Nonleptonic two-body decays of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>B</mml:mi><mml:mi>c</mml:mi></mml:msub></mml:math>meson in the light-front quark model and the QCD factorization approach

Choi, Ho-Meoyng; Ji, Chueng-Ryong

doi:10.1103/physrevd.80.114003

Cited by 40 publications

(17 citation statements)

References 93 publications

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“…In the aspect of experiment, the Large Hadron Collider (LHC) has circulated the proton beams since 2009. The number of the produced B c mesons is expected to be 5 × 10 10 [2,3] per year when it runs at the highest luminosity 10 34 cm −2 s −1 and highest energy 14 TeV. So most B c decay channels will be observed with this huge number.…”

Section: Introductionmentioning

confidence: 99%

The study of rare $ {B_c}\to D_{s,d}^{{\left( * \right)}}l\overline{l} $ decays

Wang

et al. 2014

J. High Energ. Phys.

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Abstract:In this paper, we study rare decays B c → D ( * ) s,d ll within the Standard Model. The penguin, box, annihilation, color-favored cascade and color-suppressed cascade contributions are included. Based on our calculation, the annihilation and color-favored cascade diagrams play important roles in the differential branching fractions, forward-backward asymmetries, longitudinal polarizations of the final vector mesons and leptonic longitudinal polarization asymmetries. More importantly, color-favored cascade decays largely enhance the resonance cascade contributions. To avoid the resonance cascade contribution pollution, new cutting regions are put forward.

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Section: Introductionmentioning

confidence: 99%

The study of rare $ {B_c}\to D_{s,d}^{{\left( * \right)}}l\overline{l} $ decays

Wang

et al. 2014

J. High Energ. Phys.

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“…In the forth, fifth and sixth columns of the Table II, as a comparison, we also show the relevant PQCD predictions as given in Ref. [53], and the theoretical predictions obtained by using the relativistic constituent quark model (RCQM) [57], or by using the light-front quark model (LFQM) [58].…”

Section: Fig 4 (A)mentioning

confidence: 99%

“…For simplicity, we generally use the abbreviation ρ = ρ(770), ρ ′ = ρ(1450), ρ ′′ = ρ(1700) in the following sections. By now, the B c → D (s) ρ decay has been studied in several frameworks, for examples, a relativistic constituent quark model based on the Bethe-Salpeter formalism [57], the QCD factorization approach with input from light-front quark model [58] and the PQCD approach [53]. But there are hardly any studies for B c decays with final states ρ ′ and ρ ′′ since the structure of the excited states ρ ′ and ρ ′′ is not yet completely clear [2].…”

Section: Introductionmentioning

confidence: 99%

Quasi-two-body decays $B_c \to D_{(s)} [ρ(770),ρ(1450),ρ(1700) \to ] ππ$ in the perturbative QCD factorization approach

Ma,

Li,

Xiao

2017

Preprint

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In this paper, we studied the quasi-two-body Bc → D (s) [ρ(770), ρ(1450), ρ(1700) →]ππ decays by employing the perturbative QCD (PQCD) factorization approach. The two-pion distribution amplitudes Φππ are applied to include the final-state interactions between the pion pair, while the time-like form factors Fπ(w 2 ) associated with the P -wave resonant states ρ(770), ρ(1450) and ρ(1700) are extracted from the experimental data of the e + e − annihilation. We found that: (a) the PQCD predictions for the branching ratios of the quasi-two-body Bc → D (s) [ρ(770), ρ(1450), ρ(1700) →]ππ decays are in the order of 10 −9 to 10 −5 and the direct CP violations around (10 − 40)% in magnitude; (b) the two sets of the large hierarchy R 1a,1b,1c and R 2a,2b,2c for the ratios of the branching ratios of the considered decays are defined and can be understood in the PQCD factorization approach, while the self-consistency between the quasi-two-body and two-body framework for Bc → D (s) [ρ(770) →]ππ and Bc → D (s) ρ( 770) decays are confirmed by our numerical results; (c) taking currently known B(ρ(1450) → ππ) and B(ρ(1700) → ππ) as input, we extracted the theoretical predictions for B(Bc → Dρ(1450)) and B(Bc → Dρ(1700)) from the PQCD predictions for the decay rates of the quasi-two-body decays Bc → D[ρ(1450), ρ(1700) →]ππ. All the PQCD predictions will be tested in the future experiments.

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“…Until now there is no experimental data for such decays of the B c meson available, so we expect detections in the near future. Theoretically, many methods have been applied to study the semileptonic, nonleptonic, pure leptonic, and the FCNC processes of the B c meson [26][27][28][29][30]. In this work, we will apply the instantaneous Bethe-Salpeter method to calculate the hadronic transition amplitude when both the initial and final mesons are heavy.…”

Section: Introductionmentioning

confidence: 99%

The study of light invisible particles in Bc decays

Wang

Jiang

et al. 2019

J. High Energ. Phys.

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In this paper, we study the light scalar and pseudoscalar invisible particles in the flavor changing neutral current processes of the B c meson. Effective operators are introduced to describe the couplings between quarks and light invisible particles. The Wilson coefficients are extracted from the experimental results of the B and D mesons, which are used to predict the upper limits of the branching fractions of the similar decay processes for the B c meson. The hadronic transition matrix element is calculated with the instantaneously approximated Bethe-Salpeter method. The upper limits of the branching fractions when m χ taking different values are presented. It is found that at some region of m χ , the channel B c → D ( * ) s χχ has the largest upper limit which is of the order of 10 −6 , and for B c → D * s χχ † , the largest value of the upper limits can achieve the order of 10 −5 . Other decay modes, such as B c → D ( * ) χχ ( †) and B c → B ( * ) χχ ( †) , are also considered.

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Nonleptonic two-body decays of theBcmeson in the light-front quark model and the QCD factorization approach

Cited by 40 publications

References 93 publications

The study of rare $ {B_c}\to D_{s,d}^{{\left( * \right)}}l\overline{l} $ decays

The study of rare $ {B_c}\to D_{s,d}^{{\left( * \right)}}l\overline{l} $ decays

Quasi-two-body decays $B_c \to D_{(s)} [ρ(770),ρ(1450),ρ(1700) \to ] ππ$ in the perturbative QCD factorization approach

The study of light invisible particles in Bc decays

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