Quark-lepton unification and rare meson decays

Valencia, G.; Willenbrock, S.

doi:10.1103/physrevd.50.6843

Cited by 112 publications

(143 citation statements)

References 34 publications

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“…Thus the octet Φ 8 and the leptoquark Φ 4 can be well within this bound but the leptoquark Φ 3 can be of smaller mass by taking small negativeλ 6 . In this work we take them to be the free parameters which we constrain from the IceCube data.…”

Section: Jhep04(2016)187mentioning

confidence: 99%

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Constraints on leptoquark models from IceCube data

Dey

Mohanty

2016

J. High Energ. Phys.

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Leptoquarks in the mass range of 500-1000 GeV can be resonantly produced in significant numbers by PeV neutrino interacting with nuclei at IceCube. We compute the event rates of leptoquark production and decay events and use the 3-year IceCube data for PeV energy events to find the allowed range of the leptoquarks mass and coupling parameter space. We use a low-scale quark lepton unification model based on the SU(4) C ⊗ SU(2) L ⊗ U(1) R gauge group where leptoquark couplings which give rise to proton decay are forbidden by the symmetry. We constrain the parameters of this model and point out signals of leptoquarks in this model which may be seen in PeV energy IceCube events in the future.

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Section: Jhep04(2016)187mentioning

confidence: 99%

“…which give rise to proton decay. In addition to these scalar leptoquarks there are vector leptoquarks from the gauge bosons of the G QL gauge group but these are constrained to be heavy (M X > 10 3 TeV) to evade bounds from rare meson decays [6,7].…”

Section: Introductionmentioning

confidence: 99%

Constraints on leptoquark models from IceCube data

Dey

Mohanty

2016

J. High Energ. Phys.

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“…In the Pati-Salam model limits on the branching fractions can be translated into limits on leptoquark masses [18] . Using this framework the branching fraction limits provide the following lepto-quark mass constraints when the lepto-quarks couple to different generations of quarks and leptons.…”

Section: B(bmentioning

confidence: 99%

Very rare decays at LHCb

Evans¹

2016

Proceedings of 16th International Conference on B-Physics at Frontier Machines — PoS(BEAUTY2016)

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Very rare decays are processes that are highly suppressed in the Standard Model, however theories that go beyond the Standard Model can often predict significant enhancements to their branching fractions making the study of very rare decays interesting as indirect searches for new physics. The results from searches for very rare decays at the LHCb experiment and combined analysis of CMS and LHCb Run 1 data for B 0 (s) → µ + µ − are reviewed.16th International Conference on B-Physics at Frontier Machines

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“…The MQLS model predicted the existence of the vector leptoquarks with masses on the order of the mass scale, which S U c (4) symmetry is broken. The mass limits for the vector leptoquarks are well known and the most stringent of them are the indirect mass limits resulted from K 0 L → e ± µ ∓ decay and they are of order of 10 3 TeV [5][6][7]. However, these restrictions can be lowered if consider additional fermion mixing, in this case masses can be order 40 TeV [8,9] This paper describes constraints on the masses vector leptoquarks from the current experimental data on the leptonic decays K 0 L −, B 0 −, B s − mesons.…”

Section: Introductionmentioning

confidence: 99%