Measurement of the hadronic cross-section for the scattering of two virtual photons at LEP

被引：26

作者：

Abbiendi, G ^{[1
]}

Ainsley, C

Åkesson, PF

Alexander, G

Allison, J

Anagnostou, G

Anderson, KJ

Arcelli, S

Asai, S

Axen, D

Azuelos, G

Bailey, I

Barberio, E

Barlow, RJ

Batley, RJ

Behnke, T

Bell, KW

Bell, PJ

Bella, G

Bellerive, A

Bethke, S

Biebel, O

Bloodworth, IJ

Boeriu, O

Bock, P

Böhme, J

Bonacorsi, D

Boutemeur, M

Braibant, S

Brigliadori, L

Brown, RM

Burckhart, HJ

Cammin, J

Carnegie, RK

Caron, B

Carter, AA

Carter, JR

Chang, CY

Charlton, DG

Clarke, PEL

Clay, E

Cohen, I

Couchman, J

Csilling, A

Cuffiani, M

Dado, S

Dallavalle, GM

Dallison, S

De Roeck, A

De Wolf, EA

机构：

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

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

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

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

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

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

[7] CERN, European Org Nucl Res, CH-1211 Geneva 23, Switzerland

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

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

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

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

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

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

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

[15] UCL, London WC1E 6BT, England

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

[31] Res Inst Particle & Nucl Phys, H-1525 Budapest, Hungary

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

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

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

[35] Yale Univ, Dept Phys, New Haven, CT 06520 USA

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

[37] Nucl Res Inst, Debrecen, Hungary

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

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

[40] MPI Extraterr Phys, Munich, Germany

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

[42] Univ Calif Riverside, Hight Energy Phys Grp, Riverside, CA 92521 USA

[43] CERN, Div EP, CH-1211 Geneva 23, Switzerland

[44] Tel Aviv Univ, Sch Phys & Astron, IL-69978 Tel Aviv, Israel

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

来源：

EUROPEAN PHYSICAL JOURNAL C | 2002年 / 24卷 / 01期

关键词：

D O I：

10.1007/s100520200940

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 interaction of virtual photons is investigated using the reaction e(+)e(-) --> e(+)e(-) hadrons based on data taken by the OPAL experiment at e(+)e(-) centre-of-mass energies roots(ec) = 189-209 GeV, for W > 5 GeV and at an average Q(2) of 17.9 GeV(2). The measured cross-sections are compared to predictions of the Quark Parton Model (QPM), to the Leading Order QCD Monte Carlo model PHOJET, to the NLO prediction for the reaction e(+)e(-) --> e(+)e(-) q (q) over bar, and to BFKL calculations. PHOJET, NLO e(+)e(-) --> e(+)e(-) q (q) over bar, and QPM describe the data reasonably well, whereas the cross-section predicted by a Leading Order BFKL calculation is too large.

引用

页码：17 / 31

页数：15

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