Search for gluinos and squarks using like-sign dileptons in pp¯ collisions at √s = 1.8 TeV

CDF Collaboration

doi:10.1103/PhysRevLett.87.251803

Search for gluinos and squarks using like-sign dileptons in pp¯ collisions at √s = 1.8 TeV

CDF Collaboration

Department of Physics

Lawrence Berkeley National Laboratory
Waseda University
Rockefeller University
Fermi National Accelerator Laboratory
The University of Chicago
University of Michigan, Ann Arbor
Massachusetts Institute of Technology
Academia Sinica - Institute of Physics
Joint Institute for Nuclear Research
University of Tsukuba
University of Oxford
University of Padua
Harvard University
University of Rochester
Purdue University
Johns Hopkins University
University of California at Davis
National Institute for Nuclear Physics
Scuola Normale Superiore di Pisa
University of Trieste
University of Glasgow
University of Wisconsin-Madison
Duke University
Brandeis University
Argonne National Laboratory
University of Pennsylvania
University of California at Los Angeles

Research output: Contribution to journal › Article › peer-review

Abstract

We present results of the first search for like-sign dilepton (e^±e^±, e^±μ^±, μ^±μ^±) events associated with multijets and large missing energy using 106pb⁻¹ of data in pp¯ collisions at √s = 1.8 TeV collected during 1992-1995 by the CDF experiment. Finding no events that pass our selection, we examine pair production of gluinos (^∼g) and squarks (^∼q) in a constrained framework of the minimal supersymmetric standard model. At tan β = 2 and μ = −800 GeV/c², we set 95% confidence level limits of M_g > 221 GeV/c² for M_g ≃ M_q, and M_g > 168 GeV/c² for M_q ≫ M_g, both with small variation as a function of μ.

Original language	English
Pages (from-to)	251803-1-251803-6
Journal	Physical Review Letters
Volume	87
Issue number	25
DOIs	https://doi.org/10.1103/PhysRevLett.87.251803
State	Published - 17 Dec 2001

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10.1103/PhysRevLett.87.251803

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@article{608061638ac94764a2114c94b46e28e1,

title = "Search for gluinos and squarks using like-sign dileptons in pp¯ collisions at √s = 1.8 TeV",

abstract = "We present results of the first search for like-sign dilepton (e±e±, e±μ±, μ±μ±) events associated with multijets and large missing energy using 106pb−1 of data in pp¯ collisions at √s = 1.8 TeV collected during 1992-1995 by the CDF experiment. Finding no events that pass our selection, we examine pair production of gluinos (∼g) and squarks (∼q) in a constrained framework of the minimal supersymmetric standard model. At tan β = 2 and μ = −800 GeV/c2, we set 95\% confidence level limits of Mg > 221 GeV/c2 for Mg ≃ Mq, and Mg > 168 GeV/c2 for Mq ≫ Mg, both with small variation as a function of μ.",

author = "\{CDF Collaboration\} and T. Affolder and H. Akimoto and A. Akopian and Albrow, \{M. G.\} and P. Amaral and D. Amidei and K. Anikeev and J. Antos and G. Apollinari and T. Arisawa and A. Artikov and T. Asakawa and W. Ashmanskas and F. Azfar and P. Azzi-Bacchetta and N. Bacchetta and H. Bachacou and S. Bailey and \{De Barbaro\}, P. and A. Barbaro-Galtieri and Barnes, \{V. E.\} and Barnett, \{B. A.\} and S. Baroiant and M. Barone and G. Bauer and F. Bedeschi and S. Belforte and Bell, \{W. H.\} and G. Bellettini and J. Bellinger and D. Benjamin and J. Bensinger and A. Beretvas and Berge, \{J. P.\} and J. Berryhill and A. Bhatti and M. Binkley and D. Bisello and M. Bishai and Blair, \{R. E.\} and C. Blocker and K. Bloom and B. Blumenfeld and Blusk, \{S. R.\} and A. Bocci and A. Bodek and W. Bokhari and G. Bolla and Y. Bonushkin and I. Yu",

year = "2001",

month = dec,

day = "17",

doi = "10.1103/PhysRevLett.87.251803",

language = "English",

volume = "87",

pages = "251803--1--251803--6",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "25",

}

TY - JOUR

T1 - Search for gluinos and squarks using like-sign dileptons in pp¯ collisions at √s = 1.8 TeV

AU - CDF Collaboration

AU - Affolder, T.

AU - Akimoto, H.

AU - Akopian, A.

AU - Albrow, M. G.

AU - Amaral, P.

AU - Amidei, D.

AU - Anikeev, K.

AU - Antos, J.

AU - Apollinari, G.

AU - Arisawa, T.

AU - Artikov, A.

AU - Asakawa, T.

AU - Ashmanskas, W.

AU - Azfar, F.

AU - Azzi-Bacchetta, P.

AU - Bacchetta, N.

AU - Bachacou, H.

AU - Bailey, S.

AU - De Barbaro, P.

AU - Barbaro-Galtieri, A.

AU - Barnes, V. E.

AU - Barnett, B. A.

AU - Baroiant, S.

AU - Barone, M.

AU - Bauer, G.

AU - Bedeschi, F.

AU - Belforte, S.

AU - Bell, W. H.

AU - Bellettini, G.

AU - Bellinger, J.

AU - Benjamin, D.

AU - Bensinger, J.

AU - Beretvas, A.

AU - Berge, J. P.

AU - Berryhill, J.

AU - Bhatti, A.

AU - Binkley, M.

AU - Bisello, D.

AU - Bishai, M.

AU - Blair, R. E.

AU - Blocker, C.

AU - Bloom, K.

AU - Blumenfeld, B.

AU - Blusk, S. R.

AU - Bocci, A.

AU - Bodek, A.

AU - Bokhari, W.

AU - Bolla, G.

AU - Bonushkin, Y.

AU - Yu, I.

PY - 2001/12/17

Y1 - 2001/12/17

N2 - We present results of the first search for like-sign dilepton (e±e±, e±μ±, μ±μ±) events associated with multijets and large missing energy using 106pb−1 of data in pp¯ collisions at √s = 1.8 TeV collected during 1992-1995 by the CDF experiment. Finding no events that pass our selection, we examine pair production of gluinos (∼g) and squarks (∼q) in a constrained framework of the minimal supersymmetric standard model. At tan β = 2 and μ = −800 GeV/c2, we set 95% confidence level limits of Mg > 221 GeV/c2 for Mg ≃ Mq, and Mg > 168 GeV/c2 for Mq ≫ Mg, both with small variation as a function of μ.

AB - We present results of the first search for like-sign dilepton (e±e±, e±μ±, μ±μ±) events associated with multijets and large missing energy using 106pb−1 of data in pp¯ collisions at √s = 1.8 TeV collected during 1992-1995 by the CDF experiment. Finding no events that pass our selection, we examine pair production of gluinos (∼g) and squarks (∼q) in a constrained framework of the minimal supersymmetric standard model. At tan β = 2 and μ = −800 GeV/c2, we set 95% confidence level limits of Mg > 221 GeV/c2 for Mg ≃ Mq, and Mg > 168 GeV/c2 for Mq ≫ Mg, both with small variation as a function of μ.

UR - https://www.scopus.com/pages/publications/85037208522

U2 - 10.1103/PhysRevLett.87.251803

DO - 10.1103/PhysRevLett.87.251803

M3 - Article

AN - SCOPUS:85037208522

SN - 0031-9007

VL - 87

SP - 251803-1-251803-6

JO - Physical Review Letters

JF - Physical Review Letters

IS - 25

ER -

Search for gluinos and squarks using like-sign dileptons in pp¯ collisions at √s = 1.8 TeV

Abstract

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