We present the first search for heavy, long-lived particles that decay to photons at a hadron collider. We use a sample of Î+jet+missing transverse energy events in pp collisions at s=1.96 TeV taken with the CDF II detector. Candidate events are selected based on the arrival time of the photon at the detector. Using an integrated luminosity of 570pb-1 of collision data, we observe 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 in a supersymmetric model with I E 10 GE and place the world-best 95% C.L. lower limit on the χ˜10 mass of 101 GeV/c2 at Ï.,χ˜10=5ns

CDF Collaboration, A. Abulencia, J. Adelman, T. Affolder, T. Akimoto, M. G. Albrow, et al. (2007). Search for Heavy, Long-Lived Particles that Decay to Photons at CDF II. PHYSICAL REVIEW LETTERS, 99(12), 1-7 [10.1103/PhysRevLett.99.121801].

Search for Heavy, Long-Lived Particles that Decay to Photons at CDF II

CASTRO, ANDREA;DENINNO, MARIA MADDALENA;MOGGI, NICCOLO';RIMONDI, FRANCO;ZUCCHELLI, STEFANO
2007

Abstract

We present the first search for heavy, long-lived particles that decay to photons at a hadron collider. We use a sample of Î+jet+missing transverse energy events in pp collisions at s=1.96 TeV taken with the CDF II detector. Candidate events are selected based on the arrival time of the photon at the detector. Using an integrated luminosity of 570pb-1 of collision data, we observe 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 in a supersymmetric model with I E 10 GE and place the world-best 95% C.L. lower limit on the χ˜10 mass of 101 GeV/c2 at Ï.,χ˜10=5ns
2007
CDF Collaboration, A. Abulencia, J. Adelman, T. Affolder, T. Akimoto, M. G. Albrow, et al. (2007). Search for Heavy, Long-Lived Particles that Decay to Photons at CDF II. PHYSICAL REVIEW LETTERS, 99(12), 1-7 [10.1103/PhysRevLett.99.121801].
CDF Collaboration; A. Abulencia; J. Adelman; T. Affolder; T. Akimoto; M. G. Albrow; S. Amerio; D. Amidei; A. Anastassov; K. Anikeev; A. Annovi; J. Ant...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/53695
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