Inclusive jet cross sections in the Breit frame in neutral current deep inelastic scattering at HERA and determination of α s

S. Chekanov, D. Krakauer, S. Magill, B. Musgrave, J. Repond, R. Yoshida, M. C.K. Mattingly, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, G. Cara Romeo, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, S. De PasqualeP. Giusti, G. Iacobucci, A. Margotti, R. Nania, F. Palmonari, A. Pesci, G. Sartorelli, A. Zichichi, G. Aghuzumtsyan, D. Bartsch, I. Brock, J. Crittenden, S. Goers, H. Hartmann, E. Hilger, P. Irrgang, H. P. Jakob, A. Kappes, U. F. Katz, R. Kerger, O. Kind, E. Paul, J. Rautenberg, R. Renner, H. Schnurbusch, A. Stifutkin, J. Tandler, K. C. Voss, A. Weber, D. S. Bailey, N. H. Brook, J. E. Cole, B. Foster, G. P. Heath, H. F. Heath, S. Robins, E. Rodrigues, J. Scott, R. J. Tapper, M. Wing, M. Capua, A. Mastroberardino, M. Schioppa, G. Susinno, J. Y. Kim, Y. K. Kim, J. H. Lee, I. T. Lim, M. Y. Pac, A. Caldwell, M. Helbich, X. Liu, B. Mellado, Y. Ning, S. Paganis, Z. Ren, W. B. Schmidke, F. Sciulli, J. Chwastowski, A. Eskreys, J. Figiel, K. Olkiewicz, K. Piotrzkowski, M. B. Przybycień, P. Stopa, L. Zawiejski, L. Adamczyk, T. Bold, I. Grabowska-Bold, D. Kisielewska, A. M. Kowal, M. Kowal, T. Kowalski, M. Przybycień, L. Suszycki, D. Szuba, J. Szuba, A. Kotański

Risultato della ricerca: Contributo su rivistaArticolo in rivistapeer review

Abstract

Inclusive jet differential cross sections have been measured in neutral current deep inelastic e +p scattering for boson virtualities Q 2 > 125 GeV 2. The data were taken using the ZEUS detector at HERA and correspond to an integrated luminosity of 38.6 pb -1. Jets were identified in the Breit frame using the longitudinally invariant k T cluster algorithm. Measurements of differential inclusive jet cross sections are presented as functions of jet transverse energy (E B T.jet), jet pseudorapidity and Q 2, for jets with E B T.jet > 8 GeV. Next-to-leading-order QCD calculations agree well with the measurements both at high Q 2 and high E B T.jet. The value of α s(M z), determined from an analysis of dσ/dQ 2 for Q 2 > 500 GeV 2, is α s(M Z=0.1212±0.0017 (stat.) +0.0023 -0.0031 (syst.) +0.0028 -0.0027(th.).

Lingua originaleInglese
pagine (da-a)164-180
Numero di pagine17
RivistaPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume547
Numero di pubblicazione3-4
DOI
Stato di pubblicazionePubblicato - 7 nov 2002
Pubblicato esternamente

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