Study of scalar mesons f_0(980) and f_0(1500) from $B \to f_0(980) K$ and $B \to f_0(1500) K$ Decays

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dc.creatorWang, Wei
dc.creatorShen, Yue-Long
dc.creatorLi, Ying
dc.creatorLu, Cai-Dian
dc.date2006-09-08
dc.date2006-11-16
dc.date.accessioned2026-07-07T11:05:42Z
dc.date.available2026-07-07T11:05:42Z
dc.descriptionWithin perturbative QCD approach based on $k_T$ factorization, we analyze the scalar mesons $f_0(980)$ and $f_0(1500)$ productions in B decays. By identifying $f_0(980)$ as the composition of $\bar ss$ and $\bar nn=(\bar uu+\bar dd)/\sqrt2$, we calculate the exclusive decays $B\to f_0(980) K$. We find that the non-factorization $f_0$-emission diagrams can give larger contribution to the branching ratio, than the previous PQCD calculation. Our new results can explain the current experimental data well. Under the assumption of quarkonium dominance, we study the branching ratio of decays $B\to f_0(1500) K$. The results show that in the two-quark picture of $f_0$ meson the contribution from $\bar s s$ component is at the similar size as that from the $\bar n n$ component. Comparing with the data, our results show the preference of $f_0(1500)$ as a member of the ground state of scalar $\bar qq$ nonet. Similar results can also apply to $f_0(1370)$ and $f_0(1710)$, if these mesons are dominated by the quarkonium content. With more experimental data in future, these studies will help us understand the intrinsic characters of these scalar mesons.
dc.description25 pages, 7 figures, more references added
dc.identifierhttps://arxiv.org/abs/hep-ph/0609082
dc.identifierhttp://arxiv.org/abs/hep-ph/0609082
dc.identifierPhys.Rev.D74:114010,2006
dc.identifierdoi:10.1103/PhysRevD.74.114010
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/189286
dc.subjectHigh Energy Physics - Phenomenology
dc.titleStudy of scalar mesons f_0(980) and f_0(1500) from $B \to f_0(980) K$ and $B \to f_0(1500) K$ Decays
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