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Exclusive electroproduction of J/psi mesons at HERA

Title
Exclusive electroproduction of J/psi mesons at HERA
Authors
Chekanov, SDerrick, ALoizides, JHMagill, SMiglioranzi, SMusgrave, BRepond, JYoshida, RMattingly, MCKPavel, NAntonioli, PBari, GBasile, MBellagamba, LBoscherini, DBruni, ABruni, GRomeo, GCCifarelli, LClindolo, FContin, ACorradi, MDe Pasquale, SGiusti, PIacobucci, GMargotti, AMontanari, ANania, RPalmonari, FPesci, ARinaldi, LSartorelli, GZichichi, AAghuzumtsyan, GBartsch, DBrock, IGoers, SHartmann, HHilger, EIrrgang, PJakob, HPKind, OMeyer, UPaul, ERautenberg, JRenner, RStifutkin, ATandler, JVoss, KCWang, MBailey, DSBrook, NHCole, JEHeath, GPNamsoo, TRobins, SWing, MCapua, MMastroberardino, ASchioppa, MSusinno, GKim, JYLim, ITMa, KJPac, MYHelbich, MNing, YRen, ZSchmidke, WBSciulli, FChwastowski, JEskreys, AFigiel, JGalas, AOlkiewicz, KStopa, PZawiejski, LAdamczyk, LBold, TGrabowska-Bold, IKisielewska, DKowal, AMKowal, MLukasik, JPrzybycien, MSuszycki, LSzuba, DSzuba, JKotanski, ASlominski, WAdler, VBehrens, UBloch, IBorras, KChiochia, VDannheim, DDrews, GFourletova, JFricke, UGeiser, AGottlicher, PGutsche, OHaas, THain, WHillert, SHorn, CKahle, BKotz, UKowalski, HKramberger, GLabes, HLelas, DLim, HLohr, BMankel, RMelzer-Pellmann, IANguyen, CNNotz, DNuncio-Quiroz, AEPolini, ARaval, ARurua, LSchneekloth, UStosslein, UWolf, GYoungman, CZeuner, WSchlenstedt, SBarbagli, GGallo, EGenta, CPelfer, PGBamberger, ABenen, AKarstens, FDobur, DVlasov, NNBell, MBussey, PJDoyle, ATFerrando, JHamilton, JHanlon, SSaxon, DHSkillicorn, IOGialas, ICarli, TGosau, THolm, UKrumnack, NLohrmann, EMilite, MSalehi, HSchleper, PSchorner-Sadenius, TStonjek, SWichmann, KWick, KZiegler, ACollins-Tooth, CFoudas, CGoncalo, RLong, KRTapper, ADCloth, RFilges, DKataoka, PNagano, KTokushuku, KYamada, SYamazaki, YBarakbaev, ABoos, EGPokrovskiy, NSZhautykov, BOSon, DPiotrzkowski, KBarreiro, FGlasman, CGonzalez, OLabarga, Ldel Peso, JTassi, ETerron, JZambrana, MBarbi, MCorriveau, FGliga, SLainesse, JPadhi, SStairs, DGWalsh, RTsurugai, TAntonov, ADanilov, PDolgoshein, BAGladkov, DSosnovtsev, VSuchkov, SDementiev, RKErmolov, RKatkov, IIKhein, LAKorzhavina, IAKuzmin, VALevchenko, BBLukina, OYProskuryakov, ASShcheglova, LMZotkin, SAAbt, IButtner, CCaldwell, ALiu, XSutiak, JCoppola, NGrijpink, SKoffeman, EKooijman, PMaddox, EPellegrino, ASchagen, STiecke, HVazquez, MWiggers, Lde Wolf, EBrummer, NBylsma, BDurkin, LSLing, TYCooper-Sarkar, AMCottrell, ADevenish, RCEFoster, BGrzelak, GGwenlan, CKohno, TPatel, SStraub, PBWalczak, RBertolin, ABrugnera, RCarlin, RDal Corso, FDusini, SGarfagnini, ALimentani, SLonghin, AParenti, APosocco, MStanco, LTurcato, MHeaphy, EAMetlica, FOh, BYWhitmore, JJIga, YD'Agostini, GMarini, GNigro, ACormack, CHart, JCMcCubbin, NAHeusch, CPark, IHAbramowicz, HGabareen, AKananov, SKreisel, ALevy, AKuze, MFusayasu, TKagawa, STawara, TYamashita, THamatsu, RHirose, TInuzuka, MKaji, HKitamura, SMatsuzawa, KCosta, MFerrero, MIMonaco, VSacchi, RSolano, AArneodo, MRuspa, MKoop, TMartin, JFMirea, AButterworth, JMHall-Wilton, RJones, TWLightwood, MSSutton, MRTargett-Adams, CCiborowski, JCiesielski, RLuzniak, PNowak, RJPawlak, JMSztuk, JTymieniecka, TUkleja, AUkleja, JZarnecki, AFAdamus, MPlucinski, PEisenberg, YHochman, DKarshon, URiveline, MEverett, AGladilin, LKKcira, DLammers, SLi, LReeder, DDRosin, MRyan, PSavin, AASmith, WHDhawan, SBhadra, SCatterall, CDFourletov, SHartner, GMenary, SSoares, MStandage, JZEUS Collaboration
Ewha Authors
박일흥
Issue Date
2004
Journal Title
NUCLEAR PHYSICS B
ISSN
0550-3213JCR Link
Citation
vol. 695, no. 1-2, pp. 3 - 37
Publisher
ELSEVIER SCIENCE BV
Indexed
SCI; SCIE; SCOPUS WOS
Abstract
The exclusive electroproduction of J/psi mesons, ep --> epJ/psi, has been studied with the ZEUS detector at HERA for virtualities of the exchanged photon in the ranges 0.15 < Q(2) < 0.8 GeV2 and 2 < Q(2) < 100 GeV2 using integrated luminosities of 69 and 83 pb(-1), respectively. The photonproton centre-of-mass energy was in the range 30 < W < 220 GeV and the squared four-momentum transfer at the proton vertex \t\ < 1 GeV2. The cross sections and decay angular distributions are presented as functions of Q(2), W and t. The effective parameters of the pomeron trajectory are in agreement with those found in J/psi photoproduction. The spin-density matrix elements, calculated from the decay angular distributions, are consistent with the hypothesis of s-channel helicity conservation. The ratio of the longitudinal to transverse cross sections, sigma(L)/sigma(T), grows with Q(2), whilst no dependence on W or t is observed. The results are in agreement with perturbative QCD calculations and exhibit a strong sensitivity to the gluon distribution in the proton. (C) 2004 Elsevier B.V. All rights reserved.
DOI
10.1016/j.nuclphysb.2004.06.034
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자연과학대학 > 물리학전공 > Journal papers
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