Decays of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>B</mml:mi></mml:mrow><mml:mrow><mml:mi>c</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>meson

Chang, Chao-Hsi; Chen, Yuqi

doi:10.1103/physrevd.49.3399

Cited by 270 publications

(341 citation statements)

References 41 publications

(42 reference statements)

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“…[5,7,9,42]; this indicates that the harmonic-oscillator wave functions for radially excited 2S charmonium states are reasonable and applicable. It is clear that the branching fraction of the decay mode B c → ψð1 3 D 1 ÞK decreases with the increasing parameter ω 1D , and its change trend becomes slowly as ω 1D ≥ 0.5 GeV, so we take the branching fraction result at ω 1D ¼ 0.5 GeV as the preferred value.…”

Section: Numerical Evaluation and Discussionmentioning

confidence: 97%

“…[6], the authors used ISGW2 quark model to research the production of radially excited charmonium mesons in B c decays; the relativistic (constituent) quark model, the potential model, the QCD relativistic potential model, and the improved instantaneous Bethe-Salpeter equation and Mandelstam approach were adopted in Refs. [7][8][9][10][11], respectively. However, it is regrettable that all of these computations are based on a so-called naive factorization assumption, with various form factor inputs.…”

Section: Introductionmentioning

confidence: 99%

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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: Numerical Evaluation and Discussionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Study ofBc→ψ(2S)K,η
Duan
¹
,
Yu
²

2018
Phys. Rev. D
3
0
7
0
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“…It will offer a new window for study the weak decay mechanism of heavy flavors and test various nonperturbative models for bound states. The leptonic decay of B c to one heavy meson has been studied in various models [20,21]. In this section we study the leptonic decay of B + c into two pions.…”

Section: Decays Of B C Into a Lepton Pair Combined With Two Pionsmentioning

confidence: 99%

“…The first part of this section is devoted to leptonic decay of B + c into two hard pions, the decay into two soft pions is studied in the second part. with f Bc = 480MeV taken from [20]. Other parameters take the following values: M Bc = 6.4GeV, |V bc | = 4.0 × 10 −2 , G F = 1.166 × 10 −5 GeV −2 , α s (M Bc ) = 0.24.…”

Section: Decays Of B C Into a Lepton Pair Combined With Two Pionsmentioning

confidence: 99%

Exclusive decay of 1-- quarkonia and B c meson into a lepton pair combined with two pions

2002

Eur. Phys. J. C

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We study the exclusive decay of J/Ψ, Υ and B c into a lepton pair combined with two pions in the two kinematic regions. One is specified by the two pions having large momenta, but a small invariant mass. The other is specified by the two pions having small momenta. In both cases we find that in the heavy quark limit the decay amplitude takes a factorized form, in which the nonperturbative effect related to heavy meson is represented by a NRQCD matrix element. The nonperturbative effects related to the two pions are represented by some universal functions characterizing the conversion of gluons into the pions. Using models for these universal functions and chiral perturbative theory we are able to obtain numerical predictions for the decay widths. Our numerical results show that the decay of J/ψ is at order of 10 −5 with reasonable cuts and can be observed at BES II and the proposed BES III and CLEO-C. For other decays the branching ratio may be too small to be measured.

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“…g) Precise predictions for the decay rate in the vicinity of zero-recoil could be obtained in the framework of lattice QCD [15] or even potential models [16] of hadrons.…”

Section: Extraction Of |V Cb |mentioning

confidence: 99%

Prospects for the extraction of ∣ V cb ∣ from B c → J /ψμ + ν decays at LHC

Galdón¹,

Sanchis-Lozano²

1996

Zeitschrift f�r Physik C Particles and Fields

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We discuss the possibility of extracting |V cb | from the future measurement at LHC of the B c → J/ψ µ + ν decay rate followed by the leptonic decay J/ψ → µ + µ − . We examine in detail the influence of the measurement of the muons' momenta and vertex reconstruction in the final uncertainty of |V cb |, as well as the required theoretical inputs at both the production and weak decay level, and their reliability in this regard. We stress the relevance of a rigorous description of the fragmentation contributions to inclusive production at large transverse momentum of heavy quarkonia in pp collisions.IFIC/95-31 FTUV/95-29 April 3, 2018 IntroductionThe interplay between theory and experiment, inherent to all branches of science, becomes crucial in high-energy physics at present. Indeed, despite any (always welcome) unexpected discovery, the required investment of money and time demands well-defined aims and physical objectives from the theoretical side long time before the start of real data-taking. This is particularly apparent at LHC experiments, in one of which (ATLAS) one of us (M.A.S.L.) is currently involved. On the other hand, it is a task of theorists to survey all those theoretical topics compatible with the ultimate goals of an experiment, keeping connection with a "realistic" experimental point of view. This is, in fact, one of the underlying motivations of the present work.In particular, it has been recently pointed out the feasibility of the observation of B c mesons in the ATLAS experiment [1]. With respect to their production rate, setting the bb cross section equal to 500 µb and assuming the fragmentation probability of a b quark into a B c meson of the order of 10 −3 [2], the expected number of B c mesons at "low" luminosity 1 is about 10 10 per year (10 7 s) corresponding to an integrated luminosity of 10 fb −1 . * Research partially supported by CICYT under grant AEN 93-0234 † galdon@evalvx.ific.uv.es ‡ mas@evalvx.ific.uv.es 1 It is foreseen that during the first years, LHC will run at L ≈ 1×10 33 cm −2 s −1 . Later on, the luminosity will increase

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Decays of theBcmeson

Abstract: The decays of the B, meson are calculated systematically by introducing a suitable approach. The obtained results are discussed and compared with those obtained by other approaches. PACS numberk): 14.40.Nd, 13.20.He, 13.25.Hw, 14.40.Lb 0556-2821/94/49(7)/3399(13)/%06.00 -49 3399

Cited by 270 publications

References 41 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

Exclusive decay of 1-- quarkonia and B c meson into a lepton pair combined with two pions

Prospects for the extraction of ∣ V cb ∣ from B c → J /ψμ + ν decays at LHC

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Decays of theBcmeson

Abstract: The decays of the B, meson are calculated systematically by introducing a suitable approach. The obtained results are discussed and compared with those obtained by other approaches. PACS numberk): 14.40.Nd, 13.20.He, 13.25.Hw, 14.40.Lb 0556-2821/94/49(7)/3399(13)/%06.00 -49 3399

Cited by 270 publications

References 41 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

Exclusive decay of 1-- quarkonia and B c meson into a lepton pair combined with two pions

Prospects for the extraction of ∣ V cb ∣ from B c → J /ψμ + ν decays at LHC

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