期刊
INTERNATIONAL JOURNAL OF MODERN PHYSICS A
卷 36, 期 4, 页码 -出版社
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0217751X21500123
关键词
BSM; heavy neutrino search; NLO; new production channel; collider phenomenology
资金
- Korea Neutrino Research Center - Korea government (MSIP) [2009-0083526]
- National Research Foundation of Korea [00000002] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The paper discusses the explanation of small neutrino mass using the inverse seesaw model and its study at the LHC and a prospective 100 TeV hadron collider. The research shows the significant impact of the lepton number violating parameter magnitude on the nature of heavy neutrinos in the inverse seesaw model.
The explanation of the small neutrino mass can be depicted using some handsome models like type-I and inverse seesaw where the Standard Model gauge singlet heavy right-handed neutrinos are deployed. The common thing in these two models is a lepton number violating parameter, however, its order of magnitude creates a striking difference between them making the nature of the right-handed heavy neutrinos a major play factor. In the type-I seesaw a large lepton number violating parameter involves the heavy right-handed neutrinos in the form of Majorana fermions while a small lepton number violating parameter being involved in the inverse seesaw demands the pseudo-Dirac nature of the heavy right-handed neutrinos. Such heavy neutrinos are accommodated in these models through the sizable mixings with the Standard Model light neutrinos. In this paper we consider the purely inverse seesaw scenario to study the pair production of the pseudo-Dirac heavy neutrinos followed by their various multilepton decay modes through the leading branching fraction at the leading order and next-to-leading order QCD at the LHC with a center-of-mass energy of 13 TeV and a luminosity of 3000 fb(-1). We also consider a prospective 100 TeV hadron collider with luminosities of 3000 fb(-1) and 30,000 fb(-1), respectively to study the process. Using anomalous multilepton search performed by the CMS at the 8 TeV with 19.5 fb(-1) luminosity we show prospective search reaches of the mixing angles for the three lepton and four lepton events at the 13 TeV LHC and 100 TeV hadron collider.
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