Total hadronic cross-section of photon-photon interactions at LEP

被引：67

作者：

Abbiendi, G ^{[1
]}

Ackerstaff, K

Alexander, G

Allison, J

Altekamp, N

Anderson, KJ

Anderson, S

Arcelli, S

Asai, S

Ashby, SF

Axen, D

Azuelos, G

Ball, AH

Barberio, E

Barillari, T

Barlow, RJ

Batley, JR

Baumann, S

Bechtluft, J

Behnke, T

Bell, KW

Bella, G

Bellerive, A

Bentvelsen, S

Bethke, S

Betts, S

Biebel, O

Biguzzi, A

Bloodworth, IJ

Bock, P

Böhme, J

Bonacorsi, D

Boutemeur, M

Braibant, S

Bright-Thomas, P

Brigliadori, L

Brown, RM

Burckhart, HJ

Capiluppi, P

Carnegie, RK

Carter, AA

Carter, JR

Chang, CY

Charlton, DG

Chrisman, D

Ciocca, C

Clarke, PEL

Clay, E

Cohen, I

Conboy, JE

机构：

[1] Univ Bologna, Dipartimento Fis, I-40126 Bologna, Italy

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

[3] Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England

[4] Univ Bonn, Inst Phys, D-53115 Bonn, Germany

[5] Univ Calif Riverside, Dept Phys, Riverside, CA 92521 USA

[6] Cavendish Lab, Cambridge CB3 0HE, England

[7] Carleton Univ, Dept Phys, Ottawa Carleton Inst Phys, Ottawa, ON K1S 5B6, Canada

[8] Carleton Univ, Ctr Res Particle Phys, Ottawa, ON K1S 5B6, Canada

[9] CERN, European Org Particle Phys, CH-1211 Geneva 23, Switzerland

[10] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA

[11] Univ Chicago, Dept Phys, Chicago, IL 60637 USA

[12] Univ Freiburg, Fak Phys, D-79104 Freiburg, Germany

[13] Heidelberg Univ, Inst Phys, D-69120 Heidelberg, Germany

[14] Indiana Univ, Dept Phys, Bloomington, IN 47405 USA

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

[16] Tech Hsch Aachen, Inst Phys 3, D-52056 Aachen, Germany

[17] UCL, London WC1E 6BT, England

[18] Univ Manchester, Schuster Lab, Dept Phys, Manchester M13 9PL, Lancs, England

[19] Univ Maryland, Dept Phys, College Pk, MD 20742 USA

[20] Univ Montreal, Phys Nucl Lab, Montreal, PQ H3C 3J7, Canada

[21] Univ Oregon, Dept Phys, Eugene, OR 97403 USA

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

[23] Technion Israel Inst Technol, Dept Phys, IL-32000 Haifa, Israel

[24] Tel Aviv Univ, Dept Phys & Astron, IL-69978 Tel Aviv, Israel

[25] Univ Tokyo, Int Ctr Elementary Particle Phys, Tokyo 1130033, Japan

[26] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan

[27] Kobe Univ, Kobe, Hyogo 6578501, Japan

[28] Brunel Univ, Inst Phys & Environm Sci, Uxbridge UB8 3PH, Middx, England

[29] Weizmann Inst Sci, Particle Phys Dept, IL-76100 Rehovot, Israel

[30] Univ Hamburg, DESY, Inst Expt Phys 2, D-22607 Hamburg, Germany

[31] Univ Victoria, Dept Phys, Victoria, BC V8W 3P6, Canada

[32] Univ British Columbia, Dept Phys, Vancouver, BC V6T 1Z1, Canada

[33] Univ Alberta, Dept Phys, Edmonton, AB T6G 2J1, Canada

[34] Res Inst Particle & Nucl Phys, Budapest, Hungary

[35] Inst Nucl Res, H-4001 Debrecen, Hungary

[36] Univ Munich, Sekt Phys, D-85748 Garching, Germany

[37] TRIUMF, Vancouver, BC V6T 2A3, Canada

[38] Inst Nucl Res, H-4001 Debrecen, Hungary

[39] Univ Min & Met Krakow, Krakow, Poland

[40] Univ Debrecen, Dept Expt Phys, Debrecen, Hungary

来源：

EUROPEAN PHYSICAL JOURNAL C | 2000年 / 14卷 / 02期

关键词：

D O I：

10.1007/s100520000352

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：

The total hadronic cross-section sigma gamma gamma(W) for the interaction of real photons, gamma gamma --> hadrons, is measured for gamma gamma centre-of-mass energies 10 less than or equal to W less than or equal to 110 GeV. The cross-section is extracted from a measurement of the process e(+)e(-) --> e(+)e(-) gamma*gamma* --> e(+)e(-) + hadrons, using a luminosity function for the photon flux together with form factors for extrapolating to real photons (Q(2) = 0 GeV2). The data, were taken with the OPAL detector at LEP at e(+)e(-) centre-of-mass energies root s(ee) = 161, 172 and 183 GeV. The cross-section sigma gamma gamma (W) is compared with Regge factorisation and with the energy dependence observed in yp and pp interactions. The data are also compared to models which predict a faster rise of sigma gamma gamma(W) compared to gamma p and pp interactions due to additional hard gamma gamma interactions not present in hadronic collisions.

引用

页码：199 / 212

页数：14

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