Search for heavy, long-lived neutralinos that decay to photons at CDF II using photon timing

CDF Collaboration

doi:10.1103/PhysRevD.78.032015

Scientific article

English

Search for heavy, long-lived neutralinos that decay to photons at CDF II using photon timing

Contributors

CDF Collaboration

Collaborators

Clark, Allan Geoffrey; Sfyrla, Anna; Vallecorsa, Sofia; Wu, Xin

Published in

Physical review. D. Particles, fields, gravitation, and cosmology, vol. 78, no. 03, 032015

Publication date

2008

Abstract

We present the results of the first hadron collider search for heavy, long-lived neutralinos that decay via χ˜01→γG˜ in gauge-mediated supersymmetry breaking models. Using an integrated luminosity of 570±34 pb−1 of pp collisions at s√=1.96 TeV, we select γ+jet+missing transverse energy candidate events based on the arrival time of a high-energy photon at the electromagnetic calorimeter as measured with a timing system that was recently installed on the CDF II detector. We find 2 events, consistent with the background estimate of 1.3±0.7 events. While our search strategy does not rely on model-specific dynamics, we set cross section limits and place the world-best 95% C.L. lower limit on the χ˜01 mass of 101 GeV/c2 at τχ˜01=5 ns.

UNIGE affiliation entities

Faculté des sciences / Section de physique / Département de physique nucléaire et corpusculaire

Citation (ISO format)

CDF Collaboration. Search for heavy, long-lived neutralinos that decay to photons at CDF II using photon timing. In: Physical review. D. Particles, fields, gravitation, and cosmology, 2008, vol. 78, n° 03, p. 032015. doi: 10.1103/PhysRevD.78.032015

Article (Published version)

Identifiers

PID : unige:38529
DOI : 10.1103/PhysRevD.78.032015

Additional URL for this publication

http://journals.aps.org/prd/abstract/10.1103/PhysRevD.78.032015

Journal ISSN

1550-2368

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317downloads

Creation

07/07/2014 16:13:00

First validation

07/07/2014 16:13:00

Update

13/10/2025 22:33:36

Status update

14/03/2023 21:25:54

Last indexation

10/11/2026 16:59:17

Search for heavy, long-lived neutralinos that decay to photons at CDF II using photon timing

Contributors

Collaborators

Published in

Publication date

Abstract

UNIGE affiliation entities

Citation (ISO format)

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Additional URL for this publication

Journal ISSN

Technical informations

Creation

First validation

Update

Status update

Last indexation