Total cross section in γ γ collisions at LEP

被引：49

作者：

Acciarri, M

Achard, P

Adriani, O

Aguilar-Benitez, M

Alcaraz, J

Alemanni, G

Allaby, J

Aloisio, A

Alviggi, MG

Ambrosi, G

Anderhub, H

Andreev, VP

Angelescu, T

Anselmo, F

Arefiev, A

Azemoon, T

Aziz, T

Bagnaia, P

Bajo, A

Baksay, L

Balandras, A

Baldew, SV

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

Bhattacharya, S

Biasini, M

Biland, A

Blaising, JJ

Blyth, SC

Bobbink, GJ

Böhm, A

Boldizsar, L

Borgia, B

Bourilkov, D

机构：

[1] Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy

[2] Inst Theoret & Expt Phys, Moscow, Russia

[3] Ist Nazl Fis Nucl, Sez Napoli, I-80125 Naples, Italy

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

[5] Univ Cyprus, Dept Nat Sci, Nicosia, Cyprus

[6] Univ Nijmegen, NL-6525 ED Nijmegen, Netherlands

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

[8] CALTECH, Pasadena, CA 91125 USA

[9] Ist Nazl Fis Nucl, Sez Perugia, I-06100 Perugia, Italy

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

[11] Russian Acad Sci, Inst Nucl Phys, St Petersburg, Russia

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

[13] Ist Nazl Fis Nucl, Sez Napoli, I-85100 Potenza, Italy

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

[15] Princeton Univ, Princeton, NJ 08544 USA

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

[17] Ist Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy

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

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

[20] Ist Nazl Fis Nucl, I-84100 Salerno, Italy

[21] Univ Calif San Diego, La Jolla, CA 92093 USA

[22] Bulgarian Acad Sci, Cent Lab Mechatron & Instrumentat, BU-1113 Sofia, Bulgaria

[23] Kyungpook Natl Univ, High Energy Phys Lab, Taegu 702701, South Korea

[24] Univ Alabama, University, AL 35486 USA

[25] Univ Utrecht, NL-3584 CB Utrecht, Netherlands

[26] NIKHEF H, NL-3584 CB Utrecht, Netherlands

[27] Purdue Univ, W Lafayette, IN 47907 USA

[28] Paul Scherrer Inst, CH-5232 Villigen, Switzerland

[29] DESY, D-15738 Zeuthen, Germany

[30] Swiss Fed Inst Technol, CH-8093 Zurich, Switzerland

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

[32] Natl Cent Univ, Chungli, Taiwan

[33] Natl Tsing Hua Univ, Dept Phys, Hsinchu 300, Taiwan

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

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

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

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

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

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

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

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

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

[43] Humboldt Univ, D-10099 Berlin, Germany

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

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

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

[47] Northeastern Univ, Boston, MA 02115 USA

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

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

[50] Hungarian Acad Sci, Cent Res Inst Phys, H-1525 Budapest 114, Hungary

来源：

PHYSICS LETTERS B | 2001年 / 519卷 / 1-2期

关键词：

D O I：

10.1016/S0370-2693(01)01072-3

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The reaction e(+)e(-) --> e(+)e(-)gamma (*)gamma (*) --> e(+)e(-) hadrons for quasi-real photons is studied using data from roots = 183 GeV up to 202 GeV. Results on the total cross sections sigma (e(+)e(-) -->e(+)e(-) hadrons) and sigma (gamma gamma --> hadrons) are given for the two-photon centre-of-mass energies 5 GeV less than or equal to W gamma gamma less than or equal to 185 GeV, The total cross section of two real photons is described by a Regge parametrisation. We observe a steeper rise with the two-photon centre-of-mass energy as compared to the hadron-hadron and the photon-proton cross sections. The data are also compared to the expectations of different theoretical models. (C) 2001 Published by Elsevier Science B.V.

引用

页码：33 / 45

页数：13

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