Search for R-parity violating decays of scalar fermions at LEP

被引：22

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

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

Cooke, OC

机构：

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

[2] Univ Bologna, Dipartmento Fis, I-40126 Bologna, Italy

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

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

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

[6] Univ Cambridge, 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] CLRC, 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, Int Ctr Elementary Particle Phys, Tokyo 1130033, Japan

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

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

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

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

[30] Stanislaw Staszic Univ Min & Met, PL-30059 Krakow, Poland

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

来源：

EUROPEAN PHYSICAL JOURNAL C | 2000年 / 12卷 / 01期

关键词：

D O I：

10.1007/s100529900226

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 pair produced scalar fermions with couplings that violate R-parity has been performed using a data sample corresponding to an integrated luminosity of 56 pb(-1) at a centre-of-mass energy of root s = 183 GeV collected with the OPAL detector at LEP. An important consequence of R-parity breaking interactions is that the lightest supersymmetric particle is expected to be unstable. Searches for R-parity violating decays of charged sleptons, sneutrinos and stop quarks have been performed under the assumptions that the lightest supersymmetric particle decays promptly and that only one of the R-parity violating couplings is dominant for each of the decay modes considered. Such processes would yield multileptons, jets plus leptons or multi-jets, with or without missing energy, in the final state. No significant excess of such events has been observed. Limits on the production cross-sections of scalar fermions in R-parity violating scenarios are obtained. Mass exclusion regions are also presented in the framework of the Constrained Minimal Supersymmetric Standard Model.

引用

页码：1 / 24

页数：24

共 74 条

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Barlow, RJ ;

Bartoldus, R ;

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Bella, G ;

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Bright-Thomas, P ;

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