Measurement of exclusive p+p- production in mid-virtuality two-photon interactions and study of the yy* → pp process at LEP

被引：18

作者：

Achard, P ^{[1
]}

Adriani, O

Aguilar-Benitez, M

Alcaraz, J

Alemanni, G

Allaby, J

Aloisio, A

Alviggi, MG

Anderhub, H

Andreev, VP

Anselmo, F

Arefiev, A

Azemoon, T

Aziz, T

Bagnaia, P

Bajo, A

Baksay, G

Baksay, L

Baldew, S

Banerjee, S

Barczyk, A

Barillère, R

Bartalini, P

Basile, M

Batalova, N

Battiston, R

Bay, A

Becattini, F

Becker, U

Behner, F

Bellucci, L

Berbeco, R

Berdugo, J

Berges, P

Bertucci, B

Betev, BL

Biasini, M

Biglietti, M

Biland, A

Blaising, JJ

Blyth, SC

Bobbink, GJ

Böhm, A

Boldizsar, L

Borgia, B

Bottai, S

Bourilkov, D

Bourquin, M

Braccini, S

机构：

[1] Rhein Westfal TH Aachen, Inst Phys 3, D-52056 Aachen, Germany

[2] NIKHEF H, Natl Inst High Energy Phys, NL-1009 DB Amsterdam, Netherlands

[3] Univ Amsterdam, NL-1009 DB Amsterdam, Netherlands

[4] Univ Michigan, Ann Arbor, MI 48109 USA

[5] Lab Annecy Le Vieux Phys Particules, LAPP, IN2P3, CNRS, F-74941 Annecy Le Vieux, France

[6] Univ Basel, Inst Phys, CH-4056 Basel, Switzerland

[7] Louisiana State Univ, Baton Rouge, LA 70803 USA

[8] Inst High Energy Phys, Beijing 100039, Peoples R China

[9] Univ Bologna, I-40126 Bologna, Italy

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

[11] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India

[12] Northeastern Univ, Boston, MA 02115 USA

[13] Inst Atom Phys, R-76900 Bucharest, Romania

[14] Univ Bucharest, R-76900 Bucharest, Romania

[15] Hungarian Acad Sci, Cent REs Inst Phys, H-1525 Budapest, Hungary

[16] MIT, Cambridge, MA 02139 USA

[17] Panjab Univ, Chandigarh 160014, India

[18] Univ Debrecen, ATOMKI, H-4010 Debrecen, Hungary

[19] Natl Univ Ireland Univ Coll Dublin, Dept Expt Phys, Dublin 4, Ireland

[20] Univ Florence, I-50125 Florence, Italy

[21] Ist Nazl Fis Nucl, Sezione Firenze, I-50125 Florence, Italy

[22] CERN, European Lab Particle Phys, CH-1211 Geneva, Switzerland

[23] World Lab, FBLJA Project, CH-1211 Geneva, Switzerland

[24] Univ Geneva, Geneva 4, Switzerland

[25] Univ Hamburg, D-22761 Hamburg, Germany

[26] USTC, Chinese Univ Sci & Technol, Hefei 230029, Anhui, Peoples R China

[27] Univ Lausanne, CH-1015 Lausanne, Switzerland

[28] Univ Lyon 1, IN2P3, CNRS, Inst Phys Nucl Lyon, F-69622 Villeurbanne, France

[29] CIEMAT, Ctr Invest Energet Medioambientales & Tecnol, E-28040 Madrid, Spain

[30] Florida Inst Technol, Melbourne, FL 32901 USA

[31] Ist Nazl Fis Nucl, Sezione Milano, I-20133 Milan, Italy

[32] ITEP, Inst Theoret & Expt Phys, Moscow, Russia

[33] INFN, Sezione Napoli, I-80125 Naples, Italy

[34] Univ Naples Federico II, I-80125 Naples, Italy

[35] Univ Cyprus, Dept Phys, Nicosia, Cyprus

[36] Radbound Univ, NL-6525 ED Nijmegen, Netherlands

[37] Natl Inst Nucl Phys & High Energy Phys, NL-6525 ED Nijmegen, Netherlands

[38] CALTECH, Pasadena, CA 91125 USA

[39] Ist Nazl Fis Nucl, Sezione Perugia, I-06100 Perugia, Italy

[40] Univ Perugia, I-06100 Perugia, Italy

[41] Inst Phys Nucl, St Petersburg, Russia

[42] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA

[43] INFN, Sezione Napoli, I-85100 Potenza, Italy

[44] Univ Potenza, I-85100 Potenza, Italy

[45] Princeton Univ, Princeton, NJ 08544 USA

[46] Univ Calif Riverside, Riverside, CA 92521 USA

[47] Ist Nazl Fis Nucl, Sezione Roma, I-00185 Rome, Italy

[48] Univ Roma La Sapienza, I-00185 Rome, Italy

[49] Univ Salerno, I-84100 Salerno, Italy

[50] INFN, I-84100 Salerno, Italy

来源：

PHYSICS LETTERS B | 2005年 / 615卷 / 1-2期

关键词：

D O I：

10.1016/j.physletb.2005.04.011

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Exclusive p(+)p(-) production in two-photon collisions between a quasi-real photon, gamma, and a mid-virtuality photon, gamma*, is studied with data collected at LEP at centre-of-mass energies 183 GeV <= root s- <= 209 GeV with a total integrated luminosity of 684.8 pb(-1). The cross section of the gamma gamma* -> p(+)p(-) process is determined as a function of the photon virtuality, Q(2), and the two-photoncentre-of-mass energy, W-gamma gamma, in thekinernatic region: 0.2 GeV2 < Q(2) < 0.85 GeV2 and 1.1 GeV < W gamma gamma < 3 GeV. These results, together with previous L-3 measurements of p(0) p(0) and p(+) to p(-) production, allow a study of the gamma gamma* -> pp process over the Q(2)-region 0.2 GeV2 <= Q(2) <= 30 GeV2. (c) 2005 Published by Elsevier B.V.

引用

页码：19 / 30

页数：12

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