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 a-re presented as functions of jet transverse energy (E(T.jet)(B)), jet pseudorapidity and Q(2), for jets with E(T.jet)(B) > 8 GeV. Next-to-leading-order QCD calculations agree well with the measurements both at high Q(2) and high E(T.jet)(B). The value of alpha(s) (M(Z)), determined from an analysis of dsigma/dQ(2) for Q(2) > GeV(2), is alphas (M(Z)) = 0.1212 +/- 0.0017(stat.)(-0.0031)(+0.0023)(syst.)(-0.0027)(+0.0028)(th.). (C) 2002 Elsevier Science B.V. All rights reserved.

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

CIRIO, Roberto;COSTA, Marco;MONACO, Vincenzo;PERONI, Cristiana;SACCHI, Roberto;SOLANO, Ada Maria;
2002-01-01

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 a-re presented as functions of jet transverse energy (E(T.jet)(B)), jet pseudorapidity and Q(2), for jets with E(T.jet)(B) > 8 GeV. Next-to-leading-order QCD calculations agree well with the measurements both at high Q(2) and high E(T.jet)(B). The value of alpha(s) (M(Z)), determined from an analysis of dsigma/dQ(2) for Q(2) > GeV(2), is alphas (M(Z)) = 0.1212 +/- 0.0017(stat.)(-0.0031)(+0.0023)(syst.)(-0.0027)(+0.0028)(th.). (C) 2002 Elsevier Science B.V. All rights reserved.
2002
547
164
180
http://dx.doi.org/10.1016/S0370-2693(02)02763-6
ZEUS; DEUTERON STRUCTURE FUNCTIONS; DYNAMICAL PARTON DISTRIBUTIONS; HIGH STATISTICS MEASUREMENT; LEPTON-NUCLEON SCATTERING; CENTRAL TRACKING DETECTOR; STRONG-COUPLING CONSTANT; ZEUS BARREL CALORIMETER; F-2 STRUCTURE-FUNCTION; MONTE-CARLO GENERATOR; COLOR DIPOLE MODEL
S. Chekanov;D. Krakauer;S. Magill;B. Musgrave;J. Repond;R. Yoshida;M. C. K.;P. Antonioli;G. Bari;M. Basile;L. Bellagamba;D. Boscherini;A. ...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/109320
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