Friday, February 24, 2012

1202.5190 (Nishita Desai et al.)

Constraints on invisible Higgs decay in MSSM in the light of diphoton
rates from the LHC
   [PDF]

Nishita Desai, Biswarup Mukhopadhyaya, Saurabh Niyogi
We examine the parameter space of the purely phenomenological minimal super-
symmetric standard model (MSSM), without assuming any supersymmetry breaking
scheme. We find that a large region of the parameter space can indeed yield the
lightest neutral Higgs mass around 125 GeV, as suggested by the recent ATLAS
data, and also lead to event rates around, or slightly higher than, the
standard model expectation in the two-photon and four-lepton channels. Using a
lightest neutralino that is considerably lighter than the Higgs, we find that
the 'invisible' decay of the Higgs into a pair of neutralinos upto about 10%
can be consistent with the current data from the Large Hadron Collider (LHC).
View original: http://arxiv.org/abs/1202.5190

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