Measurement of the proton spin structure function g1p with a pure hydrogen target

A Airapetian,M Ferstl,K Fiedler,M Sutter,M.-A Funk,V Shutov,M Beckmann,M Kolstein,C Scarlett,A Mateos,E De Sanctis,M Düren,D Hasch,U Stößlein,S Bernreuther,P Geiger,S Brauksiepe,F Kümmell,V Gharibyan,V Giordjian,V Papavassiliou,A Avetissian,G Rakness,S Frabetti,M Henoch,A Borissov,R Hertenberger,H Schmitt,W Lorenzon,P Carter,S Taroian,P Di Nezza,N Meyners,W Hoprich,H Marukyan,W.-D Nowak,R Van De Vyver,K Sinram,H Fischer,D De Schepper,H Kolster,A Gute,K Königsmann,K Martens,E Steffens,J Blouw,F Menden,H Avakian,A Metz,K Woller,M Ruh,W Korsch,A Golendukhin,A Reali,A Dvoredsky,E Volk,J Visser,H Böttcher,J Ouyang,H Gao,F Meißner,A Simon,M Guidal,M Tytgat,W Haeberli,W Brückner,C Baumgarten,A Terkulov,G Elbakian,H Ihssen,G Graw,E Kinney,A Fantoni,R Kaiser,C Simani,D Fick,A Schwind,P.K.A De Witt Huberts,R Milner,S Rudnitsky,H Zohrabian,M Mcandrew,B Tipton,Y Gärber,A Jgoun,B Bains,T Wise,V Muccifora,J Brack,M Amarian,G Gavrilov,O Mikloukho,W Lachnit,K Shibatani,F Garibaldi,H Roloff,Y Holler,L.G Greeniaus,D Ryckbosch,H Tallini,B Braun,R Redwine,G Schnell,F Masoli,G Van Der Steenhoven,J Stewart,P Rossi,A Kisselev,K Mcilhany,V Kozlov,W Wander,M Iodice,P Chumney,E Cisbani,R Avakian,M Kurisuno,A Brüll,Y Naryshkin,E Devitsin,M Spengos,P Kitching,O Grebeniouk,N Bianchi,A Izotov,A Fechtchenko,J Stenger,F Neunreither,S Potashov,Y Sakemi,E Nappi,I Savin,J Franz,G.R Court,S Frullani,Igor Akushevich ,Klaus Rith ,S Belostotski ,Alan M Nathan ,C Großhauser ,J Van Den Brand ,Satoshi Yoneyama ,E C Aschenauer ,B Owen ,G S Kyle ,Andrea Belz ,James H Ely ,H Bulten ,C A Miller ,M G Vincter ,Friedrich Schmidt ,G P Capitani ,J Anthony Seibert ,A R Reolon ,J W Martin ,T Benisch ,А Нагайцев ,K P Schüler ,G M Urciuoli ,S Brons ,J J Van Hunen ,S E Williamson ,В А Коротков ,H E Jackson ,M C Vetterli ,D H Potterveld ,Р Де Лео ,R D Mckeown ,N Makins ,S F Pate ,T G O’neill ,B D Fox ,P W Green ,Taeho Shin ,R.a Ristinen ,Valeri Valentinovitch Mitsyn ,V G Krivokhijine ,Hisao Kobayashi ,Н Акопов ,N Gagunashvili ,Norbert Koch ,T A Shibata ,J O Hansen ,P Dalpiaz ,S I Manaenkov ,L Kramer ,R J Holt ,F H Heinsius ,M A Miller ,B W Filippone ,Pietro Slavich

doi:10.1016/s0370-2693(98)01341-0

Measurement of the proton spin structure function g1p with a pure hydrogen target

A Airapetian, M Ferstl + Show 188 more

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https://doi.org/10.1016/s0370-2693(98)01341-0

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Journal: Physics Letters B	Publication Date: Dec 1, 1998
Citations: 211

Affiliation: University of Erlangen-Nuremberg, Massachusetts Institute of Technology, Max Planck Society, University of Freiburg, New Mexico State University, University of Ferrara, Ghent University, University of Alberta, TRIUMF, Ludwig-Maximilians-Universität München, California Institute of Technology, University of Wisconsin–Madison, Philipps University of Marburg, University of Michigan–Ann Arbor, University of Liverpool, University of Illinois Urbana-Champaign, Tokyo Institute of Technology, Joint Institute for Nuclear Research

#Structure Function G1p #Pure Hydrogen Target + Show 8 more

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Abstract

A measurement of the proton spin structure function g 1 p( x, Q 2) in deep-inelastic scattering is presented. The data were taken with the 27.6 GeV longitudinally polarised positron beam at HERA incident on a longitudinally polarised pure hydrogen gas target internal to the storage ring. The kinematic range is 0.021< x<0.85 and 0.8 GeV 2< Q 2<20 GeV 2. The integral ∫ 0.021 0.85 g 1 p (x) dx evaluated at Q 0 2 of 2.5 GeV 2 is 0.122±0.003(stat.)±0.010(syst.).

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