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SPIN STRUCTURE OF THE PROTON FROM POLARIZED INCLUSIVE DEEP-INELASTIC MUON-PROTON SCATTERING

Authors

ADAMS D ADEVA B ARIK E 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 BRAVAR A BRESSAN A BULTMANN S BURTIN E CAVATA C CRABB D CRANSHAW J CUHADAR T DALLATORRE S VANDANTZIG R DERRO B DESHPANDE A DHAWAN S DULYA C DYRING A EICHBLATT S FAIVRE JC FASCHING D FEINSTEIN F FERNANDEZ C FROIS B GALLAS A GARZON JA GAUSSIRAN T GIORGI M VONGOELER E GRACIA G DEGROOT N PERDEKAMP MG GULMEZ E VONHARRACH D HASEGAWA T HAUTLE P HAYASHI N HEUSCH CA HORIKAWA N HUGHES VW IGO G ISHIMOTO S IWATA T KABUSS EM KAREV A KESSLER HJ KETEL TJ KISHI A KISSELEV Y KLOSTERMANN L KRAMER D KRIVOKHIJINE V KROGER W KUREK K KYYNARAINEN J LAMANNA M LANDGRAF U LAYDA T LEGOFF JM LEHAR F DELESQUEN A LICHTENSTADT J LINDQVIST T LITMAATH M LOWE M MAGNON A MALLOT GK MARIE F MARTIN A MARTINO J MATSUDA T MAYES B MCCARTHY JS MEDVED K VANMIDDELKOOP G MILLER D MORI K MOROMISATO J NAGAITSEV A NASSALSKI J NAUMANN L NIINIKOSKI TO OBERSKI JEJ OGAWA A OZBEN C PARKS DP PENZO A PERROTKUNNE F PESHEKHONOV D PIEGAIA R PINSKY L PLATCHKOV S PLO M POSE D POSTMA H PRETZ J PUSSIEUX T PYRLIK J REYHANCAN I RIJLLART A ROBERTS JB ROCK S RODRIGUEZ M RONDIO E ROSADO A SABO I SABORIDO J SANDACZ A SAVIN I SCHIAVON P SCHULER KP SEGEL R SEITZ R SEMERTZIDIS Y SEVER F SHANAHAN P SICHTERMANN EP SIMEONI F SMIRNOV GI STAUDE A STEINMETZ A STIEGLER U STUHRMANN H SZLEPER M TEICHERT KM TESSAROTTO F TLACZALA W TRENTALANGE S UNEL G VELASCO M VOGT J VOSS R WEINSTEIN R WHITTEN C WINDMOLDERS R WILLUMEIT R WISLICKI W WITZMANN A ZANETTI AM ZAREMBA K ZHAO J

Citation

D. Adams et al., SPIN STRUCTURE OF THE PROTON FROM POLARIZED INCLUSIVE DEEP-INELASTIC MUON-PROTON SCATTERING, Physical review. D. Particles and fields, 56(9), 1997, pp. 5330-5358

Citations number

171

Categorie Soggetti

Physics, Particles & Fields

Journal title

Physical review. D. Particles and fields → ACNP

ISSN journal

05562821

Volume

Issue

Year of publication

1997

Pages

5330 - 5358

Database

ISI

SICI code

0556-2821(1997)56:9<5330:SSOTPF>2.0.ZU;2-Y

Abstract

We have measured the spin-dependent structure function g(1)(p) in incl usive deep-inelastic scattering of polarized muons off polarized proto ns, in the kinematic range 0.003<x<0.7 and I GeV2<Q(2)<60 GeV2. A next -to-leading order QCD analysis is used to evolve the measured g(1)(p)( x,Q(2)) to a fixed Q(0)(2). The first moment of g(1)(p) at Q(0)(2)=10 GeV2 is Gamma=0.136+/-0.013 (stat) +/-0.009 (syst) +/-0.005 (evol). Th is result is below the prediction of the Ellis-Jaffe sum rule by more than two standard deviations. The singlet axial charge a(0) is found t o be 0.28+/-0.16. Ln the Adler-Bardeen factorization scheme, Delta g s imilar or equal to 2 is required to bring Delta Sigma in agreement wit h the quark-parton model. A combined analysis of all available proton, deuteron, and He-3 data confirms the Bjorken sum rule.