## Friday, July 19, 2019

### Non-Standard Neutrino Interactions Tightly Constrained By LHC and IceCube

Since experiments have finite precision, they are rarely rule out something entirely, but they can tightly constrain it.

# Strong constraints on non-standard neutrino interactions: LHC vs. IceCube

We find the constraints on various non-standard interactions~(NSI) of neutrinos from monojet+$\slashed{E}_T$ searches at the Large Hadron Collider~(LHC). Also, we show that the measurement of neutrino-nucleon cross-section from the observation of high energy astrophysical neutrino events at IceCube facilitates strong constraints on NSI as well. To this end, we pursue a comparative study of the prospects of LHC and IceCube in detecting NSI, also mentioning the role of low-energy experiments. We discuss the case of NSI with a new vector boson Z and it is found that for some range of mZ LHC puts more stringent bound, whereas IceCube supersedes elsewhere. We also pay special attention to the case of Z of mass of a few GeVs, pointing out that the IceCube constraints can surpass those from LHC and low-energy experiments. Although, for contact-type effective interactions with two neutrinos and two partons, constraints from LHC are superior.
 Comments: 31 pages, 8 figures Subjects: High Energy Physics - Phenomenology (hep-ph) Cite as: arXiv:1907.07700 [hep-ph] (or arXiv:1907.07700v1 [hep-ph] for this version)