Study of B
                     
                c
              →J/ψ
                     π, η
                     
                c
              
                     π decays with perturbative QCD approach

Sun, J. F.; Du, Dongsheng; Yang, Yueling

doi:10.1140/epjc/s10052-009-0872-y

Cited by 69 publications

(53 citation statements)

References 45 publications

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“…[30,31], the harmonic-oscillator wave functions have been applied to describe the charmonium ground state J=ψ, and the theoretical results agree well with the published experimental data. In Ref.…”

Section: Theoretical Frame and The Wave Functionsupporting

confidence: 58%

“…[33,34], and the wave function of the pseudoscalar meson η c ð2SÞ gets the same access to η c ð1SÞ [30].…”

Section: Theoretical Frame and The Wave Functionmentioning

confidence: 98%

“…For example, in Ref. [30], the authors tried to take the ground charmonium state J=ψ frequency from 0.5 to 0.8 GeV; in Ref. [32] are the transition form factors.…”

Section: Theoretical Frame and The Wave Functionmentioning

confidence: 99%

See 2 more Smart Citations

Study ofBc→ψ(2S)K,η
Duan
¹
,
Yu
²

2018
Phys. Rev. D
3
0
7
0
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We study the B c → ψð2SÞ K, η c ð2SÞ K, ψð3770Þ K decays with perturbative QCD approach based on k T factorization. The new orbitally excited charmonium distribution amplitudes ψð1 3 D 1 Þ based on the Schrödinger wave function of the n ¼ 1, l ¼ 2 state for the harmonic-oscillator potential are employed. By using the corresponding distribution amplitudes, we calculate the branching ratio of B c → ψð2SÞ K, η c ð2SÞ K, ψð3770Þ K decays and the form factors A 0;1;2 and V for the transition B c → ψð1 3 D 1 Þ. We obtain the branching ratio of both B c → ψð2SÞ K and B c → η c ð2SÞ K are at the order of 10 −5 . The effects of two sets of the S-D mixing angle θ ¼ −12°and θ ¼ 27°for the decay B c → ψð3770Þ K are studied first in this paper. Our calculations show that the branching ratio of the decay B c → ψð3770Þ K can be raised from the order of 10 −6 to the order of 10 −5 at the mixing angle θ ¼ −12°, which can be tested by the running LHC-b experiments.

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Section: Theoretical Frame and The Wave Functionsupporting

confidence: 58%

“…[33,34], and the wave function of the pseudoscalar meson η c ð2SÞ gets the same access to η c ð1SÞ [30].…”

Section: Theoretical Frame and The Wave Functionmentioning

confidence: 98%

See 1 more Smart Citation

Study ofBc→ψ(2S)K,η
Duan
¹
,
Yu
²

2018
Phys. Rev. D
3
0
7
0
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“…The LHCb collaboration has started comprehensive experimental studies of the decays [27], and some phenomenological studies can be found in refs. [28][29][30][31][32].…”

Section: Jhep12(2017)012mentioning

confidence: 99%

Relativistic corrections to light-cone distribution amplitudes of S-wave Bc mesons and heavy quarkonia

Wang

Yang

et al. 2017

J. High Energ. Phys.

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In collinear factorization, light-cone distribution amplitudes (LCDAs) are key ingredients to calculate the production rate of a hadron in high energy exclusive processes. For a doubly-heavy meson system (such as B c , J/ψ, Υ etc), the LCDAs contain perturbative scales that can be integrated out and then are re-factorized into products of perturbatively calculable distribution parts and non-relativistic QCD matrix elements. In this re-factorization scheme, the LCDAs are known at next-to-leading order in the strong coupling constant α s and at leading order in the velocity expansion. In this work, we calculate the O(v 2 ) corrections to twist-2 LCDAs of S-wave B c mesons. These results are applicable to heavy quarkonia like η c,b , J/ψ and Υ by setting m b = m c . We apply these relativistically corrected LCDAs to study their inverse moments and a few Gegenbauer moments which are important for phenomenological study. We point out that the relativistic corrections are sizable, and comparable with the next-to-leading order radiative corrections. These results for LCDAs are useful in future theoretical analyses of the productions of heavy quarkonia and B c mesons.

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“…These methods can be assigned according to the following four types. (i) The perturbative QCD * Electronic address: rlzhu@njnu.edu.cn † Electronic address: xiaozhenjun@njnu.edu.cn (PQCD) approach in which the form factors can be computed in terms of the perturbative hard kernels and the nonperturbative meson wave functions with the harmonic oscillator form [4] or the transverse momentum dependent form [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Relativistic corrections to the form factors of Bc into S -wave charmonium

Zhu

Han

et al. 2017

Phys. Rev. D

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We investigate the form factors of Bc meson into S-wave charmonium within the nonrelativistic QCD effective theory and obtain the next-to-leading order relativistic corrections to the form factors, where both the Bc meson and the charmonium are treated as the nonrelativistic bound states. Treating the charm quark as a light quark in the limit mc/m b → 0, some form factors are identical at the maximum recoil point, which are consistent with the predictions in the heavy-quark effective theory and the large-energy effective theory. Considering that the branching ratios of B have been measured by the LHCb and ATLAS Collaborations recently, we employ the form factors of Bc meson into S-wave charmonium at the next-to-leading order accuracy to these two decay channels and obtain more precise predictions of their decay rates. Numerical results indicate that the factorizable diagrams dominate the contribution in these two channels, while the colour-suppressed and the annihilation diagrams contribute less than 10 percent. Our results are consistent with the LHCb and ATLAS data.

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Study of B c →J/ψ π, η c π decays with perturbative QCD approach

Abstract: The B c → J/ψπ, η c π decays are studied with the perturbative QCD approach. It is found that the form factors A

Cited by 69 publications

References 45 publications

Study ofBc→ψ(2S)K,η
Duan
¹
,
Yu
²

2018
Phys. Rev. D
3
0
7
0
View full text Add to dashboard Cite

Study ofBc→ψ(2S)K,η
Duan
¹
,
Yu
²

2018
Phys. Rev. D
3
0
7
0
View full text Add to dashboard Cite

Relativistic corrections to light-cone distribution amplitudes of S-wave Bc mesons and heavy quarkonia

Relativistic corrections to the form factors of Bc into S -wave charmonium

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Study of B c →J/ψ π, η c π decays with perturbative QCD approach

Abstract: The B c → J/ψπ, η c π decays are studied with the perturbative QCD approach. It is found that the form factors A

Cited by 69 publications

References 45 publications

Study ofBc→ψ(2S)K,ηDuan1, Yu2 2018Phys. Rev. D3070View full textAdd to dashboardCite

Study ofBc→ψ(2S)K,ηDuan1, Yu2 2018Phys. Rev. D3070View full textAdd to dashboardCite

Relativistic corrections to light-cone distribution amplitudes of S-wave Bc mesons and heavy quarkonia

Relativistic corrections to the form factors of Bc into S -wave charmonium

Contact Info

Product

Resources

About

Study ofBc→ψ(2S)K,η
Duan
¹
,
Yu
²

2018
Phys. Rev. D
3
0
7
0
View full text Add to dashboard Cite

Study ofBc→ψ(2S)K,η
Duan
¹
,
Yu
²

2018
Phys. Rev. D
3
0
7
0
View full text Add to dashboard Cite