English

Expectations on $B\to (K^*_{0}(1430),K^*_{2}(1430))\phi$ decays

High Energy Physics - Phenomenology 2008-11-26 v3 High Energy Physics - Experiment

Abstract

As the annihilation contributions play important roles in solving the puzzle of the small longitudinal polarizations in BKϕB\to K^* \phi decays, we examine the similar effects in the decays of BK0,2(1430)ϕB\to K^*_{0,2}(1430) \phi. For the calculations on the annihilated contributions, we adopt that the form factors in BK()ϕB\to K^{(*)} \phi decays are parameters determined by the observed branching ratios (BRs), polarization fractions (PFs) and relative angles in experiments and we connect the parameters between BK0(2)ϕB\to K^*_{0(2)} \phi and BK()ϕB\to K^{(*)}\phi by the ansatz of correlating \laKn(1430)ϕ(VA)μ0\ra\la K^*_n(1430) \phi| (V-A)_{\mu}|0\ra to \laK()ϕ(VA)μ0\ra\la K^{(*)} \phi| (V-A)_{\mu}|0\ra. We find that the BR of BdK00(1430)ϕB_d\to K^{*0}_{0}(1430) \phi is (3.69±0.47)×106(3.69 \pm 0.47)\times 10^{-6}. By using the transition form factors of BK2(1430)B\to K^*_2(1430) in the light-front quark model (LFQM) and the 2nd version of Isgur-Scora-Grinstein-Wise (ISGW2), we show that BR of BdK20(1430)ϕB_d\to K^{*0}_{2}(1430)\phi is a broad allowed value and (1.70±0.80)×106(1.70\pm0.80)\times 10^{-6}, respectively. In terms of the recent BABAR's observations on BRs and PFs in BdK20(1430)ϕB_d\to K^{*0}_{2}(1430)\phi , the results in the LFQM are found to be more favorable. In addition, due to the annihilation contributions to BK2ϕB\to K^*_2\phi and BKϕB\to K^*\phi being opposite in sign, we demonstrate that the longitudinal polarization of BdK20(1430)ϕB_d\to K^{*0}_2(1430) \phi is always O(1) with or without including the annihilation contributions.

Keywords

Cite

@article{arxiv.hep-ph/0701023,
  title  = {Expectations on $B\to (K^*_{0}(1430),K^*_{2}(1430))\phi$ decays},
  author = {Chuan-Hung Chen and Chao-Qiang Geng},
  journal= {arXiv preprint arXiv:hep-ph/0701023},
  year   = {2008}
}

Comments

20 pages, 4 figures, references added, version to appear in Phys. Rev. D