Searching for invisible and almost invisible particles at {ital e}{sup {bold +}}{ital e}{sup {bold {minus}}} colliders

Journal Article · Thu Feb 29 23:00:00 EST 1996 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.76.2002· OSTI ID:286128

Chen, C; Drees, M; Gunion, J F ^[1]

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1. Davis Institute for High Energy Physics, University of California at Davis, Davis, California 95616 (United States)

We explore the techniques, cross sections, and expected signal significance for detecting invisible and almost invisible particles at CERN {ital e}{sup +}{ital e}{sup {minus}} collider LEP2 and the NLC (next linear {ital e}{sup +}{ital e}{sup {minus}} collider) by means of a hard photon tag. Examples from supersymmetry include the lightest chargino and second lightest neutralino when their masses are nearly the same as that of the lightest neutralino [the LSP (lightest supersymmetric particle)], and invisibly decaying sneutrinos. The importance of particular features of the detectors is discussed. {copyright} {ital 1996 The American Physical Society.}

• Research Organization: University of Wisconsin
• DOE Contract Number: FG02-95ER40896; FG03-91ER40674
• OSTI ID: 286128
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 12 Vol. 76; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CERN
CROSS SECTIONS
DETECTION
ELECTRON-POSITRON INTERACTIONS
LINEAR COLLIDERS
NEUTRAL PARTICLES
PARTICLE IDENTIFICATION
PHOTONS
SIGNALS
SPARTICLES
SUPERSYMMETRY