Anomalous Wtb Couplings and b  → sγ in the Topcolor Assisted Technicolor Models

Chin. Phys. Lett.

2001, Vol. 18

Issue (3): 349-351 DOI:

Original Articles

Anomalous Wtb Couplings and b → sγ in the Topcolor Assisted Technicolor Models

YUE Chong-Xing;LU Gong-Ru;LI Wei-Bin

College of Physics and Information Engineering, He’nan Normal University, Xinxiang 453002

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YUE Chong-Xing, LU Gong-Ru, LI Wei-Bin 2001 Chin. Phys. Lett. 18 349-351

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Abstract Using the topcolor-assisted technicolor models, we give the anomalous Wtb couplings arising from the exchange of the new gauge bosons (ETC gauge boson, colorons and Z') and calculate their contributions to the b → sγ branching ratio. We find that the contributions mainly come from colorons and the recent measured value of the b → sγ branching ratio gives a strong constraint on the masses of colorons.

Keywords: 14.65.Ha 12.60.Cn 12.60.Nz

Published: 01 March 2001

PACS:	14.65.Ha	(Top quarks)
	12.60.Cn	(Extensions of electroweak gauge sector)
	12.60.Nz	(Technicolor models)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2001/V18/I3/0349

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