Pregled bibliografske jedinice broj: 458773
Novel TeV-scale seesaw mechanism with Dirac mediators
Novel TeV-scale seesaw mechanism with Dirac mediators // Physics letters. B, 687 (2010), 4/5; 338-341 doi:10.1016/j.physletb.2010.03.062 (međunarodna recenzija, članak, znanstveni)
CROSBI ID: 458773 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Novel TeV-scale seesaw mechanism with Dirac mediators
Autori
Picek, Ivica ; Radovčić, Branimir
Izvornik
Physics letters. B (0370-2693) 687
(2010), 4/5;
338-341
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
Tree-level seesaw; Neutrino mass; Non-standard neutrinos
Sažetak
We propose novel tree level seesaw mechanism with TeV-scale vectorlike Dirac mediators that produce Majorana masses of the known neutrinos. The gauge quantum number assignment to the Dirac mediators allows them to belong to a weak triplet and a five-plet of nonzero hypercharge. The latter leads to new seesaw formula $m_{; ; ; ; \nu}; ; ; ; \sim v^6/M^5$, so that the empirical masses $m_{; ; ; ; \nu}; ; ; ; \sim 10^{; ; ; ; -1}; ; ; ; $ eV can be achieved by $M \sim$ TeV new states. There is a limited range of the parameter space with $M \leq$ a few 100 GeV where the tree level contribution dominates over the respective loop contributions and the proposed mechanism is testable at the LHC. We discuss specific signatures for Dirac type heavy leptons produced by Drell-Yan fusion at the LHC.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
POVEZANOST RADA
Projekti:
119-0982930-1016 - Elementarne čestice, teorija polja i kozmologija (Picek, Ivica, MZOS ) ( CroRIS)
Ustanove:
Prirodoslovno-matematički fakultet, Zagreb
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus
