Exclusive electroproduction of φ mesons at HERA

被引：94

作者：

Chekanov, S

Derrick, M

Magill, S

Miglioranzi, S

Musgrave, B

Repond, J

Yoshida, R

Mattingly, MCK

Pavel, N

Molina, AGY

Antonioli, P

Bari, G

Basile, M

Bellagamba, L

Boscherini, D

Bruni, A

Bruni, G

Romeo, GC

Cifarelli, L

Cindolo, E

Contin, A

Corradi, M

De Pasquale, S

Giusti, P

Iacobucci, G

Margotti, A

Montanari, A

Nania, R

Palmonari, F

Pesci, A

Polini, A

Rinaldi, L

Sartorelli, G

Zichichi, A

Aghuzumtsyan, G

Bartsch, D

Brock, I

Goers, S

Hartmann, H

Hilger, E

Irrgang, P

Jakob, HP

Kind, OM

Meyer, U

Paul, E

Rautenberg, J

Renner, R

Voss, KC

Wang, M

Wlasenko, M

机构：

[1] Argonne Natl Lab, Argonne, IL 60439 USA

[2] Andrews Univ, Berrien Springs, MI 49104 USA

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

[4] Univ Bologna, Bologna, Italy

[5] Ist Nazl Fis Nucl, I-40126 Bologna, Italy

[6] Univ Bonn, Inst Phys, D-5300 Bonn, Germany

[7] Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England

[8] Univ Calabria, Dept Phys, I-87036 Cosenza, Italy

[9] Ist Nazl Fis Nucl, I-87036 Cosenza, Italy

[10] Chonnam Natl Univ, Kwangju 500757, South Korea

[11] Columbia Univ, Nevis Labs, New York, NY 10027 USA

[12] Inst Nucl Phys, Krakow, Poland

[13] AGHAGH Univ Sci & Technol, Fac Phys & Appl Comp Sci, Krakow, Poland

[14] Jagiellonian Univ, Dept Phys, Krakow, Poland

[15] DESY, D-2000 Hamburg, Germany

[16] DESY, Zeuthen, Germany

[17] Univ Florence, Florence, Italy

[18] Ist Nazl Fis Nucl, I-50125 Florence, Italy

[19] Univ Freiburg, Fak Phys, D-7800 Freiburg, Germany

[20] Univ Glasgow, Dept Phys & Astron, Glasgow, Lanark, Scotland

[21] Univ Aegean, Dept Engn Management & Finance, Mitilini, Greece

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

[23] Univ London Imperial Coll Sci Technol & Med, High Energy Nucl Phys Grp, London, England

[24] Natl Lab High Energy Phys, KEK, Inst Particle & Nucl Studies, Tsukuba, Ibaraki 305, Japan

[25] Minist Educ & Sci Kazakhstan, Inst Phys & Technol, Almaaty, Kazakhstan

[26] Kyungpook Natl Univ, Ctr High Energy Phys, Taegu, South Korea

[27] Catholic Univ Louvain, Inst Nucl Phys, B-1348 Louvain, Belgium

[28] Univ Autonoma Madrid, Dept Fis Teor, Madrid, Spain

[29] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada

[30] Meiji Gakuin Univ, Fac Gen Educ, Yokohama, Kanagawa, Japan

[31] Moscow Phys Engn Inst, Moscow, Russia

[32] Moscow MV Lomonosov State Univ, Inst Nucl Phys, Moscow, Russia

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

[34] NIKHEF, Amsterdam, Netherlands

[35] Univ Amsterdam, Amsterdam, Netherlands

[36] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA

[37] Univ Oxford, Dept Phys, Oxford, England

[38] Univ Padua, Dipartimento Fis, Padua, Italy

[39] Ist Nazl Fis Nucl, Padua, Italy

[40] Penn State Univ, Dept Phys, University Pk, PA 16802 USA

[41] Polytech Univ, Sagamihara, Kanagawa, Japan

[42] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy

[43] Ist Nazl Fis Nucl, I-00185 Rome, Italy

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

[45] Tel Aviv Univ, Raymond & Beverly Sackler Fac Exact Sci, Sch Phys, IL-69978 Tel Aviv, Israel

[46] Tokyo Inst Technol, Dept Phys, Tokyo 152, Japan

[47] Univ Tokyo, Dept Phys, Tokyo 113, Japan

[48] Tokyo Metropolitan Univ, Dept Phys, Tokyo 158, Japan

[49] Univ Turin, Turin, Italy

[50] Ist Nazl Fis Nucl, I-10125 Turin, Italy

来源：

NUCLEAR PHYSICS B | 2005年 / 718卷 / 1-2期

关键词：

D O I：

10.1016/j.nuclphysb.2005.04.009

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：

Exclusive electroproduction of phi mesons has been studied in e (+/-) p collisions at root s = 318 GeV with the ZEUS detector at HERA using an integrated luminosity of 65.1 pb(-l). The gamma*p crosssection is presented in the kinematic range 2 GeV2 < Q(2) < 70 GeV2, 35 GeV < W < 145 GeV and vertical bar t vertical bar < 0.6 GeV2. The cross sections as functions of Q(2), W, t and helicity angle phi(h) are compared to cross sections for other vector mesons. The ratios R of the cross sections for longitudinally and transversely polarized virtual photons are presented as functions of Q2 and W. The data are also compared to predictions from theoretical models. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：3 / 31

页数：29

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