Abstract
We analyze the polarization properties of photons which are produced in the unpolarizedb-quark decay,b→sγg. Using the structure function formalism we carry out a general analysis of the polarization characteristics of γ in terms of the standard Stokes parameters. The expressions for five independent structure functions are constructed in terms of the weak magnetic transition form factors of the verticesb→sγ andb→sg. Numerical calculations of the Stokes parameters and various differential distributions forb→sγg are performed for the two-Higgs doublet model (2HDM). We studied the dependences of all these characteristics to the model parameters. These results were compared with the Standard Model predictions for different top quark masses. Strong sensitivity of the Stokes parameters, which defines the linear photon polarization, to the model is demonstrated.
Similar content being viewed by others
References
A. Ali, C. Greub, T. Mannel: Preprint DESY 93-016 (1993); A. Ali: Prep. CERN-TH 7168/94 (1994)
A. Ali: Prep. CERN-TH7054/93 (1993)
R. Grigjanis, P.J. O'Donnel, M. Sutherland, H. Navelet: Phys. Rep. 228 (1993) 93
A.J. Buras, M. Misiak, M. Mans, S. Pokorski: Preprint MPI-Ph 193-77 (hep-ph 9311345)
A. Ali, C. Greub: Z. Phys. C49 (1991) 431; ibid A. Ali, C. Greub: Z. Phys. C60 (1993) 433; Phys. Lett. B259 (1991) 182; ibid. Phys. Lett. B287 (1992) 191
T. Inami, C.S. Lim: Prog. Theor. Phys. 65, 297 (1981); Errata 65 (1981) 1772
I.S. Choi, S.Y. Choi, H.S. Song: Phys. Rev. D41 (1990) 1695
T.M. Aliev, E. Iltan, N.K. Pak, M.P. Rekalo: Phys. Lett B332 (1994) 381; T.M. Aliev, G. Turan: Phys. Rev. D48 (1993) 1176; S. Herrlich, Jan Kalinowski: Nucl. Phys. B381 (1992) 501; V. Sharma, D. Wyler: Nucl. Phys. B344 (1990) 283
M. Gourdin: Phys. Lett. B316 (1993) 578
Jiung Liu, York-Peng Yao: Phys. Rev. D42 (1990) 1985
B. Grinstein, R. Springer, M.B. Wise: Nucl. Phys. B339 (1990) 269; T.G. Rizzo: Phys. Rev. D38 (1988) 820; W.S. Hou: R.S. Willey: Phys. Lett. B202 (1988) 591; C.Q. Geng, J.N. Ng: Phys Rev. D38 (1989) 2857; V. Barger, J.L. Hewett, R.J.N. Phillips: Phys. Rev. D41 (1990) 3421
L.E. Abott, P. Sikive, M.B. Wise: Phys. Rev. D21 (1980) 1393
D. Decamp et al.: Phys. Lett. B241 (1990) 623; P. Abreu et. al.: Phys. Lett. B241 (1990) 449
R. Ammar et al.: Phys. Rev. Lett. 71 (1993) 674
F. Abe et al.: Prep. Fermilab-PUB-99/097-E, CDE/PUB/TOP PUB/2561 (1994)
V.B. Berestetsky, E.M. Lifshitz, L.P. Pitaevsky: Quantum Electrodynamics, Nauka, Moscow (1980)
R. Brown, D. Sahdev, K. Mikaelian: Phys. Rev D20 (1979) 1164; M. Samuel, D. Sahdev: Phys. Rev. Lett. 43 (1979) 746 Zhu Dongpej: Phys. Rev. D22 (1980) 2266 S.J. Brodsky, R.W. Brown: Phys. Rev. Lett. 49 (1982) 966 R.W. Brown, K.L. Kowalski, S.J. Brodsky: Phys. Rev. D28 (1983) 624 M.A. Samuel: Phys. Rev. D27 (1983) 2724
P. Krawczyk, S. Pokorski: Phys. Lett. 60 (1988) 182; G. Isidori: Phys. Lett. B298 (1993) 409
A.J. Buras, P. Krawczyk, M.E. Lautenbacker, C. Salazar: Nucl. Phys. B337 (1990) J. Gunion, B. Grzadkowski: Phys. Lett. B243 (1990) 301
J.L. Hewett: Phys. Rev. Lett. 70 (1993) 1045 V. Barger, M.S. Berger, R.J.N. Phillips: Phys. Rev. Lett. 70 (1993) 1368
C. Hall: Prep. Fermilab-PUB-93/256-T(1993)
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Aliev, T.M., Pak, N.K. & Rekalo, M.P. Photon polarization effects inb → sγg decay. Z. Phys. C - Particles and Fields 66, 663–679 (1995). https://doi.org/10.1007/BF01579642
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF01579642