Inclusive jet cross sections and dijet correlations in D*± photoproduction at HERA

被引:29
|
作者
Chekanov, S
Derrick, M
Magill, S
Miglioranzi, S
Musgrave, B
Repond, J
Yoshida, R
Mattingly, MCK
Pavel, N
Molina, AGY
Antonioli, P
Bari, G
Basile, M
Bellagamba, L
Boscherini, D
Bruni, A
Bruni, G
Romeo, GC
Cifarelli, L
Cindolo, F
Contin, A
Corradi, M
De Pasquale, S
Giusti, P
Iacobucci, G
Margotti, A
Montanari, A
Nania, R
Palmonari, F
Pesci, A
Polini, A
Rinaldi, L
Sartorelli, G
Zichichi, A
Aghuzumtsyan, G
Bartsch, D
Brock, I
Goers, S
Hartmann, H
Hilger, E
Irrgang, P
Jakob, HP
Kind, OM
Meyer, U
Paul, E
Rautenberg, J
Renner, R
Wang, M
Wlasenko, M
Bailey, DS
机构
[1] Argonne Natl Lab, Argonne, IL 60439 USA
[2] Andrews Univ, Berrien Springs, MI 49104 USA
[3] Humboldt Univ, Inst Phys, Berlin, Germany
[4] Univ Bologna, Bologna, Italy
[5] Ist Nazl Fis Nucl, I-40126 Bologna, Italy
[6] Univ Bonn, Inst Phys, D-5300 Bonn, Germany
[7] Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England
[8] Univ Calabria, Dept Phys, I-87036 Cosenza, Italy
[9] Ist Nazl Fis Nucl, Cosenza, Italy
[10] Chonnam Natl Univ, Kwangju 500757, South Korea
[11] Columbia Univ, Nevis Labs, Irvington, NY 10027 USA
[12] Polish Acad Sci, Henryk Niewodniczanski Inst Nucl Phys, Krakow, Poland
[13] AGH Univ Sci & Technol, Fac Phys & Appl Comp Sci, Krakow, Poland
[14] Jagiellonian Univ, Dept Phys, Krakow, Poland
[15] DESY, D-2000 Hamburg, Germany
[16] Univ Florence, Florence, Italy
[17] Ist Nazl Fis Nucl, I-50125 Florence, Italy
[18] Univ Freiburg, Fak Phys, Freiburg, Germany
[19] Univ Glasgow, Dept Phys & Astron, Glasgow, Lanark, Scotland
[20] Univ Aegean, Dept Engn Management & Finance, Mitilini, Greece
[21] Univ Hamburg, Inst Exp Phys, Hamburg, Germany
[22] Univ London Imperial Coll Sci Technol & Med, High Energy Nucl Phys Grp, London, England
[23] Natl Lab High Energy Phys, KEK, Tsukuba, Ibaraki 305, Japan
[24] Minist Educ & Sci Kazakhstan, Inst Phys & Technol, Alma Ata, Kazakhstan
[25] Kyungpook Natl Univ, Ctr High Energy Phys, Taegu 702701, South Korea
[26] Catholic Univ Louvain, Inst Nucl Phys, B-3000 Louvain, Belgium
[27] Univ Autonoma Madrid, Dept Fis Teor, Madrid, Spain
[28] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada
[29] Meiji Gakuin Univ, Fac Gen Educ, Yokohama, Kanagawa, Japan
[30] Moscow Engn Phys Inst, Moscow 115409, Russia
[31] Moscow MV Lomonosov State Univ, Inst Nucl Phys, Moscow, Russia
[32] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany
[33] NIKHEF, Amsterdam, Netherlands
[34] Univ Amsterdam, Amsterdam, Netherlands
[35] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA
[36] Univ Oxford, Dept Phys, Oxford, England
[37] Univ Padua, Dipartimento Fis, Padua, Italy
[38] Ist Nazl Fis Nucl, Padua, Italy
[39] Penn State Univ, Dept Phys, University Pk, PA 16802 USA
[40] Polytech Univ, Sagamihara, Kanagawa, Japan
[41] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy
[42] Ist Nazl Fis Nucl, Rome, Italy
[43] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England
[44] Tel Aviv Univ, Raymond & Beverly Sackler Fac Exact Sci, Sch Phys, IL-69978 Tel Aviv, Israel
[45] Tokyo Inst Technol, Dept Phys, Tokyo 152, Japan
[46] Univ Tokyo, Dept Phys, Tokyo 113, Japan
[47] Tokyo Metropolitan Univ, Dept Phys, Tokyo 158, Japan
[48] Univ Toronto, Turin, Italy
[49] Ist Nazl Fis Nucl, I-10125 Turin, Italy
[50] Univ Piemonte Orientale, Novara, Italy
基金
以色列科学基金会;
关键词
D O I
10.1016/j.nuclphysb.2005.09.021
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
Inclusive jet cross sections in photoproduction for events containing a D* meson have been measured with the ZEUS detector at HERA using an integrated luminosity of 78.6 pb(-1). The events were required to have a virtuality of the incoming photon, Q(2), of less than 1 GeV2, and a photon-proton centre-of-mass energy in the range 130 < W-yp < 280 GeV. The measurements are compared with next-to-leading-order (NLC) QCD calculations. Good agreement is found with the NLO calculations over most of the measured kinematic region. Requiring a second jet in the event allowed a more detailed comparison with QCD calculations. The measured dijet cross sections are also compared to Monte Carlo (MC) models which incorporate leading-order matrix elements followed by parton showers and hadronisation. The NLO QCD predictions are in general agreement with the data although differences have been isolated to regions where contributions from higher orders are expected to be significant. The MC models give a better description than the NLO predictions of the shape of the measured cross sections. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码:492 / 525
页数:34
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