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

Sujata Pandey, Siddhartha Karmakar, Subhendu Rakshit

(Submitted on 17 Jul 2019)

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)