Search for anomalous production of di-lepton events with missing transverse momentum in e+e- collisions at √s = 161 and 172 GeV

被引：23

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] Univ Birmingham, Sch Phys & Space Res, Birmingham B15 2TT, W Midlands, England

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

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

[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] Univ London Univ Coll, 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, 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, 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] 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 Munchen, 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：

EUROPEAN PHYSICAL JOURNAL C | 1998年 / 4卷 / 01期

关键词：

D O I：

10.1007/s100520050185

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：

Events containing two charged leptons and significant missing transverse momentum are Selected from a data sample corresponding to a total integrated luminosity of 20.6 pb(-1) at centre-of-mass energies of 161 GeV and 172 GeV. The observed number of events, four at 161 GeV and nine at 172 GeV, is consistent with the number expected from Standard Model processes, predominantly arising from W+W- production with each W decaying leptonically. This topology is also an experimental signature for the pair production of new particles that decay to a charged lepton accompanied by one or more invisible particles. Further event selection criteria are described that optimise the sensitivity to particular new physics channels. No evidence for new phenomena is observed and limits on the production of scaler charged lepton pairs and other new particles are presented.

引用

页码：47 / 74

页数：28

共 35 条

[1] Search for chargino and neutralino production in e(+)e(-) collisions at root s=161 GeV
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
[J]. PHYSICS LETTERS B, 1996, 389 (03) : 616 - 630
[2] Measurement of the mass of the W boson in e(+)e(-) collisions at root s=161 GeV
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
[J]. PHYSICS LETTERS B, 1996, 389 (02) : 416 - 428
[3] Ackerstaff K, 1998, EUR PHYS J C, V1, P395, DOI 10.1007/s100520050093
[4] Search for charged scalar leptons using the OPAL detector at root s=161 GeV
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
[J]. PHYSICS LETTERS B, 1997, 396 (1-4) : 301 - 314
[5] ACKERSTAFF K, UNPUB EUR PHYS J C
[6] ACTON PD, 1993, Z PHYS C PART FIELDS, V58, P523
[7] RESULTS FROM THE L3 EXPERIMENT AT LEP
ADRIANI, O
AGUILARBENITEZ, M
AHLEN, S
ALCARAZ, J
ALOISIO, A
ALVERSON, G
ALVIGGI, MG
AMBROSI, G
AN, Q
ANDERHUB, H
ANDERSON, AL
ANDREEV, VP
ANTONOV, L
ANTREASYAN, D
ARCE, P
AREFIEV, A
ATAMANCHUK, A
AZEMOON, T
AZIZ, T
BABA, PVKS
BAGNAIA, P
BAKKEN, JA
BAKSAY, L
BALL, RC
BANERJEE, S
BAO, J
BARILLERE, R
BARONE, L
BASCHIROTTO, A
BATTISTON, R
BAY, A
BECATTINI, F
BECKER, U
BEHNER, F
BEHRENS, J
BENCZE, GL
BERDUGO, J
BERGES, P
BERTUCCI, B
BETEV, BL
BIASINI, M
BILAND, A
BILEI, GM
BIZZARRI, R
BLAISING, JJ
BOBBINK, GJ
BOCK, R
BOHM, A
BORGIA, B
BOSETTI, M
[J]. PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1993, 236 (1-2): : 1 - 146
[8] AHMET K, 1991, NUCL INSTRUM METH A, V305, P275
[9] MODEL-INDEPENDENT MEASUREMENT OF OMEGA-]ETA-GAMMA DECAY BRANCHING RATIO
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
[J]. ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1994, 61 (01): : 35 - 40
[10] AKERS R, 1994, Z PHYS C PART FIELDS, V63, P197, DOI 10.1007/BF01411011

← 1 2 3 4 →