Measurement of dijet cross sections in photoproduction at HERA

被引：35

作者：

Adloff, C ^{[1
]}

Andreev, V

Andrieu, B

Anthonis, T

Arkadov, V

Astvatsatourov, A

Babaev, A

Bähr, J

Baranov, P

Barrelet, E

Bartel, W

Becker, J

Beglarian, A

Behnke, O

Beier, C

Belousov, A

Berger, C

Berndt, T

Bizot, JC

Bhöme, J

Boudry, V

Braunschweig, W

Brisson, V

Bröker, HB

Brown, DP

Brückner, W

Bruncko, D

Bürger, J

Büsser, FW

Bunyatyan, A

Burrage, A

Buschhorn, G

Bystritskaya, L

Campbell, AJ

Caron, S

Cassol-Brunner, F

Clarke, D

Collard, C

Contreras, JG

Coppens, YR

Coughlan, JA

Cousinou, MC

Cox, BE

Cozzika, G

Cvach, J

Dainton, JB

Dau, WD

Daum, K

Davidsson, M

Delcourt, B

机构：

[1] Berg Univ Wuppertal, Fachbereich Phys, Wuppertal, Germany

[2] Rhein Westfal TH Aachen, Inst Phys 1, D-5100 Aachen, Germany

[3] Rhein Westfal TH Aachen, Inst Phys 3, D-5100 Aachen, Germany

[4] Univ Birmingham, Sch Phys & Space Res, Birmingham B15 2TT, W Midlands, England

[5] VUB, ULB, Inter Univ Inst High Energies, Brussels, Belgium

[6] UIA, Antwerp, Belgium

[7] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England

[8] Inst Nucl Phys, Krakow, Poland

[9] Univ Dortmund, Inst Phys, D-4600 Dortmund, Germany

[10] Joint Inst Nucl Res, Dubna, Russia

[11] CE Saclay, CEA, DAPNIA, DSM, Gif Sur Yvette, France

[12] DESY, D-2000 Hamburg, Germany

[13] Univ Hamburg, Inst Expt Phys, Hamburg, Germany

[14] Max Planck Inst Kernphys, D-69117 Heidelberg, Germany

[15] Heidelberg Univ, Inst Phys, D-6900 Heidelberg, Germany

[16] Heidelberg Univ, Kirchhoff Inst Phys, Heidelberg, Germany

[17] Univ Kiel, Inst Expt & Angew Phys, Kiel, Germany

[18] Slovak Acad Sci, Inst Expt Phys, Kosice 04353, Slovakia

[19] Univ Lancaster, Sch Phys & Chem, Lancaster, England

[20] Univ Liverpool, Dept Phys, Liverpool L69 3BX, Merseyside, England

[21] Queen Mary Univ London, London E1 4NS, England

[22] Lund Univ, Dept Phys, Lund, Sweden

[23] Univ Manchester, Dept Phys, Manchester M13 9PL, Lancs, England

[24] Univ Mediterranee, CNRS, IN2P3, CPPM, Marseille, France

[25] Inst Theoret & Expt Phys, Moscow 117259, Russia

[26] PN Lebedev Phys Inst, Moscow 117924, Russia

[27] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany

[28] Univ Paris 11, CNRS, IN2P3, LAL, Orsay, France

[29] Ecole Polytech, CNRS, IN2P3, LPNHE, Palaiseau, France

[30] Univ Paris 06, CNRS, IN2P3, LPNHE, Paris, France

[31] Univ Paris 07, CNRS, IN2P3, LPNHE, Paris, France

[32] Acad Sci Czech Republic, Inst Phys, Prague, Czech Republic

[33] Charles Univ Prague, Fac Math & Phys, Prague, Czech Republic

[34] Univ Roma Tor Vergata, Dipartimento Fis, I-00173 Rome, Italy

[35] Ist Nazl Fis Nucl Roma 3, Rome, Italy

[36] Paul Scherrer Inst, Villigen, Switzerland

[37] Yerevan Phys Inst, Yerevan 375036, Armenia

[38] DESY, Zeuthen, Germany

[39] Swiss Fed Inst Technol, Inst Teilchenphys, Zurich, Switzerland

[40] Univ Zurich, Inst Phys, Zurich, Switzerland

[41] Natl Tech Univ Athens, Dept Phys, GR-15773 Athens, Greece

[42] Berg Univ Wuppertal, Rechenzentrum, Wuppertal, Germany

[43] Univ Karlsruhe, Inst Expt Kernphys, D-7500 Karlsruhe, Germany

[44] CINVESTAV, Dept Fis Ap, Merida, Yucatan, Mexico

[45] Safarik Univ, Kosice, Slovakia

[46] CERN, Geneva, Switzerland

[47] CINVESTAV, Dept Fis, Mexico City 14000, DF, Mexico

来源：

EUROPEAN PHYSICAL JOURNAL C | 2002年 / 25卷 / 01期

关键词：

D O I：

10.1007/s10052-002-1004-0

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：

Dijet cross sections as functions of several jet observables are measured in photoproduction using the HI detector at HERA. The data sample comprises e(+)p data with an integrated luminosity of 319 pb(-1). Jets are selected using the inclusive k(perpendicular to) algorithm with a minimum transverse energy of 25 GeV for the leading jet. The phase space covers longitudinal proton momentum fraction x(p) and photon longitudinal momentum fraction x(gamma) in the ranges 0.05 < x(p) < 0.6 and 0.1 < x(gamma) < 1. The predict ions of next-to-leading order perturbative QCD, including recent photon and proton parton densities, are found to be compatible with the data in a wide kinematical range.

引用

页码：13 / 23

页数：11

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