ALEPH four jet excess, Rb and R-parity violation

Chankowski, Piotr H. ; Choudhury, Debajyoti ; Pokorski, Stefan (1996) ALEPH four jet excess, Rb and R-parity violation Physics Letters B, 389 (4). pp. 677-686. ISSN 0370-2693

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/S0370-2693(96)01335-4

Abstract

We review briefly the indications for some relatively light superpartners based on the Rb anomaly and discuss the dependence of the potential increase in Rb on the assumption about R - parity (non)conservation. We point out that the exotic 4-jet events reported by ALEPH may constitute a signal for super- symmetry with such a light spectrum and with explicitly broken R - parity. A parton level simulation shows that production of a pair of light charginos with their subsequent baryon-number violating decays (either through a stop or through a neutralino) could possibly give rise to this excess. The decay χ-1→t~1b‾dsb with mχ-1~60 GeV and mt~~52 GeV leads to signatures very close to the experimental observations.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
ID Code:74719
Deposited On:19 Dec 2011 06:31
Last Modified:18 May 2016 19:02

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