Impact of single-top measurement to Littlest Higgs model with T-parity

We show that a precise measurement of the single-top production cross section at the Tevatron and the LHC can strongly constrain the model parameters of the Littlest Higgs model with T-parity. A reduction in the single-top production rate from the Standard Model prediction implies new physics phenom...

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Bibliographic Details
Published in:Physics letters. B 2008-09, Vol.668 (1), p.24-27
Main Authors: Cao, Qing-Hong, Li, Chong Sheng, Yuan, C.-P.
Format: Article
Language:English
Subjects:
Exact sciences and technology
Nuclear physics
Physics
The physics of elementary particles and fields
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Summary:We show that a precise measurement of the single-top production cross section at the Tevatron and the LHC can strongly constrain the model parameters of the Littlest Higgs model with T-parity. A reduction in the single-top production rate from the Standard Model prediction implies new physics phenomena generated by the heavy T-parity partners of the top quark. We show that the degree of polarization of the top quark produced from the decay of its heavy T-odd partner (T−) can be utilized to determine the new physics energy scale, and the mass of T− can be measured from the missing transverse momentum distribution in the T−T¯− event.
ISSN:0370-2693
1873-2445
DOI:10.1016/j.physletb.2008.08.024