Measurement of deeply virtual Compton scattering at HERA

被引：162

作者：

Aktas, A

Andreev, V

Anthonis, T

Aplin, S

Asmone, A

Astvatsatourov, A

Babaev, A

Backovic, S

Bähr, J

Baghdasaryan, A

Baranov, P

Barrelet, E

Bartel, W

Baudrand, S

Baumgartner, S

Becker, J

Beckingham, M

Behnke, O

Behrendt, O

Belousov, A

Berger, C

Berger, N

Bizot, JC

Boenig, MO

Boudry, V

Bracinik, J

Brandt, G

Brisson, V

Brown, DP

Bruncko, D

Büsser, FW

Bunyatyan, A

Buschhorn, G

Bystritskaya, L

Campbell, AJ

Caron, S

Cassol-Brunner, F

Cerny, K

Cerny, V

Chekelian, V

Contreras, JG

Coughlan, JA

Cox, BE

Cozzika, G

Cvach, J

Dainton, JB

Dau, WD

Daum, K

de Boer, Y

Delcourt, B

机构：

[1] DESY, D-2000 Hamburg, 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 & Astron, Birmingham, W Midlands, England

[5] Interuniv Inst High Energies ULB VUB, Brussels, Belgium

[6] Univ Antwerp, B-2020 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] Ctr Etud Saclay, CEA, DSM, DAPNIA, F-91191 Gif Sur Yvette, France

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

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

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

[15] Heidelberg Univ, Inst Phys, Heidelberg, Germany

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

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

[18] Univ Lancaster, Dept Phys, Lancaster, England

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

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

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

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

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

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

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

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

[30] Ecole Polytech, CNRS, IN2P3, LLR, F-91128 Palaiseau, France

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

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

[33] Univ Montenegro, Fac Sci, Podgorica, Serbia Monteneg

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

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

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

[37] INFN Roma 3, Rome, Italy

[38] Bulgarian Acad Sci, Inst Nucl Res & Nucl Energy, Sofia, Bulgaria

[39] Paul Scherrer Inst, Villigen, Switzerland

[40] Univ Wuppertal, Fachbereich C, Wuppertal, Germany

[41] Yerevan Phys Inst, Yerevan 375036, Armenia

[42] DESY, Zeuthen, Germany

[43] ETH, Inst Teilchenphys, Zurich, Switzerland

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

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

[46] Univ Wuppertal, Rech Zentrum, Wuppertal, Germany

[47] Safarik Univ, Kosice, Slovakia

[48] CERN, Geneva, Switzerland

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

[50] Comenius Univ, Bratislava, Slovakia

来源：

EUROPEAN PHYSICAL JOURNAL C | 2005年 / 44卷 / 01期

关键词：

D O I：

10.1140/epjc/s2005-02345-3

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：

A measurement is presented of elastic deeply virtual Compton scattering gamma* p -> gamma p made using e(+) p collision data corresponding to a luminosity of 46.5 pb(-1), taken with the H1 detector at HERA. The cross section is measured as a function of the photon virtuality, Q(2), the invariant mass of the gamma* p system, W, and for the first time, differentially in the squared momentum transfer at the proton vertex, t, in the kinematic range 2 < Q(2) < 80 GeV2, 30 < W < 140 GeV and vertical bar t vertical bar < 1 GeV2. QCD based calculations at next-to-leading order using generalized parton distributions can describe the data, as can colour dipole model predictions.

引用

页码：1 / 11

页数：11

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