Spin of the proton

Conference · Sun Dec 01 00:00:00 EST 1996

OSTI ID:756298

Isgur, Nathan

The author argues that their response to the spin crisis should not be to abandon the naive quark model baby, but rather to allow it to mature. In particular, he advocates dressing the baby in qq pairs, first showing that this can be done without compromising the naive quark model's success with either spectroscopy or the OZI rule. Finally, he shows that despite their near invisibility elsewhere, pairs do play an important role in the proton's spin structure by creating an antipolarized qq sea. In the context of an explicit calculation he demonstrates that it is plausible that the entire ''spin crisis'' arises from this effect.

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Energy Research (ER) (US)
• DOE Contract Number: AC05-84ER40150
• OSTI ID: 756298
• Report Number(s): DOE/ER/40150-1550; JLAB-THY-97-14; TRN: US0003058
• Resource Relation: Conference: Satellite Conference on Hadron Spectroscopy of the 25th INS International Symposium on Nuclear and Particle Physics with High-Intensity Proton Accelerators, Tokyo (JP), 12/1996; Other Information: PBD: 1 Dec 1996
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
PROTONS
SPIN
QUARK MODEL
QUARKS