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Huang, Ming-Qiu; Dai, Yong

doi:10.1103/physrevd.64.014034

Cited by 14 publications

(5 citation statements)

References 49 publications

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“…In order to obtain information of the Isgur-Wise functions ξ(y) and ζ(y) with less systematic uncertainty, we can divide the three-point sum rules (32) and (35) with the square roots of relevant two-point sum rules for the decay constants, as many authors did [12,13,[20][21][22]. This cannot only reduce the number of input parameters but also improve the stabilities of the three-point sum rules.…”

Section: Numerical Results and Discussionmentioning

confidence: 99%

“…A double Borel transformation in ω and ω is performed on both sides of the sum rule, in which for simplicity we take the Borel parameters equal [12,13,[20][21][22]: T 1 = T 2 = 2T . It eliminates the subtraction terms in the dispersion integral (30) and improves the convergence of the operator product expansion series.…”

Section: Form Factors From Hqet Sum Rulesmentioning

confidence: 99%

“…They also provide valuable insight in quark dynamics in the nonperturbative domain of QCD. Just because of these reasons, the semileptonic decays of B and B s mesons have been under investigation for many years [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

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$$D_{sJ}(2860)$$ D s J ( 2860 ) from the semileptonic decays of $$B_s$$ B s mesons

Gan¹,

Zhang²,

Huang³

et al. 2015

Eur. Phys. J. C

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Section: Numerical Results and Discussionmentioning

confidence: 99%

Section: Form Factors From Hqet Sum Rulesmentioning

confidence: 99%

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$$D_{sJ}(2860)$$ D s J ( 2860 ) from the semileptonic decays of $$B_s$$ B s mesons

Gan¹,

Zhang²,

Huang³

et al. 2015

Eur. Phys. J. C

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“…[5, 11−14], with the available experimental results as inputs, the semileptonic decays into excited charmed mesons and relevant form factors were investigated in the usual heavy quark effective theory (HQET), including the next leading order corrections of heavy quark expansion and NP effects. The form factors of decays were also studied using QCD sum rules in HQET [15,16]. Additionally, the , , form factors were evaluated via light cone sum rules (LCSR) and applied to the analysis of relevant semileptonic decays [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

form factors in HQEFT and model independent analysis of relevant semileptonic decays with NP effects*

et al. 2023

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The form factors of B(s) decays into P-wave excited charmed mesons (including D* 0(2300), D1(2430), D1(2420), D* 2(2460) and their strange counterparts, denoted generically as D** (s)) are systematically calculated via the QCD sum rules in the framework of heavy quarkeffective field theory (HQEFT). We consider contributions up to the next leading order of heavy quark expansion and give all the relevant form factors, including the scalar and tensor ones which are only related to possible new physics effects. The expressions of form factors in terms of several universal wave functions are derived via the heavy quark expansion. These universal functions can be evaluated through QCD sum rules. Then the numerical results of form factors are presented. With the form factors given here, a model independent analysis of relevant semileptonic decays B(s)→D** (s) l νl is performed, including the contributions from possible new physics effects. Our predictions for the differential decay widths, branching fractions and the ratios of branching fractions R(D** (s)) may be tested by more precise experiments in the future. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Article funded by SCOAP3 and published under licence by Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Science and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd.

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“…For example, it is known that the leptonic decay constants of heavy mesons receive considerable 1/m Q corrections [19,20]. Calculations in different approaches also indicate large 1/m Q corrections to the B → D 1 ν decay rate [14,17,18]. In the case of B → D 0 (D 1 ) ν transitions, one may ask whether the great enhancement of the production rate for 1 2 + states is due to the finite-mass corrections in HQE.…”

Section: Introductionmentioning

confidence: 99%

B\rightarrow D^{\prime }_0 (D^{\prime }_1)\ell \bar{\nu } decays in HQEFT

Wang¹

2010

J. Phys. G: Nucl. Part. Phys.

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Semileptonic B decays into excited charmed mesons D′0 and D′1 are studied in the framework of heavy quark effective field theory (HQEFT) up to the order 1/mQ. They are characterized by a single leading Isgur–Wise function τ and several wavefunctions arising at 1/mQ order. τ and the 1/mQ order functions χb0, χc0 related to the kinetic energy operators are evaluated through the QCD sum rule approach; zero recoil values of the 1/mQ order functions κ1, κ2, κ′1 and κ′2 are extracted from the meson masses, and the branching ratios are found to be suppressed by the 1/mQ corrections. It is concluded that the next leading order wavefunctions can be significant. However, it does not change the previous prediction that the production rate of charmed mesons dominates over that of doublets.

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Subleading Isgur-Wise form factors andO(1/mQ)corrections to the semileptonic decaysB

Cited by 14 publications

References 49 publications

$$D_{sJ}(2860)$$ D s J ( 2860 ) from the semileptonic decays of $$B_s$$ B s mesons

$$D_{sJ}(2860)$$ D s J ( 2860 ) from the semileptonic decays of $$B_s$$ B s mesons

form factors in HQEFT and model independent analysis of relevant semileptonic decays with NP effects*

B\rightarrow D^{\prime }_0 (D^{\prime }_1)\ell \bar{\nu } decays in HQEFT

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