Left-Right Symmetry at LHC
By Alessio Maiezza, M. Nemevšek, Fabrizio Nesti, Goran Senjanovic. 2010
271 citations recorded by the source corpus.
We revisit the issue of the limit on the scale of left-right symmetry breaking. We focus on the minimal SU(2){sub L}xSU(2){sub R}xU(1){sub B-L} gauge theory with the seesaw mechanism and discuss the two possibilities of defining left-right symmetry as parity or charge conjugation. In the commonly adopted case of parity, we perform a complete numerical study of the quark mass matrices and the associated left and right mixing matrices without any assumptions usually made in the literature about the ratio of vacuum expectation values. We find that the usual lower limit on the mass of the right-handed gauge boson from the K mass difference, M{sub W{sub R}}>2.5 TeV, is subject to a possible small reduction due to the difference between right and left Cabibbo angles. In the case of charge conjugation the limit on M{sub W{sub R}} is somewhat more robust. However, the more severe bounds from CP-violating observables are absent in this case. In fact, the free phases can also resolve the present mild discrepancy between the standard model and CP violation in the B sector. Thus, even in the minimal case, both charged and neutral gauge bosons may be accessible at the Large Hadron Collider with spectacular signaturesmore » of lepton number violation.« less
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/72c5e192aeb16fbc651a5bcbdd21e1c362a71325
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In Nuclear and High Energy Physics
Citations in the corpus
- Lepton Number Violation: Seesaw Models and Their Collider Tests (2017, background): “, [159, 160], Weak CPV [124, 158, 161], EDMs [124–126, 158], and CP violation in the electron EDM [129], are particularly sensitive to this mixing, implying the competitive bound of MWR & 3 TeV at 95% CL [147].”
- Lepton number and flavour violation in TeV-scale left-right symmetric theories with large left-right mixing (2013, background): “come from an effective four fermion operator, as is the case in kaon mixing [11, 44, 101], with a factor of 1/2 coming from the Fierz transformation of a scalar to vector contribution (see Ref.”
- A facility to search for hidden particles at the CERN SPS: the SHiP physics case (2015, background): “The strange see quark determination by all the PDF groups relies mainly on the dimuon data collected by the NuTeV/CCFR collaboration.”
- Warm dark matter in low scale left-right theory (2012, background): “5 – 4 TeV [36, 37, 43], depending on the choice of the LR symmetry, charge conjugation or parity, respectively.”
- The Phenomenology of Right Handed Neutrinos (2013, background): “One promising possibility to test such models is to search for the associated gauge bosons [187], but also the properties of the NI themselves can be probed [188–191].”
- Present and Future K and B Meson Mixing Constraints on TeV Scale Left-Right Symmetry (2014, background): “This means that ε does not lead to a bound onMWR but rather to a constraint on the phase θd− θs [20, 21].”