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Titolo:
Is the polarized antiquark sea in the nucleon flavor symmetric? - art. no.025208
Autore:
Bhalerao, RS;
Indirizzi:
Tata Inst Fundamental Res, Dept Theoret Phys, Colaba 400005, Mumbai, IndiaTata Inst Fundamental Res Colaba Mumbai India 400005 00005, Mumbai, India
Titolo Testata:
PHYSICAL REVIEW C
fascicolo: 2, volume: 6302, anno: 2001,
pagine: 5208 -
SICI:
0556-2813(200102)6302:2<5208:ITPASI>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
DEEP-INELASTIC SCATTERING; N-C LIMIT; SPIN STRUCTURE FUNCTIONS; PARTON MODEL ANALYSIS; QUARK DISTRIBUTIONS; QCD ANALYSIS; DENSITIES; ASYMMETRIES; SUM;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
42
Recensione:
Indirizzi per estratti:
Indirizzo: Bhalerao, RS Tata Inst Fundamental Res, Dept Theoret Phys, Homi Bhabha Rd,Colaba 400005, Mumbai, India Tata Inst Fundamental Res Homi Bhabha Rd Colaba Mumbai India 400005
Citazione:
R.S. Bhalerao, "Is the polarized antiquark sea in the nucleon flavor symmetric? - art. no.025208", PHYS REV C, 6302(2), 2001, pp. 5208

Abstract

We show that the model which naturally explains the (u) over bar not equal(d) over bar asymmetry in the nucleon and is in quantitative agreement with the Gottfried sum rule data, also predicts that in the proton Delta(u) over bar >0>Delta(s) over bar>Delta(d) over bar and Delta(u) over bar-Delta(d) over bar >(d) over bar-(u) over bar >0. At the input scale, these resultscan be derived even analytically. Thus the violation of the flavor symmetry is more serious in the polarized case than in the unpolarized case. In contrast, many recent analyses of the polarized data have made a simplifying assumption that all the three Delta(q) over bar 's have the same sign and magnitude. We point out the need to redo these analyses, allowing for the alternate scenario as described above. We present predictions of the model for the W- asymmetry in polarized pp scattering, which can be tested at RHIC;these are quite different from those available in the literature.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/01/20 alle ore 10:16:03