Search for charginos with a small mass difference to the lightest supersymmetric particle at √s = 189 GeV

L3 Collaboration

doi:10.1016/S0370-2693(00)00488-3

Search for charginos with a small mass difference to the lightest supersymmetric particle at √s = 189 GeV

L3 Collaboration

Physics

National Institute for Nuclear Physics
University of Geneva
University of Florence
CIEMAT
University of Lausanne
CERN
Swiss Federal Institute of Technology Zurich
Louisiana State University
Nuclear Physics Institute
University of Bucharest
University of Bologna
Alikhanov Institute for Theoretical and Experimental Physics
University of Michigan, Ann Arbor
Tata Institute of Fundamental Research
University of Rome La Sapienza
University of Alabama
IN2P3-CNRS
Paul Scherrer Institute
University of Perugia
Massachusetts Institute of Technology
Carnegie Mellon University
University of Amsterdam
RWTH Aachen University
Hungarian Academy of Sciences

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

21 Scopus citations

Abstract

A search for charginos nearly mass-degenerate with the lightest supersymmetric particle is performed using the 176 pb^-1 of data collected at 189 GeV in 1998 with the L3 detector. Mass differences between the chargino and the lightest supersymmetric particle below 4 GeV are considered. The presence of a high transverse momentum photon is required to single out the signal from the photon-photon interaction background. No evidence for charginos is found and upper limits on the cross section for chargino pair production are set. For the first time at LEP2, in the case of heavy scalar leptons, chargino mass limits are obtained for any X₁± - X₁/⁰ mass difference.

Original language	English
Pages (from-to)	31-42
Number of pages	12
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	482
Issue number	1-3
DOIs	https://doi.org/10.1016/S0370-2693(00)00488-3
State	Published - Jun 1 2000

Access to Document

10.1016/S0370-2693(00)00488-3

Cite this

@article{2448caca94a94f82b88662799296dd9e,

title = "Search for charginos with a small mass difference to the lightest supersymmetric particle at √s = 189 GeV",

abstract = "A search for charginos nearly mass-degenerate with the lightest supersymmetric particle is performed using the 176 pb-1 of data collected at 189 GeV in 1998 with the L3 detector. Mass differences between the chargino and the lightest supersymmetric particle below 4 GeV are considered. The presence of a high transverse momentum photon is required to single out the signal from the photon-photon interaction background. No evidence for charginos is found and upper limits on the cross section for chargino pair production are set. For the first time at LEP2, in the case of heavy scalar leptons, chargino mass limits are obtained for any X1± - X1/0 mass difference.",

author = "\{L3 Collaboration\} and M. Acciarri and P. Achard and O. Adriani and M. Aguilar-Benitez and J. Alcaraz and G. Alemanni and J. Allaby and A. Aloisio and Alviggi, \{M. G.\} and G. Ambrosi and H. Anderhub and Andreev, \{V. P.\} and T. Angelescu and F. Anselmo and A. Arefiev and T. Azemoon and T. Aziz and P. Bagnaia and L. Baksay and A. Balandras and Ball, \{R. C.\} and S. Banerjee and Sw Banerjee and A. Barczyk and R. Barill{\`e}re and L. Barone and P. Bartalini and M. Basile and R. Battiston and A. Bay and F. Becattini and U. Becker and F. Behner and L. Bellucci and J. Berdugo and P. Berges and B. Bertucci and Betev, \{B. L.\} and S. Bhattacharya and M. Biasini and A. Biland and Blaising, \{J. J.\} and Blyth, \{S. C.\} and Bobbink, \{G. J.\} and A. B{\"o}hm and L. Boldizsar and B. Borgia and D. Bourilkov and M. Bourquin and I. Iashvili",

year = "2000",

month = jun,

day = "1",

doi = "10.1016/S0370-2693(00)00488-3",

language = "English",

volume = "482",

pages = "31--42",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier B.V.",

number = "1-3",

}

TY - JOUR

T1 - Search for charginos with a small mass difference to the lightest supersymmetric particle at √s = 189 GeV

AU - L3 Collaboration

AU - Acciarri, M.

AU - Achard, P.

AU - Adriani, O.

AU - Aguilar-Benitez, M.

AU - Alcaraz, J.

AU - Alemanni, G.

AU - Allaby, J.

AU - Aloisio, A.

AU - Alviggi, M. G.

AU - Ambrosi, G.

AU - Anderhub, H.

AU - Andreev, V. P.

AU - Angelescu, T.

AU - Anselmo, F.

AU - Arefiev, A.

AU - Azemoon, T.

AU - Aziz, T.

AU - Bagnaia, P.

AU - Baksay, L.

AU - Balandras, A.

AU - Ball, R. C.

AU - Banerjee, S.

AU - Banerjee, Sw

AU - Barczyk, A.

AU - Barillère, R.

AU - Barone, L.

AU - Bartalini, P.

AU - Basile, M.

AU - Battiston, R.

AU - Bay, A.

AU - Becattini, F.

AU - Becker, U.

AU - Behner, F.

AU - Bellucci, L.

AU - Berdugo, J.

AU - Berges, P.

AU - Bertucci, B.

AU - Betev, B. L.

AU - Bhattacharya, S.

AU - Biasini, M.

AU - Biland, A.

AU - Blaising, J. J.

AU - Blyth, S. C.

AU - Bobbink, G. J.

AU - Böhm, A.

AU - Boldizsar, L.

AU - Borgia, B.

AU - Bourilkov, D.

AU - Bourquin, M.

AU - Iashvili, I.

PY - 2000/6/1

Y1 - 2000/6/1

N2 - A search for charginos nearly mass-degenerate with the lightest supersymmetric particle is performed using the 176 pb-1 of data collected at 189 GeV in 1998 with the L3 detector. Mass differences between the chargino and the lightest supersymmetric particle below 4 GeV are considered. The presence of a high transverse momentum photon is required to single out the signal from the photon-photon interaction background. No evidence for charginos is found and upper limits on the cross section for chargino pair production are set. For the first time at LEP2, in the case of heavy scalar leptons, chargino mass limits are obtained for any X1± - X1/0 mass difference.

AB - A search for charginos nearly mass-degenerate with the lightest supersymmetric particle is performed using the 176 pb-1 of data collected at 189 GeV in 1998 with the L3 detector. Mass differences between the chargino and the lightest supersymmetric particle below 4 GeV are considered. The presence of a high transverse momentum photon is required to single out the signal from the photon-photon interaction background. No evidence for charginos is found and upper limits on the cross section for chargino pair production are set. For the first time at LEP2, in the case of heavy scalar leptons, chargino mass limits are obtained for any X1± - X1/0 mass difference.

UR - https://www.scopus.com/pages/publications/0034209407

U2 - 10.1016/S0370-2693(00)00488-3

DO - 10.1016/S0370-2693(00)00488-3

M3 - Article

AN - SCOPUS:0034209407

SN - 0370-2693

VL - 482

SP - 31

EP - 42

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 1-3

ER -

Search for charginos with a small mass difference to the lightest supersymmetric particle at √s = 189 GeV

Abstract

Access to Document

Other files and links

Fingerprint

Cite this