Collider signatures of gravitino dark matter with a sneutrino NLSP

Details Collider signatures of gravitino dark matter with a sneutrino NLSP Collider signatures of gravitino dark matter with a sneutrino NLSP

2007-03-12

arxiv.org/abs/hep-ph/0703130v3

JHEP0708:015,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, 5 figures; 2 typos corrected, version published in JHEP

Scientific paper

10.1088/1126-6708/2007/08/015

For gravitino dark matter with conserved R-parity and mass in the GeV range, very strong constraints from Big Bang Nucleosynthesis exclude the popular NLSP candidates like neutralino and charged sleptons. In this letter we therefore draw attention to the case of a sneutrino NLSP, that is naturally realised in the context of gaugino mediation. We find interesting collider signatures, characterised by soft jets or leptons due to the small sneutrino--stau mass splitting. Moreover, the lightest neutralino can have visible decays into staus, and in some part of the parameter space also into selectrons and smuons. We also show the importance of coannihilation effects for the evaluation of the BBN constraints.

Affiliated with

Also associated with

No associations

Rating

Collider signatures of gravitino dark matter with a sneutrino NLSP does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Collider signatures of gravitino dark matter with a sneutrino NLSP, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Collider signatures of gravitino dark matter with a sneutrino NLSP will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-285836