Lepton polarization in $B \to K_1 \ell^+ \ell^-$ Decays

Details Lepton polarization in $B \to K_1 \ell^+ \ell^-$ Decays Lepton polarization in $B \to K_1 \ell^+ \ell^-$ Decays

2009-02-15

arxiv.org/abs/0902.2578v2

JHEP 0906:062,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

Scientific paper

10.1088/1126-6708/2009/06/062

We study the single and double lepton polarization asymmetries in the semileptonic $B$ meson decays $B \to K_1 (1270) \ell^+ \ell^-$ $\ell \equiv e$, $\mu$, $\tau$), where the strange $P$-wave meson, $K_1(1270)$, is the mixtures of the $K_{1A}$ and $K_{1B}$, which are the $1^3P_1$ and $1^1P_1$ states, respectively. The lepton polarization asymmetries show relatively strong dependency in the various region of dileptonic invariant mass. The lepton polarization asymmetries can also be used for determining the $K_1(1270)$--$K_1(1400)$ mixing angle, $\theta_{K_1}$ and new physics effects. Furthermore, it is shown that these asymmetries in $B\to K_1(1270)\ell^+\ell^-$ decay compared with those of $B\to K^*\ell^+\ell^-$ decay are more sensitive to the dileptonic invariant mass.

Affiliated with

Also associated with

No associations

Rating

Lepton polarization in $B \to K_1 \ell^+ \ell^-$ Decays does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Lepton polarization in $B \to K_1 \ell^+ \ell^-$ Decays, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lepton polarization in $B \to K_1 \ell^+ \ell^-$ Decays will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-462194