Forward jet and particle production at HERA

被引：85

作者：

Adloff, C ^{[1
]}

Anderson, M

Andreev, V

Andrieu, B

Arkadov, V

Arndt, C

Ayyaz, I

Babaev, A

Bähr, J

Bán, J

Baranov, P

Barrelet, E

Bartel, W

Bassler, U

Bate, P

Beck, M

Beglarian, A

Behnke, O

Behrend, HJ

Beier, C

Belousov, A

Berger, C

Bernardi, G

Bertrand-Coremans, G

Biddulph, P

Bizot, JC

Boudry, V

Braunschweig, W

Brisson, V

Brown, DP

Brückner, W

Bruel, P

Bruncko, D

Bürger, J

Büsser, FW

Buniatian, A

Burke, S

Buschhorn, G

Calvet, D

Campbell, AJ

Carli, T

Chabert, E

Charlet, M

Clarke, D

Clerbaux, B

Cocks, S

Contreras, JG

Cormack, C

Coughlan, JA

Cousinou, MC

机构：

[1] Berg Univ Gesamthsch 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] ULB VUB, Interuniv Inst High Energies, Brussels, Belgium

[6] Univ Instelling Antwerp, B-2610 Wilrijk, Belgium

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

[8] Inst Nucl Phys, Krakow, Poland

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

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

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

[12] Joint Inst Nucl Res, Dubna, Russia

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

[14] DESY, D-2000 Hamburg, Germany

[15] Univ Hamburg, Inst Expt Phys 2, D-2000 Hamburg, Germany

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

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

[18] Univ Heidelberg, Inst Hochenergiephys, Heidelberg, Germany

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

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

[21] Univ Lancaster, Sch Phys & Chem, Lancaster, 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, Lund, Sweden

[25] Univ Manchester, Dept Phys & Astron, Manchester, Lancs, England

[26] Univ Aix Marseille 2, CPPM, CNRS, IN2P3, F-13284 Marseille 07, France

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

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

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

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

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

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

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

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

[35] Charles Univ, Nucl Ctr, Prague, Czech Republic

[36] INFN Roma 1, Rome, Italy

[37] Univ Roma 3, Dipartimento Fis, Rome, Italy

[38] Paul Scherrer Inst, Villigen, Switzerland

[39] DESY, Inst Hochenergiephys, Zeuthen, Germany

[40] ETH Zurich, Inst Teilchenphys, Zurich, Switzerland

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

[42] Humboldt Univ, Inst Phys, Berlin, Germany

[43] Berg Univ Gesamthsch Wuppertal, Rechenzentrum, Wuppertal, Germany

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

来源：

NUCLEAR PHYSICS B | 1999年 / 538卷 / 1-2期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1016/S0550-3213(98)00745-7

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：

Single particles and jets in deeply inelastic scattering at low x are measured with the Hl detector in the region away from the current jet and towards the proton remnant, known as the forward region. Hadronic final stale measurements in this region are expected to be particularly sensitive to QCD evolution effects. Jet cross sections are presented as a function of Bjorken-x for forward jets produced with a polar angle to the proton direction, theta(jet), in the range 7 degrees < theta(jet) < 20 degrees. Azimuthal correlations are studied between the forward jet and the scattered lepton. Charged and neutral single particle production in the forward region are measured as a function of Bjorken-x, in the range 5 degrees < theta < 25 degrees, for particle transverse momenta larger than 1 GeV. QCD based Monte Carlo predictions and analytical calculations based on BFKL, CCFM and DGLAP evolution are compared to the data. Predictions based on the DGLAP approach fail to describe the data, except for those which allow for a resolved photon contribution. (C) 1999 Elsevier Science B.V.

引用

页码：3 / 22

页数：20

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