Measurement of diffractive scattering of photons with large momentum transfer at HERA

被引：4

作者：

Aaron, F. D. ^{[7
,49
]}

Alexa, C. ^{[7
]}

Andreev, V. ^{[25
]}

Antunovic, B.

Aplin, S.

Asmone, A. ^{[34
,35
]}

Astvatsatourov, A. ^{[5
,6
]}

Bacchetta, A.

Backovic, S. ^{[31
]}

Baghdasaryan, A. ^{[39
]}

Baranov, R. ^{[25
]}

Barrelet, E. ^{[29
,30
]}

Bartel, W.

Beckingham, M.

Begzsuren, K. ^{[37
]}

Behnk, O. ^{[15
]}

Belousov, A. ^{[25
]}

Berger, N. ^{[42
]}

Bizot, J. C. ^{[27
]}

Boenig, M. -O. ^{[10
]}

Boudry, V. ^{[28
]}

Bozovic-Jelisavcic, I. ^{[3
]}

Bracinik, J. ^{[4
]}

Brandt, G.

Brinkmann, M.

Brisson, V. ^{[27
]}

Bruncko, D. ^{[17
]}

Bunyatyan, A. ^{[14
,40
]}

Buschhorn, G. ^{[26
]}

Bystritskaya, L. ^{[24
]}

Campbell, A. J.

Avila, K. B. Cantun ^{[23
]}

Cassol-Brunner, F. ^{[22
]}

Cerny, K. ^{[33
]}

Cerny, V. ^{[17
,48
]}

Chekelian, V. ^{[26
]}

Cholewa, A.

Contreras, J. G. ^{[23
]}

Coughlan, J. A. ^{[8
]}

Cozzika, G. ^{[12
]}

Cvach, J. ^{[32
]}

Dainton, J. B. ^{[19
]}

Daum, K. ^{[39
,45
]}

Deak, M.

de Boer, Y.

Delcourt, B. ^{[27
]}

Del Degan, M. ^{[42
]}

Delvax, J. ^{[5
,6
]}

De Roeck, A. ^{[47
]}

De Wolf, E. A. ^{[5
,6
]}

机构：

[1] DESY, D-2000 Hamburg, Germany

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

[3] Vinca Inst Nucl Sci, Belgrade, Serbia

[4] Univ Birmingham, Sch Phys & Astron, Birmingham, W Midlands, England

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

[6] Univ Antwerp, B-2020 Antwerp, Belgium

[7] NIPNE, Bucharest, Romania

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

[9] Inst Nucl Phys, Krakow, Poland

[10] TU Dortmund, Inst Phys, Dortmund, Germany

[11] Joint Inst Nucl Res, Dubna, Russia

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

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

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

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

[16] Heidelberg Univ, Kirchhoff Inst Phys, D-6900 Heidelberg, 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 Mediterranee, CPPM, CNRS, IN2P3, Marseille, France

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

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

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

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

[27] Univ Paris 11, CNRS, LAL, IN2P3, F-91405 Orsay, France

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

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

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

[31] Univ Montenegro, Fac Sci, Podgorica, Montenegro

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

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

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

[35] INFN Roma 3, Rome, Italy

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

[37] Mongolian Acad Sci, Inst Phys & Technol, Ulaanbaatar, Mongolia

[38] Paul Scherrer Inst, Villigen, Switzerland

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

[40] Yerevan Phys Inst, Yerevan 375036, Armenia

[41] DESY, Zeuthen, Germany

[42] ETH, Inst Teilchenphys, Zurich, Switzerland

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

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

[45] Univ Wuppertal, Rechenzentrum, Wuppertal, Germany

[46] Safarik Univ, Kosice, Slovakia

[47] CERN, Geneva, Switzerland

[48] Comenius Univ, Bratislava, Slovakia

[49] Univ Bucharest, Fac Phys, Bucharest, Romania

[50] Ulaanbaatar Univ, Ulaanbaatar, Mongolia

来源：

PHYSICS LETTERS B | 2009年 / 672卷 / 03期

基金：

瑞士国家科学基金会; 英国科学技术设施理事会;

关键词：

RAPIDITY GAPS; J/PSI MESONS; PHOTOPRODUCTION; PROTON; CALORIMETER; DEPENDENCE; JETS;

D O I：

10.1016/j.physletb.2009.01.019

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The first measurement of diffractive scattering of quasi-real photons with large momentum transfer gamma p -> gamma Y, where Y is the proton dissociative system, is made using the H1 detector at HERA. The measurement is performed for initial photon virtualities Q(2) < 0.01 GeV2. Single differential cross sections are Measured as a function of W, the incident photon-proton centre of mass energy, and t, the square of the four-momentum transferred at the proton vertex, in the range 175 < W < 247 GeV and 4 < |t| < 36 GeV2. The W dependence is well described by a model based on perturbative QCD using a leading logarithmic approximation of the BFKL evolution. The measured |t| dependence is harder than that predicted by the model and those observed in exclusive vector meson production. (C) 2009 Published by Elsevier B.V.

引用

页码：219 / 226

页数：8

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