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Minimal extension of the standard model scalar sector

O'Connell, Donal and Ramsey-Musolf, Michael J. and Wise, Mark B. (2007) Minimal extension of the standard model scalar sector. Physical Review D, 75 (3). Art. No. 037701. ISSN 2470-0010.

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The minimal extension of the scalar sector of the standard model contains an additional real scalar field with no gauge quantum numbers. Such a field does not couple to the quarks and leptons directly but rather through its mixing with the standard model Higgs field. We examine the phenomenology of this model focusing on the region of parameter space where the new scalar particle is significantly lighter than the usual Higgs scalar and has small mixing with it. In this region of parameter space most of the properties of the additional scalar particle are independent of the details of the scalar potential. Furthermore the properties of the scalar that is mostly the standard model Higgs can be drastically modified since its dominant branching ratio may be to a pair of the new lighter scalars.

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Ramsey-Musolf, Michael J.0000-0001-8110-2479
Additional Information:© 2007 The American Physical Society (Received 21 November 2006; published 13 February 2007)
Issue or Number:3
Record Number:CaltechAUTHORS:OCOprd07
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:7459
Deposited By: Archive Administrator
Deposited On:21 Feb 2007
Last Modified:02 Oct 2019 23:42

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