Search for stable and long-lived massive charged particles in e+e- collisions at √s=130-183 GeV

被引：29

作者：

Ackerstaff, K ^{[1
]}

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

Bartoldus, R

Batley, JR

Baumann, S

Bechtluft, J

Behnke, T

Bell, KW

Bella, G

Bentvelsen, S

Bethke, S

Betts, S

Biebel, O

Biguzzi, A

Bird, SD

Blobel, V

Bloodworth, IJ

Bobinski, M

Bock, P

Bonacorsi, D

Boutemeur, M

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

Conboy, JE

Cooke, OC

机构：

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

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

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

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

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

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

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

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

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

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

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

[15] Univ London Queen Mary & Westfield Coll, 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, Phys Nucl Lab, Montreal, 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, Int Ctr Elementary Particle Phys, Tokyo 113, Japan

[26] Univ Tokyo, Dept Phys, Tokyo 113, Japan

[27] Kobe Univ, Kobe, Hyogo 657, 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 Alberta, Dept Phys, Edmonton, AB T6G 2J1, Canada

[33] Duke Univ, Dept Phys, Durham, NC 27708 USA

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

[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 USA

来源：

PHYSICS LETTERS B | 1998年 / 433卷 / 1-2期

关键词：

D O I：

10.1016/S0370-2693(98)00518-8

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A search for stable and long-lived massive particles of electric charge \Q/e\ = 1 or 2/3, pair-produced in e(+)e(-) collisions at centre-of-mass energies from 130 to 183 GeV, is reported by the OPAL collaboration at LEP. No evidence for production of these particles was observed in a mass range between 45 and 89.5 GeV. Model-independent upper limits on the production cross-section between 0.05 and 0.19 pb have been derived for scalar and spin-1/2 particles with charge +/- 1. Within the framework of the minimal supersymmetric model (MSSM), this implies a lower limit of 82.5 (83.5) GeV on the mass of long-lived right- (left-)handed scalar muons and scalar taus. Long-lived charged leptons and charginos are excluded for masses below 89.5 GeV. For particles with charge +/- 2/3 the upper limits on the production cross-section vary between 0.05 and 0.2 pb. All limits, on masses and on cross-sections, are valid at the 95% confidence level for particles with lifetimes longer than 10(-6) s. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：195 / 208

页数：14

共 41 条

[1] A SEARCH FOR SLEPTONS AND GAUGINOS IN Z0 DECAYS [J].

Abreu, P ;

Adam, W ;

Adami, F ;

Adye, T ;

Alexeev, GD ;

Allaby, JV ;

Allen, P ;

Almehed, S ;

Alted, F ;

Alvsvaag, SJ ;

Amaldi, U ;

Anassontzis, E ;

Apel, WD ;

Asman, B ;

Ferreres, CA ;

Augustin, JE ;

Augustinus, A ;

Baillon, P ;

Bambade, P ;

Barao, F ;

Barbiellini, G ;

Bardin, DY ;

Baroncelli, A ;

Barring, O ;

Bartl, W ;

Bates, MJ ;

Baubillier, M ;

Becks, KH ;

Beeston, CJ ;

Beilliere, P ;

Belokopytov, I ;

Beltran, P ;

Benedic, D ;

Benlloch, JM ;

Berggren, M ;

Bertrand, D ;

Biagi, S ;

Bianchi, F ;

Bibby, JH ;

Bilenky, MS ;

Billoir, P ;

Bjarne, J ;

Bloch, D ;

Bogolubov, PN ;

Bollini, D ;

Bolognese, T ;

Bonapart, M ;

Booth, PSL ;

Boratav, M ;

Borgeaud, P .

PHYSICS LETTERS B, 1990, 247 (01) :157-166

[2] Search for stable heavy charged particles in e(+)e(-) collisions at root s=130-136, 161 and 172 GeV [J].

Abreu, P ;

Adam, W ;

Adye, T ;

Ajinenko, I ;

Alekseev, GD ;

Alemany, R ;

Allport, PP ;

Almehed, S ;

Amaldi, U ;

Amato, S ;

Andreazza, A ;

Andrieux, ML ;

Antilogus, P ;

Apel, WD ;

Asman, B ;

Augustin, JE ;

Augustinus, A ;

Baillon, P ;

Bambade, P ;

Barao, F ;

Barbi, M ;

Barbiellini, G ;

Bardin, DY ;

Barker, G ;

Baroncelli, A ;

Barring, O ;

Barrio, JA ;

Bartl, W ;

Bates, MJ ;

Battaglia, M ;

Baubillier, M ;

Baudot, J ;

Becks, KH ;

Begalli, M ;

Beilliere, P ;

Belokopytov, Y ;

Belous, K ;

Benvenuti, AC ;

Berggren, M ;

Bertini, D ;

Bertrand, D ;

Besancon, M ;

Bianchi, F ;

Bigi, M ;

Bilenky, MS ;

Billoir, P ;

Bizouard, MA ;

Bloch, D ;

Blume, M ;

Bolognese, T .

PHYSICS LETTERS B, 1997, 396 (1-4) :315-326

[3] Production of fermion-pair events in e(+)e(-) collisions at 161 GeV centre-of-mass energy [J].

Ackerstaff, K ;

Alexander, G ;

Allison, J ;

Altekamp, N ;

Ametewee, K ;

Anderson, KJ ;

Anderson, S ;

Arcelli, S ;

Asai, S ;

Axen, D ;

Azuelos, G ;

Ball, AH ;

Barberio, E ;

Barlow, RJ ;

Bartoldus, R ;

Batley, JR ;

Bechtluft, J ;

Beeston, C ;

Behnke, T ;

Bell, AN ;

Bell, KW ;

Bella, G ;

Bentvelsen, S ;

Berlich, P ;

Bethke, S ;

Biebel, O ;

Blobel, V ;

Bloodworth, IJ ;

Bloomer, JE ;

Bobinski, M ;

Bock, P ;

Bosch, HM ;

Boutemeur, M ;

Bouwens, BT ;

Braibant, S ;

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 ;

Conboy, JE ;

Cooke, OC .

PHYSICS LETTERS B, 1997, 391 (1-2) :221-234

[4] Search for charged scalar leptons using the OPAL detector at root s=161 GeV [J].

Ackerstaff, K ;

Alexander, G ;

Allison, J ;

Altekamp, N ;

Ametewee, K ;

Anderson, KJ ;

Anderson, S ;

Arcelli, S ;

Asai, S ;

Axen, D ;

Azuelos, G ;

Ball, AH ;

Barberio, E ;

Barlow, RJ ;

Bartoldus, R ;

Batley, JR ;

Bechtluft, J ;

Beeston, C ;

Behnke, T ;

Bell, AN ;

Bell, KW ;

Bella, G ;

Bentvelsen, S ;

Berlich, P ;

Bethke, S ;

Biebel, O ;

Biguzzi, A ;

Blobel, V ;

Bloodworth, IJ ;

Bloomer, JE ;

Bobinski, M ;

Bock, P ;

Bosch, HM ;

Boutemeur, M ;

Bouwens, BT ;

Braibant, S ;

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 ;

Conboy, JE .

PHYSICS LETTERS B, 1997, 396 (1-4) :301-314

[5]

AHMET K, 1991, NUCL INSTRUM METH A, V305, P275

[6]

AHMET K, 1990, PHYS LETT B, V252, P290

[7] MODEL-INDEPENDENT MEASUREMENT OF OMEGA-]ETA-GAMMA DECAY BRANCHING RATIO [J].

ALDE, D ;

BINON, FG ;

BOUTEMEUR, M ;

BRICMAN, C ;

DONSKOV, SV ;

GOUANERE, M ;

INYAKIN, AV ;

KACHANOV, VA ;

KHAUSTOV, GV ;

KNAPP, EA ;

KONDASHOV, AA ;

KULIK, AV ;

LANDSBERG, GL ;

LEDNEV, AA ;

LISHIN, VA ;

PEIGNEUX, JP ;

POLOVNIKOV, SA ;

POLYAKOV, VA ;

POULET, M ;

PROKOSHKIN, YD ;

SADOVSKY, SA ;

SAMOYLENKO, VD ;

SHAGIN, PM ;

SHTANNIKOV, AV ;

SINGOVSKY, AV ;

STROOT, JP ;

SUGONYAEV, VP .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1994, 61 (01) :35-40

[8] IS THE CHANNEL H-]B(B)OVER-BAR OBSERVABLE AT LHC [J].

FROIDEVAUX, D ;

RICHTERWAS, E .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1995, 67 (02) :213-225

[9] SEARCH FOR THE MINIMAL STANDARD MODEL HIGGS BOSON IN E+E- COLLISIONS AT LEP [J].

AKRAWY, MZ .

PHYSICS LETTERS B, 1991, 253 (3-4) :511-523

[10] Search for neutral higgs bosons in Z(0) decays using the OPAL detector at LEP [J].

Alexander, G ;

Allison, J ;

Altekamp, N ;

Ametewee, K ;

Anderson, KJ ;

Anderson, S ;

Arcelli, S ;

Asai, S ;

Axen, D ;

Azuelos, G ;

Ball, AH ;

Barberio, E ;

Barlow, RJ ;

Bartoldus, R ;

Batley, JR ;

Bechtluft, J ;

Beeston, C ;

Behnke, T ;

Bell, AN ;

Bell, KW ;

Bella, G ;

Bentvelsen, S ;

Berlich, P ;

Bethke, S ;

Biebel, O ;

Blobel, V ;

Bloodworth, IJ ;

Bloomer, JE ;

Bobinski, M ;

Bock, P ;

Bosch, HM ;

Boutemeur, M ;

Bouwens, BT ;

Braibant, S ;

Brown, RM ;

Burckhart, HJ ;

Burgard, C ;

Burgin, R ;

Capiluppi, P ;

Carnegie, RK ;

Carter, AA ;

Carter, JR ;

Chang, CY ;

Charlesworth, C ;

Charlton, DG ;

Chrisman, D ;

Chu, SL ;

Clarke, PEL ;

Cohen, I ;

Conboy, JE .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1997, 73 (02) :189-199

← 1 2 3 4 5 →