Search for the lightest chargino at root s=130 and 136 GeV

被引：26

作者：

Abreu, P

Adam, W

Adye, T

Agasi, E

Ajinenko, I

Aleksan, R

Alekseev, GD

Alemany, R

Allport, PP

Almehed, S

Amaldi, U

Amato, S

Andreazza, A

Andrieux, ML

Antilogus, P

Apel, WD

Arnoud, Y

Asman, B

Augustin, JE

Augustinus, A

Baillon, P

Bambade, P

Barao, F

Barate, R

Barbi, M

Bardin, DY

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

Bianchi, F

Bigi, M

Bilenky, MS

Billoir, P

Bloch, D

Blume, M

Bolognese, T

机构：

[1] UNIV LIVERPOOL, DEPT PHYS, LIVERPOOL L69 3BX, MERSEYSIDE, ENGLAND

[2] UNIV PARIS 06, CNRS, IN2P3, F-75252 PARIS 05, FRANCE

[3] UNIV PARIS 07, CNRS, IN2P3, F-75252 PARIS 05, FRANCE

[4] LUND UNIV, DEPT PHYS, S-22363 LUND, SWEDEN

[5] UNIV LYON 1, IPNL, IN2P3, CNRS, F-69622 VILLEURBANNE, FRANCE

[6] UNIV COMPLUTENSE, E-28040 MADRID, SPAIN

[7] UNIV AIX MARSEILLE 2, CPP, IN2P3, CNRS, F-13288 MARSEILLE 09, FRANCE

[8] UNIV MILAN, DIPARTIMENTO FIS, I-20133 MILAN, ITALY

[9] IST NAZL FIS NUCL, I-20133 MILAN, ITALY

[10] NIELS BOHR INST, DK-2100 COPENHAGEN O, DENMARK

[11] CHARLES UNIV, MFF, NC, NUCL CTR, CR-18000 PRAGUE 8, CZECH REPUBLIC

[12] NIKHEF H, NL-1009 DB AMSTERDAM, NETHERLANDS

[13] NATL TECH UNIV ATHENS, DEPT PHYS, GR-15773 ATHENS, GREECE

[14] UNIV OSLO, DEPT PHYS, N-1000 OSLO 3, NORWAY

[15] UNIV OVIEDO, DEPT FIS, OVIEDO 33006, SPAIN

[16] UNIV OXFORD, DEPT PHYS, OXFORD OX1 3RH, ENGLAND

[17] UNIV PADUA, DIPARTIMENTO FIS, I-35131 PADUA, ITALY

[18] IST NAZL FIS NUCL, I-35131 PADUA, ITALY

[19] RUTHERFORD APPLETON LAB, DIDCOT OX11 0QX, OXON, ENGLAND

[20] UNIV ROMA TOR VERGATA, DIPARTIMENTO FIS, I-00173 ROME, ITALY

[21] IST NAZL FIS NUCL, I-00173 ROME, ITALY

[22] CENS, DAPNIA, SERV PHYS PARTICULES, CEA, F-91191 GIF SUR YVETTE, FRANCE

[23] IST SUPER SANITA, IST NAZL FIS NUCL, I-00161 ROME, ITALY

[24] CSIC, INST FIS CANTABRIA, CICYT, SANTANDER 39006, SPAIN

[25] INST HIGH ENERGY PHYS, PROTVINO, RUSSIA

[26] UNIV LJUBLJANA, JOZEF STEFAN INST, SL-61000 LJUBLJANA, SLOVENIA

[27] UNIV LJUBLJANA, DEPT PHYS, SL-61000 LJUBLJANA, SLOVENIA

[28] UNIV STOCKHOLM, FYSIKUM, S-11385 STOCKHOLM, SWEDEN

[29] UNIV TURIN, DIPARTIMENTO FIS SPERIMENTALE, I-10125 TURIN, ITALY

[30] IST NAZL FIS NUCL, I-10125 TURIN, ITALY

[31] UNIV TRIESTE, DIPARTMENTO FIS, I-34127 TRIESTE, ITALY

[32] IST NAZL FIS NUCL, I-34127 TRIESTE, ITALY

[33] UNIV UDINE, IST FIS, I-33100 UDINE, ITALY

[34] UNIV FED RIO DE JANEIRO, BR-21945970 RIO DE JANEIRO, BRAZIL

[35] UNIV UPPSALA, DEPT RADIAT SCI, S-75121 UPPSALA, SWEDEN

[36] UNIV VALENCIA, DFAMN, E-46100 BURJASSOT, VALENCIA, SPAIN

[37] CSIC, IFIC, E-46100 BURJASSOT, VALENCIA, SPAIN

[38] AUSTRIAN ACAD SCI, INST HOCHENERGIEPHYS, A-1050 VIENNA, AUSTRIA

[39] INST NUCL STUDIES, PL-00681 WARSAW, POLAND

[40] UNIV WARSAW, PL-00681 WARSAW, POLAND

[41] UNIV GESAMTHSCH WUPPERTAL, FACHBEREICH PHYS, D-42097 WUPPERTAL, GERMANY

[42] IOWA STATE UNIV, AMES LAB, AMES, IA 50011 USA

[43] IOWA STATE UNIV, DEPT PHYS, AMES, IA 50011 USA

[44] UNIV INSTELLING ANTWERP, DEPT PHYS, B-2610 Antwerp, BELGIUM

[45] FREE UNIV Brussels, IIHE, B-1050 BRUSSELS, BELGIUM

[46] UNIV MONS, FAC SCI, B-7000 MONS, BELGIUM

[47] UNIV ATHENS, PHYS LAB, GR-10680 ATHENS, GREECE

[48] UNIV BERGEN, DEPT PHYS, N-5007 BERGEN, NORWAY

[49] UNIV BOLOGNA, DIPARTMENTO FIS, I-40126 BOLOGNA, ITALY

[50] IST NAZL FIS NUCL, I-40126 BOLOGNA, ITALY

来源：

PHYSICS LETTERS B | 1996年 / 382卷 / 03期

关键词：

D O I：

10.1016/0370-2693(96)00769-1

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A search for pair production of the lightest chargino at root-s = 130.4 and 136.3 GeV has been carried out using the data sample corresponding to the 5.92 pb(-1) recorded by the DELPHI detector during the high energy run of LEP in the last period of 1995. The theoretical reference model has been the Minimal Supersymmetric Standard Model with R-parity conservation. The three topologies expected for the decay of a pair of charginos, namely two acoplanar leptons plus missing energy (ll), two jets and an isolated lepton plus missing (jjl) and missing energy in a hadronic environment (root-s), were investigated. No evidence of a signal was found. Lower mass limits were derived for various scenarios, including the case of a low mass difference between the chargino and the neutralino and of a light sneutrino. The mass limits range between 56.3 GeV/c(2) and the kinetic limit.

引用

页码：323 / 336

页数：14

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