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The Leptoquark Implication from the CMS and IceCube Experiments · Around

2015

The Leptoquark Implication from the CMS and IceCube Experiments

Dutta, Bhaskar, Gao, Yu, Li, Tianjun et al.

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The recent excess in the CMS measurements of $eejj$ and $e\nu jj$ channels and the emergence of PeV comsic neutrino events at the IceCube experiment share an intriguing implication for a leptoquark with a 600-650 GeV mass.

We investigate the CMS constraints on the flavor structure of a scenario with the minimal leptoquark Yukawa couplings and correlate such a scenario to the resonant enhancement in the very high energy shower event rates at the IceCube.
We find for a single leptoquark, the CMS signals require large couplings to the third generation leptons.
This leads to an enhancement in the $\nu_\tau$-nucleon scattering cross-section and subsequently more $\nu_\tau$ events at PeV energies.

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