Lepton flavour violation in future linear colliders in the long-lived stau NLSP scenario | Zendy

Alejandro Ibarra | Zendy; Sourov Roy | Zendy

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Lepton flavour violation in future linear colliders in the long-lived stau NLSP scenario

Author(s) -

Alejandro Ibarra,

Sourov Roy

Publication year - 2007

Publication title -

journal of high energy physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.998

H-Index - 261

eISSN - 1126-6708

pISSN - 1029-8479

DOI - 10.1088/1126-6708/2007/05/059

Subject(s) - physics , gravitino , particle physics , lepton , lightest supersymmetric particle , flavour , collider , supersymmetry , minimal supersymmetric standard model , nuclear physics , international linear collider , electron , supergravity , detector , optics

We analyze the prospects of observing lepton flavour violation in future e-e-and e+e- linear colliders in scenarios where the gravitino is the lightestsupersymmetric particle, and the stau is the next-to-lightest supersymmetricparticle. The signals consist of multilepton final states with two heavilyionizing charged tracks produced by the long-lived staus. The Standard Modelbackgrounds are very small and the supersymmetric backgrounds can be kept wellunder control by the use of suitable kinematical cuts. We discuss in particularthe potential of the projected International Linear Collider to discover leptonflavour violation in this class of scenarios, and we compare the estimatedsensitivity with the constraints stemming from the non-observation of raredecays.Comment: 30 pages, 12 figures. Discussion extended to include the efficiency of identifying long-lived staus, references added. To appear in JHE

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