Search for a massive Di-photon resonance at √s=91-172 GeV

被引：16

作者：

Ackerstaff, K ^{[1
]}

Alexander, G

Allison, J

Altekamp, N

Anderson, KJ

Anderson, S

Arcelli, S

Asai, S

Axen, D

Azuelos, G

Ball, AH

Barberio, E

Barlow, RJ

Bartoldus, R

Batley, JR

Baumann, S

Bechtluft, J

Beeston, C

Behnke, T

Bell, AN

Bell, KW

Bella, G

Bentvelsen, S

Bethke, S

Biebel, O

Biguzzi, A

Bird, SD

Blobel, V

Bloodworth, IJ

Bloomer, JE

Bobinski, M

Bock, P

Bonacorsi, D

Boutemeur, M

Bouwens, BT

Braibant, S

Brigliadori, L

Brown, RM

Burckhart, HJ

Burgard, C

Burgin, R

Capiluppi, P

Carnegie, RK

Carter, AA

Carter, JR

Chang, CY

Charlton, DG

Chrisman, D

Clarke, PEL

Cohen, I

机构：

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

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

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

[4] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

[5] Univ Birmingham, Sch Phys & Space Res, Birmingham B15 2TH, W Midlands, England

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

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

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

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

[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] Rhein Westfal TH 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, Nucl Phys Lab, Quebec City, PQ H3C 3J7, Canada

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

[22] Rutherford Appleton Lab, 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, Dept Phys, Tokyo 113, Japan

[26] Univ Tokyo, Int Ctr Elementary Particle Phys, Tokyo 113, Japan

[27] Kobe Univ, Kobe, Hyogo 657, Japan

[28] Brunel Univ, Uxbridge UB8 3PH, Middx, England

[29] Weizmann Inst Sci, Dept Particle Phys, 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] Duke Univ, Dept Phys, Durham, NC 27708 USA

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

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

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

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

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

[40] NYU, Dept Phys, New York, NY 10003 USA

来源：

EUROPEAN PHYSICAL JOURNAL C | 1998年 / 1卷 / 1-2期

关键词：

D O I：

10.1007/s100520050060

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：

A search for the resonant production of high mass photon pairs associated with a leptonic or hadronic system has been performed using a total data sample of 25.7 pb(-1) taken a! centre-of-mass energies between 130 GeV and 172 GeV with the OPAL detector at LEP. The observed number of events is consistent with the expected number from Standard Model processes. The observed candidates are combined with search results from root s approximate to M-z to place limits on B(H-0 --> gamma gamma) within the Standard Model for Higgs boson masses up to 77 GeV, and on the production cross section of any scaler resonance decaying into di-photons. Upper limits on B(H-0 --> gamma gamma) x sigma(e(+)e(-)-->H2O) of 290 - 830 fb are obtained over 40 < M-H < 160 GeV. Higgs scalars which couple only to gauge bosons with Standard Model strength are ruled out lip to a mass of 76.5 GeV at the 95% confidence level.

引用

页码：31 / 43

页数：13

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