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Phenomenology of scalar leptoquarks

Arnold, Jonathan M. and Fornal, Bartosz and Wise, Mark B. (2013) Phenomenology of scalar leptoquarks. Physical Review D, 88 (3). Art. No. 035009 . ISSN 2470-0010. doi:10.1103/PhysRevD.88.035009.

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We study the simplest renormalizable scalar leptoquark models where the standard model is augmented only by one additional scalar representation of SU(3)×SU(2)×U(1). The requirement that there be no proton decay from renormalizable interactions singles out two such models, one of which exhibits an unusual top mass enhancement of the μ→eγ decay rate. We analyze the phenomenology of the model with the unusual top mass enhancement of loop level chirality changing charged lepton processes in the light of existing and upcoming experiments. Both of the models that do not allow proton decay from renormalizable interactions have dimension-5 operators that, even if suppressed by the Planck scale, can give rise to an unacceptably high level of baryon number violation. We discuss symmetries that can forbid these dimension-5 operators.

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Additional Information:© 2013 American Physical Society. Received 1 May 2013; revised manuscript received 25 June 2013; published 7 August 2013. The authors are grateful to Vincenzo Cirigliano and Robert Tschirhart for helpful comments. This paper is funded by the Gordon and Betty Moore Foundation through Grant No. #776 to the Caltech Moore Center for Theoretical Cosmology and Physics. The work of the authors was supported also in part by the U.S. Department of Energy under Contract No. DE-FG02-92ER40701.
Group:Caltech Theory, Moore Center for Theoretical Cosmology and Physics
Funding AgencyGrant Number
Department of Energy (DOE)DE-FG02-92ER40701
Gordon and Betty Moore Foundation776
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Issue or Number:3
Classification Code:PACS: 14.80.Sv, 13.35.Bv, 12.60.-i
Record Number:CaltechAUTHORS:20130515-135302971
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:38528
Deposited By: Tony Diaz
Deposited On:12 Aug 2013 22:17
Last Modified:09 Nov 2021 23:38

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