PROTON SPIN STRUCTURE FROM LATTICE QCD

被引:109
作者
FUKUGITA, M
KURAMASHI, Y
OKAWA, M
UKAWA, A
机构
[1] INST ADV STUDY, PRINCETON, NJ 08540 USA
[2] NATL LAB HIGH ENERGY PHYS, KEK, TSUKUBA, IBARAKI 305, JAPAN
[3] UNIV TSUKUBA, INST PHYS, TSUKUBA, IBARAKI 305, JAPAN
关键词
D O I
10.1103/PhysRevLett.75.2092
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
A lattice QCD calculation of the proton matrix element of the flavor singlet axial-vector current is reported. Both the connected and disconnected contributions are calculated, for the latter employing the variant method of wall source without gauge fixing. From simulations in quenched QCD with the Wilson quark action on a 16(3) X 20 lattice at beta = 5.7 (the lattice spacing a approximate to 0.14 fm), we find Delta Sigma = Delta u + Delta d + Delta s = +0.638(54) - 0.347(46) - 0.109(30) = +0.18(IO) with the disconnected contribution to Delta u and Delta d equal to -0.119(44), which is reasonably consistent with the experiment.
引用
收藏
页码:2092 / 2095
页数:4
相关论文
共 28 条
[1]   MEASUREMENT OF THE (P)OVER-BARP-]PI+PI- AND (P)OVER-BARP-]K+K- ANNIHILATION FREQUENCIES IN A 5 MB HYDROGEN GAS-TARGET [J].
ABLEEV, VG ;
ADAMO, A ;
AGNELLO, M ;
ANDRIGHETTO, A ;
BALESTRA, F ;
BELLI, G ;
BENDISCIOLI, G ;
BERTIN, A ;
BOCCACCIO, P ;
BONAZZOLA, GC ;
BRESSANI, T ;
BRUSCHI, M ;
BUSSA, MP ;
BUSSO, L ;
CALVO, D ;
CAPPONI, M ;
CERELLO, P ;
CICALO, C ;
CORRADINI, M ;
COSTA, S ;
DANTONE, I ;
DECASTRO, S ;
DISEP, F ;
DONZELLA, A ;
FAVA, L ;
FELICIELLO, A ;
FERRERO, L ;
FILIPPI, A ;
FILIPPINI, V ;
GALLI, D ;
GARFAGNINI, R ;
GASTALDI, U ;
GIANOTTI, P ;
GRASSO, A ;
GUARALDO, C ;
IAZZI, F ;
LAI, A ;
LANARO, A ;
RIZZINI, EL ;
LOMBARDI, M ;
LUCHERINI, V ;
MAGGIORA, A ;
MANEVA, G ;
MARCELLO, S ;
MARCONI, U ;
MARGAGLIOTTI, G ;
MARON, G ;
MASONI, A ;
MASSA, I ;
MINETTI, B .
PHYSICS LETTERS B, 1994, 329 (2-3) :407-412
[2]   MEASUREMENT OF THE SPIN-DEPENDENT STRUCTURE-FUNCTION G1(X) OF THE DEUTERON [J].
ADEVA, B ;
AHMAD, S ;
ARVIDSON, A ;
BADELEK, B ;
BALLINTIJN, MK ;
BARDIN, G ;
BAUM, G ;
BERGLUND, P ;
BETEV, L ;
BIRD, IG ;
BIRSA, R ;
BJORKHOLM, P ;
BONNER, BE ;
DEBOTTON, N ;
BOUTEMEUR, M ;
BRADAMANTE, F ;
BRESSAN, A ;
BRULL, A ;
BUCHANAN, J ;
BULTMANN, S ;
BURTIN, E ;
CAVATA, C ;
CHEN, JP ;
CLEMENT, J ;
CLOCCHIATTI, M ;
CORCORAN, MD ;
CRABB, D ;
CRANSHAW, J ;
CUHADAR, T ;
DALLATORRE, S ;
VANDANTZIG, R ;
DAY, D ;
DHAWAN, S ;
DULYA, C ;
DYRING, A ;
EICHBLATT, S ;
FAIVRE, JC ;
FASCHING, D ;
FEINSTEIN, F ;
FERNANDEZ, C ;
FROIS, B ;
GARABATOS, C ;
GARZON, JA ;
GATIGNON, L ;
GAUSSIRAN, T ;
GIORGI, M ;
VONGOELER, E ;
GOLOUTVIN, IA ;
GOMEZ, A ;
GRACIA, G .
PHYSICS LETTERS B, 1993, 302 (04) :533-539
[3]   THE PROTON MATRIX ELEMENT OF THE TOPOLOGICAL CHARGE IN QUENCHED QCD [J].
ALLES, B ;
CAMPOSTRINI, M ;
DELDEBBIO, L ;
DIGIACOMO, A ;
PANAGOPOULOS, H ;
VICARI, E .
PHYSICS LETTERS B, 1994, 336 (02) :248-250
[4]  
ALTARELLI G, 1994, CERNTH741594 REP
[5]   AXIAL BARYONIC CHARGE AND THE SPIN CONTENT OF THE NUCLEON - A LATTICE INVESTIGATION [J].
ALTMEYER, R ;
GOCKELER, M ;
HORSLEY, R ;
LAERMANN, E ;
SCHIERHOLZ, G .
PHYSICAL REVIEW D, 1994, 49 (07) :R3087-R3090
[6]   THE SPIN CONTENT OF THE NUCLEON [J].
ALTMEYER, R ;
GOCKELER, M ;
HORSLEY, R ;
LAERMANN, E ;
SCHIERHOLZ, G .
NUCLEAR PHYSICS B, 1993, :483-486
[7]   DETERMINATION OF THE NEUTRON SPIN STRUCTURE-FUNCTION [J].
ANTHONY, PL ;
ARNOLD, RG ;
BAND, HR ;
BOREL, H ;
BOSTED, PE ;
BRETON, V ;
CATES, GD ;
CHUPP, TE ;
DIETRICH, FS ;
DUNNE, J ;
ERBACHER, R ;
FELLBAUM, J ;
FONVIEILLE, H ;
GEARHART, R ;
HOLMES, R ;
HUGHES, EW ;
JOHNSON, JR ;
KAWALL, D ;
KEPPEL, C ;
KUHN, SE ;
LOMBARDNELSEN, RM ;
MARRONCLE, J ;
MARUYAMA, T ;
MEYER, W ;
MEZIANI, ZE ;
MIDDLETON, H ;
MORGENSTERN, J ;
NEWBURY, NR ;
PETRATOS, GG ;
PITTHAN, R ;
PREPOST, R ;
ROBLIN, Y ;
ROCK, SE ;
ROKNI, SH ;
SHAPIRO, G ;
SMITH, T ;
SOUDER, PA ;
SPENGOS, M ;
STALEY, F ;
STUART, LM ;
SZALATA, ZM ;
TERRIEN, Y ;
THOMPSON, AK ;
WHITE, JL ;
WOODS, M ;
XU, J ;
YOUNG, CC ;
ZAPALAC, G .
PHYSICAL REVIEW LETTERS, 1993, 71 (07) :959-962
[8]   AN INVESTIGATION OF THE SPIN STRUCTURE OF THE PROTON IN DEEP INELASTIC-SCATTERING OF POLARIZED MUONS ON POLARIZED PROTONS [J].
ASHMAN, J ;
BADELEK, B ;
BAUM, G ;
BEAUFAYS, J ;
BEE, CP ;
BENCHOUK, C ;
BIRD, IG ;
BROWN, SC ;
CAPUTO, MC ;
CHEUNG, HWK ;
CHIMA, JS ;
CIBOROWSKI, J ;
CLIFFT, R ;
COIGNET, G ;
COMBLEY, F ;
COURT, G ;
DAGOSTINI, G ;
DREES, J ;
DUREN, M ;
DYCE, N ;
EDWARDS, AW ;
EDWARDS, M ;
ERNST, T ;
FERRERO, MI ;
FRANCIS, D ;
GABATHULER, E ;
GAMET, R ;
GIBSON, V ;
GILLIES, J ;
GRAFSTROM, P ;
HAMACHER, K ;
HARRACH, DV ;
HAYMAN, PJ ;
HOLT, JR ;
HUGHES, VW ;
JACHOLKOWSKA, A ;
JONES, T ;
KABUSS, EM ;
KORZEN, B ;
KRUNER, U ;
KULLANDER, S ;
LANDGRAF, U ;
LANSKE, D ;
LETTENSTROM, F ;
LINDQVIST, T ;
LOKEN, J ;
MATTHEWS, M ;
MIZUNO, Y ;
MONIG, K ;
MONTANET, F .
NUCLEAR PHYSICS B, 1989, 328 (01) :1-35
[9]   A MEASUREMENT OF THE SPIN ASYMMETRY AND DETERMINATION OF THE STRUCTURE-FUNCTION G1 IN DEEP INELASTIC MUON PROTON-SCATTERING [J].
ASHMAN, J ;
BADELEK, B ;
BAUM, G ;
BEAUFAYS, J ;
BEE, CP ;
BENCHOUK, C ;
BIRD, IG ;
BROWN, SC ;
CAPUTO, MC ;
CHEUNG, HWK ;
CHIMA, J ;
CIBOROWSKI, J ;
CLIFFT, RW ;
COIGNET, G ;
COMBLEY, F ;
COURT, G ;
DAGOSTINI, G ;
DREES, J ;
DUREN, M ;
DYCE, N ;
EDWARDS, AW ;
EDWARDS, M ;
ERNST, T ;
FERRERO, MI ;
FRANCIS, D ;
GABATHULER, E ;
GAJEWSKI, J ;
GAMET, R ;
GIBSON, V ;
GILLIES, J ;
GRAFSTROM, P ;
HAMACHER, K ;
VONHARRACH, D ;
HAYMAN, P ;
HOLT, JR ;
HUGHES, VW ;
JACHOLKOWSKA, A ;
JONES, T ;
KABUSS, EM ;
KORZEN, B ;
KRUNER, U ;
KULLANDER, S ;
LANDGRAF, U ;
LANSKE, D ;
LETTENSTROM, F ;
LINDQVIST, T ;
LOKEN, J ;
MATTHEWS, M ;
MIZUNO, Y ;
MONIG, K .
PHYSICS LETTERS B, 1988, 206 (02) :364-370
[10]   NEW MEASUREMENT OF DEEP-INELASTIC E-P ASYMMETRIES [J].
BAUM, G ;
BERGSTROM, MR ;
BOLTON, PR ;
CLENDENIN, JE ;
DEBOTTON, NR ;
DHAWAN, SK ;
GUO, YN ;
HARSH, VR ;
HUGHES, VW ;
KONDO, K ;
LUBELL, MS ;
MAO, ZL ;
MILLER, RH ;
MIYASHITA, S ;
MORIMOTO, K ;
MOSER, UF ;
NAKANO, I ;
OPPENHEIM, RF ;
PALMER, DA ;
PANDA, L ;
RAITH, W ;
SASAO, N ;
SCHULER, KP ;
SEELY, ML ;
SOUDER, PA ;
STLORANT, SJ ;
TAKIKAWA, K ;
WERLEN, M .
PHYSICAL REVIEW LETTERS, 1983, 51 (13) :1135-1138