CHIRAL SYMMETRY AND THE CHARGE ASYMMETRY OF THE SSBAR DISTRIBUTION IN THE PROTON

被引：80

作者：

BURKARDT, M

WARR, BJ

机构：

[1] Stanford Linear Accelerator Center, Stanford University, Stanford

来源：

PHYSICAL REVIEW D | 1992年 / 45卷 / 03期

关键词：

D O I：

10.1103/PhysRevD.45.958

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Recently it has been suggested that a sizeable fraction of the strange and charm quarks in a nucleon-the so-called "intrinsic strangeness of charm"-have momentum distributions which extend to large x(bj). This effect is enhanced if these virtual heavy quarks live long enough so that many interactions with the rest of the nucleon can occur. It is shown that the same mechanism responsible for the intrinsic component also leads to a sizeable charge asymmetry of the corresponding spin and momentum distributions.

引用

页码：958 / 964

页数：7

共 31 条

[1] EXPERIMENTAL-STUDY OF OPPOSITE-SIGN DIMUONS PRODUCED IN NEUTRINO AND ANTINEUTRINO INTERACTIONS [J].

ABRAMOWICZ, H ;

DEGROOT, JGH ;

KNOBLOCH, J ;

MAY, J ;

PALAZZI, P ;

PARA, A ;

RANJARD, F ;

ROTHBERG, J ;

VONRUDEN, W ;

SCHLATTER, WD ;

STEINBERGER, J ;

TAUREG, H ;

WAHL, H ;

WOTSCHACK, J ;

EISELE, F ;

KLASEN, HP ;

KLEINKNECHT, K ;

LIERL, H ;

PSZOLA, B ;

RENK, B ;

WILLUTZKI, HJ ;

DYDAK, F ;

FLOTTMANN, T ;

GEWENIGER, C ;

KROLIKOWSKI, J ;

TITTEL, K ;

GUYOT, C ;

MERLO, JP ;

PEREZ, P ;

PEYAUD, B ;

RANDER, J ;

SCHULLER, JP ;

TURLAY, R ;

HE, JT ;

RUAN, TZ ;

WU, WM .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1982, 15 (01) :19-31

[2] ASYMPTOTIC FREEDOM IN PARTON LANGUAGE [J].

ALTARELLI, G ;

PARISI, G .

NUCLEAR PHYSICS B, 1977, 126 (02) :298-318

[3] NUCLEAR EFFECTS IN DEEP-INELASTIC LEPTON SCATTERING [J].

BERGER, EL ;

COESTER, F .

PHYSICAL REVIEW D, 1985, 32 (05) :1071-1084

[4] FLAVOR MIXING VIA DYNAMIC CHIRAL SYMMETRY-BREAKING [J].

BERNARD, V ;

JAFFE, RL ;

MEISSNER, UG .

PHYSICS LETTERS B, 1987, 198 (01) :92-98

[5]

BERNARD V, 1988, NUCL PHYS B, V308, P758

[6] THE EMC EFFECT - WITH EMPHASIS ON CONVENTIONAL NUCLEAR CORRECTIONS [J].

BICKERSTAFF, RP ;

THOMAS, AW .

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, 1989, 15 (10) :1523-1569

[7] INTRINSIC HEAVY-QUARK STATES [J].

BRODSKY, SJ ;

PETERSON, C ;

SAKAI, N .

PHYSICAL REVIEW D, 1981, 23 (11) :2745-2757

[8] THE INTRINSIC CHARM OF THE PROTON [J].

BRODSKY, SJ ;

HOYER, P ;

PETERSON, C ;

SAKAI, N .

PHYSICS LETTERS B, 1980, 93 (04) :451-455

[9] BOUND-VALENCE-QUARK CONTRIBUTIONS TO HADRON STRUCTURE FUNCTIONS [J].

BRODSKY, SJ ;

SCHMIDT, I .

PHYSICAL REVIEW D, 1991, 43 (01) :179-184

[10]

BRODSKY SJ, 1980, PHYS REV D, V22, P2157

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