Nonleptonic weak decays of bottom mesons

Ali, Ahmed; Körner, Jürgen; Krämer, G.; Willrodt, J.

doi:10.1007/bf01440227

Cited by 130 publications

(82 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(8), but with α − iJ replaced by α + iJ , and with definitions given by Eqs. (9)(10)(11)(12)(13)(14), replacing A by A and superscript "−" by "+".…”

Section: A Angular Distributionsmentioning

confidence: 99%

“…(9)(10)(11)(12)(13)(14). This dependence now includes the phase of the resonance amplitude as a function of mass.…”

Section: Interference Effectsmentioning

confidence: 99%

“…(8) and Eqs. (9)(10)(11)(12)(13)(14), for any given set of values (φ J , φ ⊥J , ∆φ J , ∆φ ⊥J ) a simple transformation of phases, for example (2π − φ J , π − φ ⊥J , −∆φ J , −∆φ ⊥J ), gives rise to another set of values that satisfy the above equations in an identical manner. This results in a four-fold ambiguity (two-fold for each of B 0 and B 0 decays).…”

Section: Interference Effectsmentioning

confidence: 99%

“…1. Combined with helicity conservation in strong interactions and spin-flip suppression of relativistic decay products, this leads to certain expectations of the spin alignment in weak B meson decays to light particles with spin, such as ( ) B → ϕ ( ) K * [13]. However, the large fraction of transverse polarization in the ( ) B → ϕ ( ) K * (892) decay measured by BABAR [14] and by Belle [15] indicates a significant departure from the naive expectation of predominant longitudinal polarization.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Time-dependent and time-integrated angular analysis ofB→φKS0π0andφK±π

Aubert¹,

Bóna²,

Karyotakis³

et al. 2008

Phys. Rev. D

View full text Add to dashboard Cite

We perform a time-dependent and time-integrated angular analysis of the decays B 0 → ϕK * (892) 0 , ϕK * 2 (1430) 0 , and ϕ(Kπ) * 0 0 with the final sample of about 465 million BB pairs recorded with the BABAR detector. Twenty-four parameters are investigated, including the branching fractions, CP -violation parameters, and parameters sensitive to final-state interactions. We use the dependence on the Kπ invariant mass of the interference between the scalar and vector or tensor components to resolve discrete ambiguities of the strong and weak phases. We use the time-evolution of the B → ϕK 0 S π 0 channel to extract the CP -violation phase difference ∆φ00 = 0.28 ± 0.42 ± 0.04 between the B and B decay amplitudes. When the B → ϕK ± π ∓ channel is included, the fractions of longitudinal polarization fL of the vector-vector and vector-tensor decay modes are measured to be 0.494 ± 0.034 ± 0.013 and 0.901 +0.046 −0.058 ± 0.037, respectively. This polarization pattern requires the presence of a positive-helicity amplitude in the vector-vector decay from a currently unknown source.6

show abstract

“…(8), but with α − iJ replaced by α + iJ , and with definitions given by Eqs. (9)(10)(11)(12)(13)(14), replacing A by A and superscript "−" by "+".…”

Section: A Angular Distributionsmentioning

confidence: 99%

“…(9)(10)(11)(12)(13)(14). This dependence now includes the phase of the resonance amplitude as a function of mass.…”

Section: Interference Effectsmentioning

confidence: 99%

Section: Interference Effectsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Time-dependent and time-integrated angular analysis ofB→φKS0π0andφK±π

Aubert¹,

Bóna²,

Karyotakis³

et al. 2008

Phys. Rev. D

View full text Add to dashboard Cite

show abstract

“…For H −− to occur quark spin in the emitted vector meson V 2 has to be flipped. Therefore, the amplitude H −− is suppressed by a factor of m 2 /m B [7]. The H ++ amplitude is subject to a further chirality suppression of order m 1 /m B .…”

mentioning

confidence: 98%

Charmless B→VV decays in QCD factorization implications of recent measurement

Cheng

Yang

2001

Physics Letters B

View full text Add to dashboard Cite

In the heavy quark limit, both vector mesons in the charmless B → V V decay should have zero helicity and the corresponding amplitude is proportional to the form factor difference (A 1 − A 2 ).The first observed charmless B → V V mode, B → φK * , indicates that the form factors A 1 (q 2 ) and A 2 (q 2 ) cannot be very similar at low q 2 as shown in some form-factor models. The approach of QCD-improved factorization implies that the nonfactorizable correction to each partial-wave or helicity amplitude is not the same; the effective parameters a i vary for different helicity amplitudes.The leading-twist nonfactorizable corrections to the transversely polarized amplitudes vanish in the chiral limit and hence it is necessary to take into account twist-3 distribution amplitudes of the vector meson in order to have renormalization scale and scheme independent predictions. Branching ratios of B → V V decays are calculated in two different models for form factors, and the predicted decay rates are different by a factor of 1.5 ∼ 2. Owing to the absence of (S − P )(S + P ) penguin contributions to the W -emission amplitudes, tree-dominated decays tend to have larger branching ratios than the penguin-dominated ones.

show abstract

Semileptonic and nonleptonic decays of B c

View full text Add to dashboard Cite

⋆⋆Summary. Using our relativistic constituent quark model we present results on the exclusive nonleptonic and semileptonic decays of the Bc-meson. The nonleptonic decays are studied in the framework of the factorization approximation. We calculate the branching ratios for a large set of exclusive nonleptonic and semileptonic decays of the Bc meson and compare our results with the results of other models.

show abstract

Nonleptonic weak decays of bottom mesons

Cited by 130 publications

References 22 publications

Time-dependent and time-integrated angular analysis ofB→φKS0π0andφK±π

Time-dependent and time-integrated angular analysis ofB→φKS0π0andφK±π

Charmless B→VV decays in QCD factorization implications of recent measurement

Semileptonic and nonleptonic decays of B c

Contact Info

Product

Resources

About