Measurement of D*± meson production and Fc2 in deep-inelastic scattering at HERA

被引：129

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

Bate, P

Beglarian, A

Behnke, O

Beier, C

Belousov, A

Benisch, T

Berger, C

Berndt, T

Bizot, JC

Boudry, V

Braunschweig, W

Brisson, V

Bröker, HB

Brown, DP

Brückner, W

Bruncko, D

Bürger, J

Büsser, FW

Bunyatyan, A

Burrage, A

Buschhorn, G

Campbell, AJ

Cao, J

Carli, T

Caron, S

Clarke, D

Clerbaux, B

Collard, C

Contreras, JG

Coppens, YR

Coughlan, JA

Cousinou, MC

Cox, BE

Cozzika, G

Cvach, J

Dainton, JB

Dau, WD

Daum, K

Davidsson, M

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] Univ Instelling Antwerp, InterUniv Inst High Energies, ULB, VUB, B-2610 Wilrijk, Belgium

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

[7] Inst Phys Nucl, Krakow, Poland

[8] Joint Nucl Res Inst, Dubna, Russia

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

[10] DESY, D-2000 Hamburg, Germany

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

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

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

[14] Univ Heidelberg, Kirchhoff Inst Phys, D-6900 Heidelberg, Germany

[15] Univ Kiel, Inst Expt & Angew Phys, D-24098 Kiel, Germany

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

[17] Univ Lancaster, Sch Phys & Chem, Lancaster LA1 4YW, England

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

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

[20] Lund Univ, Dept Phys, S-22100 Lund, Sweden

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

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

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

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

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

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

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

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

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

[30] Univ Roma Tre, Dipartimento Fis, Rome, Italy

[31] INFN Roma 3, Rome, Italy

[32] Paul Scherrer Inst, Villigen, Switzerland

[33] Yerevan Phys Inst, Yerevan 375036, Armenia

[34] DESY, Zeuthen, Germany

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

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

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

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

[39] Univ Karlsruhe, Inst Expt Kernphys, Karlsruhe, Germany

[40] CINVESTAV, Dept Fis Aplicada, Merida, Yucatan, Mexico

[41] Safarik Univ, Kosice, Slovakia

[42] CERN, CH-1211 Geneva 23, Switzerland

来源：

PHYSICS LETTERS B | 2002年 / 528卷 / 3-4期

关键词：

D O I：

10.1016/S0370-2693(02)01195-4

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The inclusive production of D*+/-(2010) mesons in deep-inelastic scattering is studied with the HI detector at HERA. In the kinematic region 1 < Q(2) < 100 GeV2 and 0.05 < y < 0.7 an e(+) p cross section for inclusive D*+/- meson production of 8.50 +/- 0.42(stat.)(-100)(+1.21)(syst.) nb is measured in the visible range p(tD*) > 1.5 GeV and \eta(D*)\ < 1.5. Single and double differential inclusive D*+/- meson cross sections are compared to perturbative QCD calculations in two different evolution schemes, The charm contribution to the proton structure, F-c(2)(x, Q(2)), is determined by extrapolating the visible charm cross section to the full phase space. This contribution is found to rise from about 10% at Q(2) = 1.5 GeV2 to more than 25% at Q(2) = 60 GeV2 corresponding to x values ranging from 5 x 10(-5) to 3 x 10(-3). (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：199 / 214

页数：16

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