PHYS08200604017 Manimala Mitra - Homi Bhabha National Institute

Sl no Channels Effective cross-section
in fb
1 4b +OSD 35.84
2 4b+l+ ̸ p T 96.3
3 4b+l ′ + ̸ p T 107.4
4 4b+τ+ ̸ p T 53.7
5 4b+l+2j+ ̸ p T 26.88
6 4b+2l+2j 36.12
7 4b+3l(2l+l ′ )+ ̸ p T 12.04
Table 3.11: Effective cross-sections in fb for M Σ1 = 300 GeV, for the most important
channels for our model.
• We begin by looking at the Σ ± Σ 0 decays where Σ ± → l ± h 0 and Σ 0 → νh 0 . This
would lead to the following final state configuration
Σ ± Σ 0 → l ± h 0 h 0 ν → 4b+l+ ̸ p T ,
with a very large effective cross-section of 96.3 fb. This channel should be easy to
tag. The 4 b-jets come from the displaced h 0 vertices, and the lepton released is
hard. This lepton will also carry information on the µ-τ symmetric flavor structure
of the model. For the choice of Higgs mass M h 0 = 70 GeV, the effective cross
section reduces to 89.6. Another unambiguous channel with significant effective
cross-section coming from the l ± h 0 h 0 ν intermediate state is
where one of the h 0 decays into τ¯τ.
Σ ± Σ 0 → l ± h 0 h 0 ν → 2b+l+2τ+ ̸ p T ,
• The other intermediate state which has very largeeffective cross-sections is Σ ± Σ 0 →
νH ± νh 0 . The H ± would decay into W ± h 0 , and W ± into a lepton l ′ finally giving
Σ ± Σ 0 → H ± νh 0 ν → 4b+l ′ + ̸ p T ,
withaneffective cross-section of107.4fb. Alternatively, theW − couldinsteaddecay
into τ¯ν τ giving
Σ ± Σ 0 → H ± νh 0 ν → 4b+τ+ ̸ p T ,
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