Eur. Phys. J. C (2007) 49: 657-664
https://doi.org/10.1140/epjc/s10052-006-0141-2

Regular Article - Theoretical Physics

CP violation in the B→Kℓ⁺ℓ^- decay

¹ Department of Physics, Middle East Technical University, 06531, Ankara, Turkey
² Institute of Physics, Baku, Azerbaijan
³ Center for Theoretical Physics, Jamia Millia University, New Delhi, 110 025, India
⁴ Institute de Physique Nucléaire, Université de Lyon I, 4 rue E. Fermi, Villeurbanne Cedex, 696222, France
⁵ Theory Group, KEK, Oho 1-1, Tsukuba, Ibaraki, 305-0801, Japan

^* e-mail: naveen@post.kek.jp

Received: 31 May 2006
Published online: 24 November 2006

Abstract

Standard model (SM) CP asymmetries in B→Kℓ⁺ℓ^- are expected to be very small. This feature could help in the understanding of new physics scenarios which predict the existence of CP odd phases in various Wilson coefficients. In this paper we have analyzed the B→Kℓ⁺ℓ^- decay in scenarios beyond the SM where the Wilson coefficients have new CP odd phases. The sensitivity of the CP asymmetries on these new weak phases is discussed.