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Measurement of the decays B-s(0) -˃ J/psi phi(1020), B-s(0) -˃ J/psi f(2)'(1525) and B-s(0) -˃ J/psi K+K- at Belle

Title
Measurement of the decays B-s(0) -˃ J/psi phi(1020), B-s(0) -˃ J/psi f(2)'(1525) and B-s(0) -˃ J/psi K+K- at Belle
Other Titles
psi phi(1020), B-s(0) -? J
Author
Issue Date
2013-12
Publisher
American Physical Society
Citation
PHYSICAL REVIEW D,
Abstract
We report a measurement of the branching fraction of the decay $B^0_s\to J/\psi\,\phi(1020)$, evidence and a branching fraction measurement for $B^0_s\to J/\psi\,f'_2(1525)$, and the determination of the total $B^0_s\to J/\psi\,K^+K^-$ branching fraction, including the resonant and non-resonant contributions to the $K^+K^-$ channel. We also determine the $S$-wave contribution within the $\phi(1020)$ mass region. The absolute branching fractions are $\mathcal{B}[B^0_s\to J/\psi\,\phi(1020)]=(1.25 \pm 0.07\left(\mathrm{stat}\right)\pm 0.08\left(\mathrm{syst}\right)\pm 0.22\left(f_s\right))\times 10^{-3}$, $\mathcal{B}[B^0_s\to J/\psi\,f'_2(1525)]=(0.26\pm 0.06\left(\mathrm{stat}\right)\pm 0.02\left(\mathrm{syst}\right) \pm 0.05\left(f_s\right))\times 10^{-3}$ and $\mathcal{B}[B^0_s\to J/\psi\,K^+K^-] = (1.01\pm 0.09\left(\mathrm{stat}\right) \pm 0.10\left(\mathrm{syst}\right)\pm 0.18\left(f_s\right))\times 10^{-3}$, where the last systematic error is due to the branching fraction of $b\bar{b}\to B^{(*)}_s B^{(*)}_s$. The branching fraction ratio is found to be $\mathcal{B}[B^0_s\to J/\psi\,f'_2(1525)]/\mathcal{B}[B^0_s\to J/\psi\,\phi(1020)]=(21.5\pm 4.9\left(\mathrm{stat}\right) \pm2.6\left(\mathrm{syst}\right))%$. All results are based on a 121.4 fb$^{-1}$ data sample collected at the $\Upsilon(5S)$ resonance by the Belle experiment at the KEKB asymmetric-energy $e^+e^-$ collider.Comment: 7 pages, 6 figures, 4 tables, accepted by Phys. Rev. D
URI
https://journals.aps.org/prd/abstract/10.1103/PhysRevD.88.114006https://repository.hanyang.ac.kr/handle/20.500.11754/70884
ISSN
2470-0029
DOI
10.1103/PhysRevD.88.114006
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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