Measurement of inclusive and dijet D∗ meson cross sections in photoproduction at HERA

被引：0
|
作者：
F. D. Aaron
C. Alexa
V. Andreev
S. Backovic
A. Baghdasaryan
S. Baghdasaryan
E. Barrelet
W. Bartel
K. Begzsuren
A. Belousov
P. Belov
J. C. Bizot
M.-O. Boenig
V. Boudry
I. Bozovic-Jelisavcic
J. Bracinik
G. Brandt
M. Brinkmann
V. Brisson
D. Britzger
D. Bruncko
A. Bunyatyan
G. Buschhorn
L. Bystritskaya
A. J. Campbell
K. B. Cantun Avila
F. Ceccopieri
K. Cerny
V. Cerny
V. Chekelian
J. G. Contreras
J. A. Coughlan
J. Cvach
J. B. Dainton
K. Daum
B. Delcourt
J. Delvax
E. A. De Wolf
C. Diaconu
M. Dobre
V. Dodonov
A. Dossanov
A. Dubak
G. Eckerlin
S. Egli
A. Eliseev
E. Elsen
L. Favart
A. Fedotov
R. Felst
机构：
[1] I. Physikalisches Institut der RWTH,Vinca Institute of Nuclear Sciences
[2] University of Belgrade,School of Physics and Astronomy
[3] University of Birmingham,Rutherford Appleton Laboratory
[4] Inter-University Institute for High Energies ULB-VUB,Institut für Physik
[5] Universiteit Antwerpen,CEA, DSM/Irfu
[6] National Institute for Physics and Nuclear Engineering (NIPNE),Institut für Experimentalphysik
[7] Chilton,Physikalisches Institut
[8] Institute for Nuclear Physics,Kirchhoff
[9] TU Dortmund,Institut für Physik
[10] Joint Institute for Nuclear Research,Institute of Experimental Physics
[11] CE-Saclay,Department of Physics
[12] DESY,Department of Physics
[13] Universität Hamburg,School of Physics and Astronomy, Queen Mary
[14] Max-Planck-Institut für Kernphysik,Physics Department
[15] Universität Heidelberg,CPPM, Aix
[16] Universität Heidelberg,Marseille Univ
[17] Slovak Academy of Sciences,Departamento de Fisica Aplicada
[18] University of Lancaster,Departamento de Fisica
[19] University of Liverpool,LAL, Université Paris
[20] University of London,Sud
[21] University of Lund,LLR, Ecole Polytechnique
[22] CNRS/IN2P3,LPNHE, Université Pierre et Marie Curie Paris 6, Université Denis Diderot Paris 7
[23] CINVESTAV,Faculty of Science
[24] CINVESTAV IPN,Institute of Physics
[25] Institute for Theoretical and Experimental Physics,Faculty of Mathematics and Physics
[26] Lebedev Physical Institute,Dipartimento di Fisica
[27] Max-Planck-Institut für Physik,Fachbereich C
[28] CNRS/IN2P3,Institut für Teilchenphysik
[29] CNRS/IN2P3,undefined
[30] CNRS/IN2P3,undefined
[31] University of Montenegro,undefined
[32] Academy of Sciences of the Czech Republic,undefined
[33] Charles University,undefined
[34] Università di Roma Tre and INFN Roma 3,undefined
[35] Institute for Nuclear Research and Nuclear Energy,undefined
[36] Institute of Physics and Technology of the Mongolian Academy of Sciences,undefined
[37] Paul Scherrer Institut,undefined
[38] Universität Wuppertal,undefined
[39] Yerevan Physics Institute,undefined
[40] DESY,undefined
[41] ETH,undefined
[42] Physik-Institut der Universität Zürich,undefined
来源：
The European Physical Journal C | 2012年 / 72卷
关键词：
Transverse Momentum; Monte Carlo; Differential Cross Section; Parton Shower; Charm Quark;
D O I：
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摘要：
The inclusive photoproduction of D∗ mesons and of D∗-tagged dijets is investigated with the H1 detector at the ep collider HERA. The kinematic region covers small photon virtualities Q2<2 GeV2 and photon–proton centre-of-mass energies of 100<Wγp<285 GeV. Inclusive D∗ meson differential cross sections are measured for central rapidities |η(D∗)|<1.5 and transverse momenta pT(D∗)>1.8 GeV. The heavy quark production process is further investigated in events with at least two jets with transverse momentum pT(jet)>3.5 GeV each, one containing the D∗ meson. Differential cross sections for D∗-tagged dijet production and for correlations between the jets are measured in the range |η(D∗)|<1.5 and pT(D∗)>2.1 GeV. The results are compared with predictions from Monte Carlo simulations and next-to-leading order perturbative QCD calculations.
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