Revisiting charmless hadronic B decays to scalar mesons

Cheng, Hai-Yang; Chua, Chun-Khiang; Yang, Kwei-Chou; Zhang, Zhi-Qing

doi:10.48550/arxiv.1303.4403

Cited by 15 publications

(45 citation statements)

References 38 publications

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“…For differential decay widths, integrating over a range of m 2 e ≤ q 2 ≤ (m D − m M ) 2 , we obtain the decay widths and hence the decay branching ratios, the numerical results of which are shown in Tables VI and VII. In Table VI, for D 0(+) → a −(0) 0 (980)e + ν e , it is easy to see that our results are well consistent with those of BES III [1] within the error, where [43] B(a 0 (980) → ηπ) = 0.845 ± 0.017.…”

Section: Branching Ratiossupporting

confidence: 83%

Study of form factors and branching ratios for $D\rightarrow S,Al\bar{ν_{l}}$ with light-cone sum rules

Huang,

Sun,

Gao

et al. 2021

Preprint

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We systematically study the semileptonic decay process of D → S , Al νl (l = e, µ) by light-cone sum rules (LCSR) with chiral currents, calculate the form factors containing only the contribution of the leading twist light-cone distribution amplitudes (LCDAs). For scalar mesons a 0 (980) and a 0 (1450), we take them as q q states. For axial-vector meson, we study a 1 (1260)(1 3 p 1 ) and b 1 (1235)(1 1 p 1 ). Based on the results of these form factors, we further present the branching ratios of these semileptonic decay processes. The numerical results for D → a 0 (980), b 1 (1235)l νl are in good agreement with experiments and that for D → a 0 (1450), a 1 (1260)l νl processes are expected to be tested experimentally in the future.

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Section: Branching Ratiossupporting

confidence: 83%

Study of form factors and branching ratios for $D\rightarrow S,Al\bar{ν_{l}}$ with light-cone sum rules

Huang,

Sun,

Gao

et al. 2021

Preprint

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“…However, at the hadronic level, there are other interfering contributions with different weak phases. One of them associated with the interference between intermediate states, in three-or-more-body decays [8][9][10][11][12]. In general, interference occurs when two resonant intermediate states, with different weak phases, share the same kinematical region and hadronic final state.…”

mentioning

confidence: 99%

CP violation and CPT invariance in B+- decays with final state interactions

Bediaga,

Frederico,

Lourenço

2013

Preprint

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We show that, besides the usual short distance contribution for CP violation, final state interactions together with CP T invariance can play an important role in the recent observation of CP violation in three-body charmless B ± decays. A significant part of the observed CP asymmetry distribution in the Dalitz plot is located in a region where hadronic channels are strongly coupled. We illustrate our discussion comparing the recent observation of CP violation in the B ± → K ± K + K − and B ± → K ± π + π − phase space, with a calculation based on ππ → KK scattering.

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“…As for the light scalar meson wave function, the twist-2 and twist-3 LCDAs for different components could be combined into a single matrix element [4][5][6]…”

Section: Formalism and Wave Functionmentioning

confidence: 99%

“…The S-II corresponds to the case that light scalar mesons are four-quark bound states, while all scalar mesons are made of two quarks in S-I. Although S-II is much preferred [4][5][6][7][8][9], the final conclusion has not been confirmed yet.…”

Section: Introductionmentioning

confidence: 99%

“…[3]. On the theoretical side, two-body B meson decays to scalar mesons have been explored widely in different approaches, such as the QCD factorization (QCDF) [4][5][6][25][26][27] and the perturbative QCD approach (PQCD) [28][29][30][31][32][33][34][35][36][37]. Combinations of the well measured experimental data with the precise theoretical predictions provide us another way to determine the nature of the scalar mesons.…”

Section: Introductionmentioning

confidence: 99%

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Charmless $B_s\to V S$ Decays in PQCD Approach

Liu,

Zou,

et al. 2021

Preprint

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In this work, we investigate the B s → V S decays in the perturbative QCD approach, where V and S denote the vector meson and scalar meson respectively. Based on the two-quark structure, considering two different scenarios for describing the scalar mesons, we calculate the branching fractions and the direct CP asymmetries of all B s → V S decays. Most branching fractions are predicted to be at 10 −7 to 10 −5 , which could be measured in the LHCb and Belle-II experiments, especially for these color-allowed B s → κ(800)(K * 0 (1430))K * decays. It is found that the branching fractions of B s → K * 0 0 (1430) K * 0 and B s → K * + 0 (1430) K * − are very sensitive to the scenarios, which can be used to determine whether K * 0 0 (1430) belongs to the ground state or the first excited state, if the data were available. We also note that some decays have large direct CP asymmetries, some of which are also sensitive to the scenarios, such as the B s → a + 0 (1450)K * − and the B s → f 0 (1500)K * 0 decays. Since the experimental measurements of B s → V S decays are on the way, combined with the available data in the future, we expect the theoretical predictions will shed light on the structure of the scalar mesons.

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Revisiting charmless hadronic B decays to scalar mesons

Cited by 15 publications

References 38 publications

Study of form factors and branching ratios for $D\rightarrow S,Al\bar{ν_{l}}$ with light-cone sum rules

Study of form factors and branching ratios for $D\rightarrow S,Al\bar{ν_{l}}$ with light-cone sum rules

CP violation and CPT invariance in B+- decays with final state interactions

Charmless $B_s\to V S$ Decays in PQCD Approach

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