Godbole, Rohini M. ; Kraml, Sabine ; Rindani, Saurabh D. ; Singh, Ritesh K. (2006) Probing CP-violating higgs contributions in γγ→ff¯ through fermion polarization Physical Review D, 74 (9). 095006_1-095006_14. ISSN 0556-2821
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Official URL: http://prd.aps.org/abstract/PRD/v74/i9/e095006
Related URL: http://dx.doi.org/10.1103/PhysRevD.74.095006
Abstract
We discuss the use of fermion polarization for studying neutral Higgs bosons at a photon collider. To this aim we construct polarization asymmetries which can isolate the contribution of a Higgs boson φ in γγ→ff¯, f=τ/t, from that of the QED continuum. This can help in getting information on the γγφ coupling in case φ is a CP eigenstate. We also construct CP-violating asymmetries which can probe CP mixing in case φ has indeterminate CP. Furthermore, we take the minimal supersymmetric standard model (MSSM) with CP violation as an example to demonstrate the potential of these asymmetries in a numerical analysis. We find that these asymmetries are sensitive to the presence of a Higgs boson as well as its CP properties over a wide range of MSSM parameters. In particular, the method suggested can cover the region where a light Higgs boson may have been missed by LEP due to CP violation in the Higgs sector, and may be missed as well at the LHC.
Item Type: | Article |
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Source: | Copyright of this article belongs to American Physical Society. |
ID Code: | 14338 |
Deposited On: | 12 Nov 2010 08:42 |
Last Modified: | 16 May 2016 23:19 |
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