Measurement of the inclusive di-jet cross section in photoproduction and determination of an effective parton distribution in the photon

被引：48

作者：

Adloff, C ^{[1
]}

Aid, S

Anderson, M

Andreev, V

Andrieu, B

Arkadov, V

Arndt, C

Ayyaz, I

Babaev, A

Bahr, J

Ban, J

Baranov, P

Barrelet, E

Barschke, R

Bartel, W

Bassler, U

Beck, M

Behrend, HJ

Beier, C

Belousov, A

Berger, C

Bernardi, G

Bertrand-Coremans, G

Beyer, R

Biddulph, P

Bizot, JC

Borras, K

Botterweck, F

Boudry, V

Bourov, S

Braemer, A

Braunschweig, W

Brisson, V

Brown, DP

Bruckner, W

Bruel, P

Bruncko, D

Brune, C

Burger, J

Busser, FW

Buniatian, A

Burke, S

Buschhorn, G

Calvet, D

Campbell, AJ

Carli, T

Charlet, M

Clarke, D

Clerbaux, B

Cocks, S

机构：

[1] Berg Univ Gesamthsch Wuppertal, Fachbereich Phys, D-42097 Wuppertal, Germany

[2] Rhein Westfal TH Aachen, Inst Phys 1, D-52074 Aachen, Germany

[3] Rhein Westfal TH Aachen, Inst Phys 3, D-52074 Aachen, Germany

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

[5] Univ Instelling Antwerp, Inter Univ Inst High Energies, B-2610 Wilrijk, Belgium

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

[7] Inst Nucl Phys, PL-30055 Krakow, Poland

[8] Univ Calif Davis, Dept Phys, Davis, CA USA

[9] Univ Calif Davis, IIRPA, Davis, CA USA

[10] Univ Dortmund, Inst Phys, D-44227 Dortmund, Germany

[11] CEA Saclay, DSM, DAPNIA, F-91191 Gif Sur Yvette, France

[12] Univ Glasgow, Dept Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland

[13] DESY, D-22603 Hamburg, Germany

[14] Univ Hamburg, Inst Expt Phys 1, D-22761 Hamburg, Germany

[15] Univ Hamburg, Inst Expt Phys 2, D-22761 Hamburg, Germany

[16] Max Planck Inst Kernphys, D-69029 Heidelberg, Germany

[17] Univ Heidelberg, Inst Phys, D-69120 Heidelberg, Germany

[18] Univ Heidelberg, Inst Hochenergiephys, D-69120 Heidelberg, Germany

[19] Univ Kiel, Inst Reine & Angew Kernphys, D-24118 Kiel, Germany

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

[21] Univ Lancaster, Sch Phys & Chem, Lancaster LA1 4YB, England

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

[23] Univ London Queen Mary & Westfield Coll, London E1 4NS, England

[24] Univ Lund, Dept Phys, S-22362 Lund, Sweden

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

[26] Univ Aix Marseille 2, IN2P3, CNRS, CPPM, F-13288 Marseille, France

[27] Inst Theoret & Expt Phys, RU-117924 Moscow, Russia

[28] Lebedev Phys Inst, RU-117924 Moscow, Russia

[29] Max Planck Inst Phys, D-80805 Munich, Germany

[30] Univ Paris Sud, IN2P3, CNRS, LAL, F-91405 Orsay, France

[31] Ecole Polytech, CNRS, IN2P3, LPNHE, F-91128 Palaiseau, France

[32] Univ Paris 06, IN2P3, CNRS, LPNHE, F-75252 Paris, France

[33] Univ Paris 07, IN2P3, CNRS, LPNHE, F-75252 Paris, France

[34] Acad Sci Czech Republ, Inst Phys, CZ-18040 Prague, Czech Republic

[35] Charles Univ, Nucl Ctr, CZ-18000 Prague, Czech Republic

[36] Univ Roma 3, Dipartimento Fis, I-00146 Rome, Italy

[37] INFN Roma 1, I-00146 Rome, Italy

[38] Paul Scherrer Inst, CH-5232 Villigen, Switzerland

[39] Berg Univ Gesamthsch Wuppertal, Fachbereich Phys, D-42097 Wuppertal, Germany

[40] DESY, Inst Hochenergiephys, D-15738 Zeuthen, Germany

[41] ETH Zurich, Inst Teilchenphys, CH-8093 Zurich, Switzerland

[42] Univ Zurich, Inst Phys, CH-8001 Zurich, Switzerland

[43] Humboldt Univ, Inst Phys, D-10115 Berlin, Germany

[44] Berg Univ Gesamthsch Wuppertal, Rechenzentrum, D-42097 Wuppertal, Germany

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

来源：

EUROPEAN PHYSICAL JOURNAL C | 1998年 / 1卷 / 1-2期

关键词：

D O I：

10.1007/s100520050064

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：

The double-differential inclusive di-jet cross section in photoproduction processes is measured with the H1 detector at HERA. The cross section is determined as a function of the average transverse jet energy E-T(jets) for ranges of the fractional energy x(gamma)(jets) of the parton from the photon side. An effective leading order parton distribution in the photon is determined at large parton fractional energies for scales between 80 < p(T)(2) < 1250 GeV2. The measurement is compatible with the logarithmic scale dependence that is predicted by perturbative QCD.

引用

页码：97 / 107

页数：11

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