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arXiv 0803.2835hep-ph
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LHC重Majorana中微子产生和衰变中的荷电希格斯玻色子效应

Charged Higgs Boson Effects in the Production and Decay of a Heavy Majorana Neutrino at the LHC

Shaouly Bar-Shalom, Gad Eilam, Tao Han, Amarjit Soni

摘要:

我们考虑了重Majorana中微子(N)和带电希格斯玻色子玻色子(H+)之间的一种新的相互作用,并表明它对LHC中同号双轻子的轻子数破坏(LNV)信号有着重要的影响.先前在LHC上考虑的重Majorana中微子的LNV信号pp -> l+ N -> l+ l+ W-可能被pp -> l+ N -> l+ l+ H-压倒。随着随后的衰变H- -> b t(bar)或H- -> W- H^0,重马约拉纳中微子的产生导致了l+ l+ b b(bar)+ 2喷流的壮观事件。我们还探讨了m_N < m_{H+}的情况,其中衰变H+ -> 1 + N可以成为LHC的主要N-产生机制。特别地,我们证明了gb-> tH-,t-bW+和H-> l-N-> l-l- W+的过程可能导致另一种类型的l-l- b + 4喷流的壮观事件。

英文摘要:

We consider a new interaction between a heavy Majorana neutrino (N) and a charged Higgs boson (H+) and show that it can have drastic implications on lepton number violating (LNV) signal of same-sign dileptons at the LHC. The LNV signal of heavy Majorana neutrinos previously considered at the LHC, pp -> l+ N -> l+ l+ W-, may be overwhelmed by pp -> l+ N -> l+ l+ H-. With the subsequent decays H- -> b t(bar) or H- -> W- H^0, the heavy Majorana neutrino production leads to the spectacular events of l+ l+ b b(bar) + 2 jets. We also explore the case m_N < m_{H+}, where the decay H+ -> l+ N can become the dominant N-production mechanism at the LHC. In particular, we show that the process g b -> t H- followed by t -> b W+ and H- -> l- N -> l- l- W+ could lead to another type of spectacular events of l- l- b + 4 jets.

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