Search for charginos and neutralinos in e+e- collisions at centre-of-mass energies near 183 GeV and constraints on the MSSM parameter space

R. Barate; D. Decamp; P. Ghez; C. Goy; S. Jezequel; J. P. Lees; F. Martin; E. Merle; M. N. Minard; J. Y. Nief; B. Pietrzyk; R. Alemany; M. P. Casado; M. Chmeissani; J. M. Crespo; M. Delfino; E. Fernandez; M. Fernandez-Bosman; L. Garrido; E. Graugès; A. Juste; M. Martinez; G. Merino; R. Miquel; L. M. Mir; P. Morawitz; A. Pacheco; I. C. Park; A. Pascual; I. Riu; F. Sanchez; A. Colaleo; D. Creanza; M. de Palma; G. Gelao; G. Iaselli; G. Maggi; M. Maggi; S. Nuzzo; A. Ranieri; G. Raso; F. Ruggieri; G. Selvaggi; L. Silvestris; P. Tempesta; A. Tricomi; G. Zito; X. Huang; J. Lin; Q. Ouyang; T. Wang; Y. Xie; R. Xu; S. Xue; J. Zhang; L. Zhang; W. Zhao; D. Abbaneo; U. Becker; G. Boix; M. Cattaneo; V. Ciulli; G. Dissertori; H. Drevermann; R. W. Forty; M. Frank; F. Gianotti; A. W. Halley; J. B. Hansen; J. Harvey; P. Janot; B. Jost; I. Lehraus; O. Leroy; C. Loomis; P. Maley; P. Mato; A. Minten; A. Moutoussi; F. Ranjard; L. Rolandi; D. Rousseau; D. Schlatter; M. Schmitt; O. Schneider; W. Tejessy; F. Teubert; I. R. Tomalin; E. Tournefier; M. Vreeswijk; A. E. Wright; Z. Ajaltouni; F. Badaud; G. Chazelle; O. Deschamps; S. Dessagne; A. Falvard; C. Ferdi; P. Gay; C. Guicheney

Search for charginos and neutralinos in e⁺e^- collisions at centre-of-mass energies near 183 GeV and constraints on the MSSM parameter space

R. Barate, D. Decamp, P. Ghez, C. Goy, S. Jezequel, J. P. Lees, F. Martin, E. Merle, M. N. Minard, J. Y. Nief, B. Pietrzyk, R. Alemany, M. P. Casado, M. Chmeissani, J. M. Crespo, M. Delfino, E. Fernandez, M. Fernandez-Bosman, L. Garrido, E. GraugèsA. Juste, M. Martinez, G. Merino, R. Miquel, L. M. Mir, P. Morawitz, A. Pacheco, I. C. Park, A. Pascual, I. Riu, F. Sanchez, A. Colaleo, D. Creanza, M. de Palma, G. Gelao, G. Iaselli, G. Maggi, M. Maggi, S. Nuzzo, A. Ranieri, G. Raso, F. Ruggieri, G. Selvaggi, L. Silvestris, P. Tempesta, A. Tricomi, G. Zito, X. Huang, J. Lin, Q. Ouyang, T. Wang, Y. Xie, R. Xu, S. Xue, J. Zhang, L. Zhang, W. Zhao, D. Abbaneo, U. Becker, G. Boix, M. Cattaneo, V. Ciulli, G. Dissertori, H. Drevermann, R. W. Forty, M. Frank, F. Gianotti, A. W. Halley, J. B. Hansen, J. Harvey, P. Janot, B. Jost, I. Lehraus, O. Leroy, C. Loomis, P. Maley, P. Mato, A. Minten, A. Moutoussi, F. Ranjard, L. Rolandi, D. Rousseau, D. Schlatter, M. Schmitt, O. Schneider, W. Tejessy, F. Teubert, I. R. Tomalin, E. Tournefier, M. Vreeswijk, A. E. Wright, Z. Ajaltouni, F. Badaud, G. Chazelle, O. Deschamps, S. Dessagne, A. Falvard, C. Ferdi, P. Gay, C. Guicheney

Department of Physics

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

21 Citations (Scopus)

Abstract

Searches for charginos and neutralinos are performed with the data collected by the ALEPH detector at LEP at centre-of-mass energies near 183 GeV. In these searches, it is assumed that R-parity is conserved and that the lightest neutralino is the LSP. No evidence of a signal is observed in the 57 pb-1 accumulated, which excludes chargino and associated neutralino production up to the kinematic limit over large regions of the MSSM parameter space. Under the assumptions of common gaugino and common sfermion masses at the unification scale, the interplay between the chargino, neutralino and slepton exclusion limits allows a lower bound of 27 GeV/c2 to be set on the mass of the lightest neutralino. Tighter constraints on the MSSM parameter space are obtained using in addition exclusions in the Higgs sector. Finally, the results are interpreted within the framework of minimal supergravity.

Original language	English
Pages (from-to)	193-216
Journal	European Physical Journal C
Volume	11
Issue number	2
Publication status	Published - 1 Jan 1999

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Barate, R., Decamp, D., Ghez, P., Goy, C., Jezequel, S., Lees, J. P., Martin, F., Merle, E., Minard, M. N., Nief, J. Y., Pietrzyk, B., Alemany, R., Casado, M. P., Chmeissani, M., Crespo, J. M., Delfino, M., Fernandez, E., Fernandez-Bosman, M., Garrido, L., ... Guicheney, C. (1999). Search for charginos and neutralinos in e⁺e^- collisions at centre-of-mass energies near 183 GeV and constraints on the MSSM parameter space. European Physical Journal C, 11(2), 193-216.

Barate, R. ; Decamp, D. ; Ghez, P. ; Goy, C. ; Jezequel, S. ; Lees, J. P. ; Martin, F. ; Merle, E. ; Minard, M. N. ; Nief, J. Y. ; Pietrzyk, B. ; Alemany, R. ; Casado, M. P. ; Chmeissani, M. ; Crespo, J. M. ; Delfino, M. ; Fernandez, E. ; Fernandez-Bosman, M. ; Garrido, L. ; Graugès, E. ; Juste, A. ; Martinez, M. ; Merino, G. ; Miquel, R. ; Mir, L. M. ; Morawitz, P. ; Pacheco, A. ; Park, I. C. ; Pascual, A. ; Riu, I. ; Sanchez, F. ; Colaleo, A. ; Creanza, D. ; de Palma, M. ; Gelao, G. ; Iaselli, G. ; Maggi, G. ; Maggi, M. ; Nuzzo, S. ; Ranieri, A. ; Raso, G. ; Ruggieri, F. ; Selvaggi, G. ; Silvestris, L. ; Tempesta, P. ; Tricomi, A. ; Zito, G. ; Huang, X. ; Lin, J. ; Ouyang, Q. ; Wang, T. ; Xie, Y. ; Xu, R. ; Xue, S. ; Zhang, J. ; Zhang, L. ; Zhao, W. ; Abbaneo, D. ; Becker, U. ; Boix, G. ; Cattaneo, M. ; Ciulli, V. ; Dissertori, G. ; Drevermann, H. ; Forty, R. W. ; Frank, M. ; Gianotti, F. ; Halley, A. W. ; Hansen, J. B. ; Harvey, J. ; Janot, P. ; Jost, B. ; Lehraus, I. ; Leroy, O. ; Loomis, C. ; Maley, P. ; Mato, P. ; Minten, A. ; Moutoussi, A. ; Ranjard, F. ; Rolandi, L. ; Rousseau, D. ; Schlatter, D. ; Schmitt, M. ; Schneider, O. ; Tejessy, W. ; Teubert, F. ; Tomalin, I. R. ; Tournefier, E. ; Vreeswijk, M. ; Wright, A. E. ; Ajaltouni, Z. ; Badaud, F. ; Chazelle, G. ; Deschamps, O. ; Dessagne, S. ; Falvard, A. ; Ferdi, C. ; Gay, P. ; Guicheney, C. / Search for charginos and neutralinos in e⁺e^- collisions at centre-of-mass energies near 183 GeV and constraints on the MSSM parameter space. In: European Physical Journal C. 1999 ; Vol. 11, No. 2. pp. 193-216.

@article{0ca38988fe0240c8b1d5e3cdc38c920b,

title = "Search for charginos and neutralinos in e+e- collisions at centre-of-mass energies near 183 GeV and constraints on the MSSM parameter space",

abstract = "Searches for charginos and neutralinos are performed with the data collected by the ALEPH detector at LEP at centre-of-mass energies near 183 GeV. In these searches, it is assumed that R-parity is conserved and that the lightest neutralino is the LSP. No evidence of a signal is observed in the 57 pb-1 accumulated, which excludes chargino and associated neutralino production up to the kinematic limit over large regions of the MSSM parameter space. Under the assumptions of common gaugino and common sfermion masses at the unification scale, the interplay between the chargino, neutralino and slepton exclusion limits allows a lower bound of 27 GeV/c2 to be set on the mass of the lightest neutralino. Tighter constraints on the MSSM parameter space are obtained using in addition exclusions in the Higgs sector. Finally, the results are interpreted within the framework of minimal supergravity.",

author = "R. Barate and D. Decamp and P. Ghez and C. Goy and S. Jezequel and Lees, {J. P.} and F. Martin and E. Merle and Minard, {M. N.} and Nief, {J. Y.} and B. Pietrzyk and R. Alemany and Casado, {M. P.} and M. Chmeissani and Crespo, {J. M.} and M. Delfino and E. Fernandez and M. Fernandez-Bosman and L. Garrido and E. Graug{\`e}s and A. Juste and M. Martinez and G. Merino and R. Miquel and Mir, {L. M.} and P. Morawitz and A. Pacheco and Park, {I. C.} and A. Pascual and I. Riu and F. Sanchez and A. Colaleo and D. Creanza and {de Palma}, M. and G. Gelao and G. Iaselli and G. Maggi and M. Maggi and S. Nuzzo and A. Ranieri and G. Raso and F. Ruggieri and G. Selvaggi and L. Silvestris and P. Tempesta and A. Tricomi and G. Zito and X. Huang and J. Lin and Q. Ouyang and T. Wang and Y. Xie and R. Xu and S. Xue and J. Zhang and L. Zhang and W. Zhao and D. Abbaneo and U. Becker and G. Boix and M. Cattaneo and V. Ciulli and G. Dissertori and H. Drevermann and Forty, {R. W.} and M. Frank and F. Gianotti and Halley, {A. W.} and Hansen, {J. B.} and J. Harvey and P. Janot and B. Jost and I. Lehraus and O. Leroy and C. Loomis and P. Maley and P. Mato and A. Minten and A. Moutoussi and F. Ranjard and L. Rolandi and D. Rousseau and D. Schlatter and M. Schmitt and O. Schneider and W. Tejessy and F. Teubert and Tomalin, {I. R.} and E. Tournefier and M. Vreeswijk and Wright, {A. E.} and Z. Ajaltouni and F. Badaud and G. Chazelle and O. Deschamps and S. Dessagne and A. Falvard and C. Ferdi and P. Gay and C. Guicheney",

year = "1999",

month = jan,

day = "1",

language = "English",

volume = "11",

pages = "193--216",

journal = "European Physical Journal C",

issn = "1434-6044",

publisher = "Springer New York",

number = "2",

}

Barate, R, Decamp, D, Ghez, P, Goy, C, Jezequel, S, Lees, JP, Martin, F, Merle, E, Minard, MN, Nief, JY, Pietrzyk, B, Alemany, R, Casado, MP, Chmeissani, M, Crespo, JM , Delfino, M, Fernandez, E, Fernandez-Bosman, M, Garrido, L, Graugès, E, Juste, A, Martinez, M, Merino, G, Miquel, R, Mir, LM, Morawitz, P, Pacheco, A, Park, IC, Pascual, A, Riu, I, Sanchez, F, Colaleo, A, Creanza, D, de Palma, M, Gelao, G, Iaselli, G, Maggi, G, Maggi, M, Nuzzo, S, Ranieri, A, Raso, G, Ruggieri, F, Selvaggi, G, Silvestris, L, Tempesta, P, Tricomi, A, Zito, G, Huang, X, Lin, J, Ouyang, Q, Wang, T, Xie, Y, Xu, R, Xue, S, Zhang, J, Zhang, L, Zhao, W, Abbaneo, D, Becker, U, Boix, G, Cattaneo, M, Ciulli, V, Dissertori, G, Drevermann, H, Forty, RW, Frank, M, Gianotti, F, Halley, AW, Hansen, JB, Harvey, J, Janot, P, Jost, B, Lehraus, I, Leroy, O, Loomis, C, Maley, P, Mato, P, Minten, A, Moutoussi, A, Ranjard, F, Rolandi, L, Rousseau, D, Schlatter, D, Schmitt, M, Schneider, O, Tejessy, W, Teubert, F, Tomalin, IR, Tournefier, E, Vreeswijk, M, Wright, AE, Ajaltouni, Z, Badaud, F, Chazelle, G, Deschamps, O, Dessagne, S, Falvard, A, Ferdi, C, Gay, P & Guicheney, C 1999, 'Search for charginos and neutralinos in e⁺e^- collisions at centre-of-mass energies near 183 GeV and constraints on the MSSM parameter space', European Physical Journal C, vol. 11, no. 2, pp. 193-216.

Search for charginos and neutralinos in e⁺e^- collisions at centre-of-mass energies near 183 GeV and constraints on the MSSM parameter space. / Barate, R.; Decamp, D.; Ghez, P.; Goy, C.; Jezequel, S.; Lees, J. P.; Martin, F.; Merle, E.; Minard, M. N.; Nief, J. Y.; Pietrzyk, B.; Alemany, R.; Casado, M. P.; Chmeissani, M.; Crespo, J. M.; Delfino, M.; Fernandez, E.; Fernandez-Bosman, M.; Garrido, L.; Graugès, E.; Juste, A.; Martinez, M.; Merino, G.; Miquel, R.; Mir, L. M.; Morawitz, P.; Pacheco, A.; Park, I. C.; Pascual, A.; Riu, I.; Sanchez, F.; Colaleo, A.; Creanza, D.; de Palma, M.; Gelao, G.; Iaselli, G.; Maggi, G.; Maggi, M.; Nuzzo, S.; Ranieri, A.; Raso, G.; Ruggieri, F.; Selvaggi, G.; Silvestris, L.; Tempesta, P.; Tricomi, A.; Zito, G.; Huang, X.; Lin, J.; Ouyang, Q.; Wang, T.; Xie, Y.; Xu, R.; Xue, S.; Zhang, J.; Zhang, L.; Zhao, W.; Abbaneo, D.; Becker, U.; Boix, G.; Cattaneo, M.; Ciulli, V.; Dissertori, G.; Drevermann, H.; Forty, R. W.; Frank, M.; Gianotti, F.; Halley, A. W.; Hansen, J. B.; Harvey, J.; Janot, P.; Jost, B.; Lehraus, I.; Leroy, O.; Loomis, C.; Maley, P.; Mato, P.; Minten, A.; Moutoussi, A.; Ranjard, F.; Rolandi, L.; Rousseau, D.; Schlatter, D.; Schmitt, M.; Schneider, O.; Tejessy, W.; Teubert, F.; Tomalin, I. R.; Tournefier, E.; Vreeswijk, M.; Wright, A. E.; Ajaltouni, Z.; Badaud, F.; Chazelle, G.; Deschamps, O.; Dessagne, S.; Falvard, A.; Ferdi, C.; Gay, P.; Guicheney, C.

In: European Physical Journal C, Vol. 11, No. 2, 01.01.1999, p. 193-216.

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

TY - JOUR

T1 - Search for charginos and neutralinos in e+e- collisions at centre-of-mass energies near 183 GeV and constraints on the MSSM parameter space

AU - Barate, R.

AU - Decamp, D.

AU - Ghez, P.

AU - Goy, C.

AU - Jezequel, S.

AU - Lees, J. P.

AU - Martin, F.

AU - Merle, E.

AU - Minard, M. N.

AU - Nief, J. Y.

AU - Pietrzyk, B.

AU - Alemany, R.

AU - Casado, M. P.

AU - Chmeissani, M.

AU - Crespo, J. M.

AU - Delfino, M.

AU - Fernandez, E.

AU - Fernandez-Bosman, M.

AU - Garrido, L.

AU - Graugès, E.

AU - Juste, A.

AU - Martinez, M.

AU - Merino, G.

AU - Miquel, R.

AU - Mir, L. M.

AU - Morawitz, P.

AU - Pacheco, A.

AU - Park, I. C.

AU - Pascual, A.

AU - Riu, I.

AU - Sanchez, F.

AU - Colaleo, A.

AU - Creanza, D.

AU - de Palma, M.

AU - Gelao, G.

AU - Iaselli, G.

AU - Maggi, G.

AU - Maggi, M.

AU - Nuzzo, S.

AU - Ranieri, A.

AU - Raso, G.

AU - Ruggieri, F.

AU - Selvaggi, G.

AU - Silvestris, L.

AU - Tempesta, P.

AU - Tricomi, A.

AU - Zito, G.

AU - Huang, X.

AU - Lin, J.

AU - Ouyang, Q.

AU - Wang, T.

AU - Xie, Y.

AU - Xu, R.

AU - Xue, S.

AU - Zhang, J.

AU - Zhang, L.

AU - Zhao, W.

AU - Abbaneo, D.

AU - Becker, U.

AU - Boix, G.

AU - Cattaneo, M.

AU - Ciulli, V.

AU - Dissertori, G.

AU - Drevermann, H.

AU - Forty, R. W.

AU - Frank, M.

AU - Gianotti, F.

AU - Halley, A. W.

AU - Hansen, J. B.

AU - Harvey, J.

AU - Janot, P.

AU - Jost, B.

AU - Lehraus, I.

AU - Leroy, O.

AU - Loomis, C.

AU - Maley, P.

AU - Mato, P.

AU - Minten, A.

AU - Moutoussi, A.

AU - Ranjard, F.

AU - Rolandi, L.

AU - Rousseau, D.

AU - Schlatter, D.

AU - Schmitt, M.

AU - Schneider, O.

AU - Tejessy, W.

AU - Teubert, F.

AU - Tomalin, I. R.

AU - Tournefier, E.

AU - Vreeswijk, M.

AU - Wright, A. E.

AU - Ajaltouni, Z.

AU - Badaud, F.

AU - Chazelle, G.

AU - Deschamps, O.

AU - Dessagne, S.

AU - Falvard, A.

AU - Ferdi, C.

AU - Gay, P.

AU - Guicheney, C.

PY - 1999/1/1

Y1 - 1999/1/1

N2 - Searches for charginos and neutralinos are performed with the data collected by the ALEPH detector at LEP at centre-of-mass energies near 183 GeV. In these searches, it is assumed that R-parity is conserved and that the lightest neutralino is the LSP. No evidence of a signal is observed in the 57 pb-1 accumulated, which excludes chargino and associated neutralino production up to the kinematic limit over large regions of the MSSM parameter space. Under the assumptions of common gaugino and common sfermion masses at the unification scale, the interplay between the chargino, neutralino and slepton exclusion limits allows a lower bound of 27 GeV/c2 to be set on the mass of the lightest neutralino. Tighter constraints on the MSSM parameter space are obtained using in addition exclusions in the Higgs sector. Finally, the results are interpreted within the framework of minimal supergravity.

AB - Searches for charginos and neutralinos are performed with the data collected by the ALEPH detector at LEP at centre-of-mass energies near 183 GeV. In these searches, it is assumed that R-parity is conserved and that the lightest neutralino is the LSP. No evidence of a signal is observed in the 57 pb-1 accumulated, which excludes chargino and associated neutralino production up to the kinematic limit over large regions of the MSSM parameter space. Under the assumptions of common gaugino and common sfermion masses at the unification scale, the interplay between the chargino, neutralino and slepton exclusion limits allows a lower bound of 27 GeV/c2 to be set on the mass of the lightest neutralino. Tighter constraints on the MSSM parameter space are obtained using in addition exclusions in the Higgs sector. Finally, the results are interpreted within the framework of minimal supergravity.

M3 - Article

VL - 11

SP - 193

EP - 216

JO - European Physical Journal C

JF - European Physical Journal C

SN - 1434-6044

IS - 2

ER -