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Search for charginos nearly mass degenerate with the lightest neutralino in e+ e- collisions at center-of-mass energies up to 209-GeV

Research output: Contribution to Journal/Magazine › Journal article › peer-review

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Search for charginos nearly mass degenerate with the lightest neutralino in e+ e- collisions at center-of-mass energies up to 209-GeV. / ALEPH Collaboration, The; Heister, A.; Bouhova-Thacker, Evelina et al.
In: Physics Letters B, Vol. 533, No. 3-4, 09.05.2002, p. 223-236.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

ALEPH Collaboration, T, Heister, A, Bouhova-Thacker, E, Bowdery, C, Finch, A, Foster, F, Hughes, G, Jones, R & Smizanska, M 2002, 'Search for charginos nearly mass degenerate with the lightest neutralino in e+ e- collisions at center-of-mass energies up to 209-GeV', Physics Letters B, vol. 533, no. 3-4, pp. 223-236. https://doi.org/10.1016/S0370-2693(02)01584-8

APA

ALEPH Collaboration, T., Heister, A., Bouhova-Thacker, E., Bowdery, C., Finch, A., Foster, F., Hughes, G., Jones, R., & Smizanska, M. (2002). Search for charginos nearly mass degenerate with the lightest neutralino in e+ e- collisions at center-of-mass energies up to 209-GeV. Physics Letters B, 533(3-4), 223-236. https://doi.org/10.1016/S0370-2693(02)01584-8

Vancouver

ALEPH Collaboration T, Heister A, Bouhova-Thacker E, Bowdery C, Finch A, Foster F et al. Search for charginos nearly mass degenerate with the lightest neutralino in e+ e- collisions at center-of-mass energies up to 209-GeV. Physics Letters B. 2002 May 9;533(3-4):223-236. doi: 10.1016/S0370-2693(02)01584-8

Author

ALEPH Collaboration, The ; Heister, A. ; Bouhova-Thacker, Evelina et al. / Search for charginos nearly mass degenerate with the lightest neutralino in e+ e- collisions at center-of-mass energies up to 209-GeV. In: Physics Letters B. 2002 ; Vol. 533, No. 3-4. pp. 223-236.

Bibtex

@article{39b4800d77464413b06e1fae71feb4a9,
title = "Search for charginos nearly mass degenerate with the lightest neutralino in e+ e- collisions at center-of-mass energies up to 209-GeV",
abstract = "A search for charginos nearly mass degenerate with the lightest neutralino is performed with the data collected by the ALEPH detector at LEP, at centre-of-mass energies between 189 and 209 GeV, corresponding to an integrated luminosity of 628 pb−1. The analysis is based on the detection of isolated and energetic initial state radiation photons, produced in association with chargino pairs whose decay products have little visible energy. The number of candidate events observed is in agreement with that expected from Standard Model background sources. These results are combined with those of other direct searches for charginos, and a lower limit of 88 GeV/c2 at 95% confidence level is derived for the chargino mass in the case of heavy sfermions, irrespective of the chargino-neutralino mass difference.",
author = "{ALEPH Collaboration}, The and A. Heister and Evelina Bouhova-Thacker and Christopher Bowdery and Alexander Finch and Frank Foster and Gareth Hughes and Roger Jones and Maria Smizanska",
year = "2002",
month = may,
day = "9",
doi = "10.1016/S0370-2693(02)01584-8",
language = "English",
volume = "533",
pages = "223--236",
journal = "Physics Letters B",
issn = "0370-2693",
publisher = "ELSEVIER SCIENCE BV",
number = "3-4",

}

RIS

TY - JOUR

T1 - Search for charginos nearly mass degenerate with the lightest neutralino in e+ e- collisions at center-of-mass energies up to 209-GeV

AU - ALEPH Collaboration, The

AU - Heister, A.

AU - Bouhova-Thacker, Evelina

AU - Bowdery, Christopher

AU - Finch, Alexander

AU - Foster, Frank

AU - Hughes, Gareth

AU - Jones, Roger

AU - Smizanska, Maria

PY - 2002/5/9

Y1 - 2002/5/9

N2 - A search for charginos nearly mass degenerate with the lightest neutralino is performed with the data collected by the ALEPH detector at LEP, at centre-of-mass energies between 189 and 209 GeV, corresponding to an integrated luminosity of 628 pb−1. The analysis is based on the detection of isolated and energetic initial state radiation photons, produced in association with chargino pairs whose decay products have little visible energy. The number of candidate events observed is in agreement with that expected from Standard Model background sources. These results are combined with those of other direct searches for charginos, and a lower limit of 88 GeV/c2 at 95% confidence level is derived for the chargino mass in the case of heavy sfermions, irrespective of the chargino-neutralino mass difference.

AB - A search for charginos nearly mass degenerate with the lightest neutralino is performed with the data collected by the ALEPH detector at LEP, at centre-of-mass energies between 189 and 209 GeV, corresponding to an integrated luminosity of 628 pb−1. The analysis is based on the detection of isolated and energetic initial state radiation photons, produced in association with chargino pairs whose decay products have little visible energy. The number of candidate events observed is in agreement with that expected from Standard Model background sources. These results are combined with those of other direct searches for charginos, and a lower limit of 88 GeV/c2 at 95% confidence level is derived for the chargino mass in the case of heavy sfermions, irrespective of the chargino-neutralino mass difference.

U2 - 10.1016/S0370-2693(02)01584-8

DO - 10.1016/S0370-2693(02)01584-8

M3 - Journal article

VL - 533

SP - 223

EP - 236

JO - Physics Letters B

JF - Physics Letters B

SN - 0370-2693

IS - 3-4

ER -