in the same approach.

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE - Office of Energy Research (ER)
• DOE Contract Number: AC05-84ER40150
• OSTI ID: 914442
• Report Number(s): JLAB-THY-07-714; DOE/ER/40150-4306; arXiv:0708.3246; TRN: US0802881
• Journal Information: Phys.Lett.B, Vol. 659, Issue 1-2
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOUND STATE
CONFINEMENT
DECAY
FADDEEV EQUATIONS
HELICITY
LIGHT CONE
NUCLEONS
QUARKS
SCALARS