Charmonium production in deep inelastic scattering at HERA

被引：111

作者：

Adloff, C ^{[1
]}

Andreev, V

Andrieu, B

Arkadov, V

Astvatsatourov, A

Ayyaz, I

Babaev, A

Bähr, J

Baranov, P

Barrelet, E

Bartel, W

Bassler, U

Bate, P

Beglarian, A

Behnke, O

Behrend, HJ

Beier, C

Belousov, A

Berger, C

Bernardi, G

Berndt, T

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

Burrage, A

Buschhorn, G

Calvet, D

Campbell, AJ

Carli, T

Chabert, C

Charlet, M

Clarke, D

Clerbaux, B

Contreras, JG

Cormack, C

Coughlan, JA

Cousinou, MC

Cox, BE

Cozzika, G

机构：

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

[2] Rhein Westfal TH Aachen, Inst Phys 3, Aachen, Germany

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

[4] Free Univ Brussels, Interuniv Inst High Energies, Brussels, Belgium

[5] Univ Instelling Antwerp, B-2610 Antwerp, Belgium

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

[7] Inst Nucl Phys, Krakow, Poland

[8] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA

[9] Univ Calif Davis, IIRPA, Davis, CA 95616 USA

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

[11] Joint Inst Nucl Res, Dubna, Russia

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

[13] DESY, D-2000 Hamburg, Germany

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

[29] Ctr Univ Paris Sud, LAL, CNRS, IN2P3, Orsay, France

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

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

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

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

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

[35] Ist Nazl Fis Nucl Roma 1, Rome, Italy

[36] Univ Roma 3, Dept Fis, Rome, Italy

[37] Paul Scherrer Inst, Villigen, Switzerland

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

[39] DESY, Inst Hochenergiephys, Zeuthen, Germany

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

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

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

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

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

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

来源：

EUROPEAN PHYSICAL JOURNAL C | 1999年 / 10卷 / 03期

关键词：

D O I：

10.1007/s100520050762

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 electroproduction of J/psi and psi(2S) mesons is studied in elastic, quasi-elastic and inclusive reactions for four momentum transfers 2 < Q(2) < 80 GeV2 and photon-proton centre of mass energies 25 < W < 180 GeV. The data were taken with the H1 detector at the electron proton collider HERA in rile years 1995 to 1997. The total virtual photon-proton cross section for elastic J/psi production is measured as a function of Q(2) and W. The dependence of the production rates on the square of the momentum transfer from the proton (t) is extracted. Decay angular distributions are analysed and the ratio of the longitudinal and transverse cross sections is derived. The ratio of the cross sections for quasi-elastic psi(2S) and J/psi meson production is measured as a function of Q(2). Tilt results are discussed in terms of theoretical models based upon perturbative QCD. Differential cross sections for inclusive and inelastic production of J/psi mesons are determined and predictions within two theoretical frameworks are compared with the data, the non-relativistic QCD factorization approach including colour octet and colour singlet contributions, and the model of Soft Colour Interactions.

引用

页码：373 / 393

页数：21

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