B
 →
 K
 0
 *
 (1430)
 K
 Decays in Perturbative QCD Approach

Liu, Xin; Xiao, Z. J.

doi:10.1088/0253-6102/53/3/26

Cited by 19 publications

(5 citation statements)

References 43 publications

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“…is obtained by the PDG [47]. This mode has been studied in both pQCD and QCDF approaches with the predictions in pQCD [51] and in QCDF [52], where S1 and S2 denote two different scenarios for the quark content of the scalar meson. All scalar mesons are made of qq quarks in scenario 1, while in scenario 2 the scalar mesons above 1 GeV are lowest-lying qq scalar states and the light scalar mesons are four-quark states.…”

Section: ϕð1020þ Productionmentioning

confidence: 99%

Branching fractions and CP violation in B−→K+K−π−

Cheng

Chua

2020

Phys. Rev. D

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We present in this work a study of tree-dominated charmless three-body decays of B mesons, B − → K þ K − π − and B − → π þ π − π − , within the factorization approach. The main results are: (i) There are two distinct sources of nonresonant contributions: one arises from the b → u tree transition and the other from the nonresonant matrix element of scalar densities hM 1 M 2 jq 1 q 2 j0i NR. It turns out that even for treedominated three-body decays, dominant nonresonant contributions originate from the penguin diagram rather than from the b → u tree process, as implied by the large nonresonant component observed recently in the π − K þ system which accounts for one third of the B − → K þ K − π − rate. (ii) The calculated branching fraction of B − → f 2 ð1270Þπ − → K þ K − π − is smaller than the LHCb by a factor of ∼7 in its central value, but the predicted BðB − → f 2 ð1270Þπ − → π þ π − π − Þ is consistent with the data. Branching fractions of B − → f 2 ð1270Þπ − extracted from the LHCb measurements of these two processes also differ by a factor of seven! Therefore, it is likely that the f 2 ð1270Þ contribution to B − → K þ K − π − is largely overestimated experimentally. Including 1=m b power corrections from penguin annihilation inferred from QCD factorization (QCDF), a sizable CP asymmetry of 25% in the f 2 ð1270Þ component agrees with experiment. (iii) A fraction of 5% for the ρð1450Þ component in B − → π þ π − π − is in accordance with the theoretical expectation. However, a large fraction of 30% in B − → K þ K − π − is entirely unexpected. This issue needs to be clarified in the future. (iv) We study final-state ππ ↔ KK rescattering and find that the rescattering contributions to both B − → K þ K − π − and B − → π þ π − π − seem to be overestimated experimentally by a factor 4. (v) Using the QCDF expression for the B − → σ=f 0 ð500Þπ − amplitude to study the decay B − → σπ − → π þ π − π − , the resultant branching fraction and CP violation of 15% agree with experiment. (vi) CP asymmetry for the dominant quasi-two-body decay mode B − → ρ 0 π − was found by the LHCb to be consistent with zero in all three S-wave models. In the QCDF approach, 1=m b power corrections, namely, penguin annihilation and hard spectator interactions contribute destructively to A CP ðB − → ρ 0 π − Þ to render it consistent with zero. (vii) A significant CP asymmetry has been seen in the ρ 0 ð770Þ region for positive-and negative-helicity angle cosines. Considering the low π þ π − invariant mass region of the B þ → π þ π þ π − Dalitz plot of CP asymmetries divided into four zones, the pattern of CP violation in each zone is well described by the interference between ρð770Þ and σð500Þ as well as the nonresonant background.

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Section: ϕð1020þ Productionmentioning

confidence: 99%

Branching fractions and CP violation in B−→K+K−π−

Cheng

Chua

2020

Phys. Rev. D

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“…[14] However, these methods have typical disadvantages including usage of toxic reagents, high temperature and long reaction time, low yields due to the formation of tertiary alcohols as side products and inferior tolerance of functional groups. [15,16] Recently, palladium-catalysed cross-coupling of boronic acids with carboxylic derivatives has been developed as a powerful protocol for the regioselective synthesis of aromatic ketones. [17][18][19][20][21][22][23][24][25][26] This approach is superior to the previous methods in terms of reaction conditions, selectivity, efficiency and functional group compatibility and also non-toxicity, thermal, air and moisture stability and commercial availability of organoboron compounds as starting materials.…”

Section: Introductionmentioning

confidence: 99%

“…[31] Bumagin and co-workers described the synthesis of aromatic ketones via ligandless and phosphine-free palladium-catalysed coupling of acyl chlorides with arylboronic acids in aqueous acetone. [32] There are several alternative procedures for this cross-coupling reaction under various conditions, such as in aqueous media, [33,34] anhydrous reaction [35][36][37] and solvent-free conditions. [38] Generally, the combination of palladium catalysts with phosphine and carbene ligands results in high efficiency in coupling reactions.…”

Section: Introductionmentioning

confidence: 99%

A versatile method for the synthesis of diaryl and alkyl aryl ketones via palladium‐catalysed cross‐coupling reaction of arylboronic acids with acyl chlorides

Rafiee

Hajipour

2015

Applied Organom Chemis

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An efficient catalytic system using 1‐benzyl‐4‐aza‐1‐azoniabicyclo[2.2.2]octane chloride and PdCl2 was developed for the cross‐coupling reaction of arylboronic acids with acyl chlorides. The catalytic amount of this homogeneous catalytic system affords the corresponding diaryl and alkyl aryl ketones in good to excellent yields under mild reaction conditions. Copyright © 2015 John Wiley & Sons, Ltd.

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“…[35] Despite the potential utility of these methods, as boronic acids have relatively low toxicity, and are stable to heat, air and moisture, with many being commercially available, the use of expensive, moisturesensitive phosphane-donating ligands requiring high-temperature conditions under volatile organic solvents has encouraged chemists to explore alternative green protocols. Recently, Zhang and co-workers established that Suzuki-type cross-coupling of acid chloride and arylboronic acid could be carried out efficiently in water in the presence of Pd(OAc) 2 and either PEG or [bmim] [PF 6 ] [36] or surfactants, [37] with a good recycling of the catalytic system. Bumagin [24,25,38] and Li [39] reported that the presence of water in acetone as co-solvent delivers improved efficiency, making the method more useful and attractive.…”

Section: Introductionmentioning

confidence: 99%

Ligandless heterogeneous palladium: an efficient and recyclable catalyst for Suzuki‐type cross‐coupling reaction

Mondal

Bora

2014

Applied Organom Chemis

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A mild and efficient ligand‐free Suzuki‐type cross‐coupling reaction of benzoyl chlorides and arylboronic acids catalyzed by heterogeneous Pd/C was developed. Benzoyl chlorides undergo cross‐coupling with electronically diverse arylboronic acids to give biaryl ketones in excellent yield, under aqueous media and optimum temperature. The application of 3 mol% of 10 wt% Pd/C to the cross‐coupling delivers utmost efficiency, and could be reused up to many consecutive cycles without any loss in activity. This method proceeds under aqueous media and a recyclable catalytic system, offering an environmentally benign alternative to the existing protocols. Copyright © 2014 John Wiley & Sons, Ltd.

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B → K ₀ ^* (1430) K Decays in Perturbative QCD Approach

Abstract: We calculate the branching ratios and CP-violating asymmetries for , which are consistent with currently available experimental upper limits. We also predict large CP-violating asymmetries in these decays:, which can be tested by the forthcoming B meson experiments.

Cited by 19 publications

References 43 publications

Branching fractions and CP violation in B−→K+K−π−

Branching fractions and CP violation in B−→K+K−π−

A versatile method for the synthesis of diaryl and alkyl aryl ketones via palladium‐catalysed cross‐coupling reaction of arylboronic acids with acyl chlorides

Ligandless heterogeneous palladium: an efficient and recyclable catalyst for Suzuki‐type cross‐coupling reaction

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B → K 0 * (1430) K Decays in Perturbative QCD Approach

Abstract: We calculate the branching ratios and CP-violating asymmetries for , which are consistent with currently available experimental upper limits. We also predict large CP-violating asymmetries in these decays:, which can be tested by the forthcoming B meson experiments.

Cited by 19 publications

References 43 publications

Branching fractions and CP violation in B−→K+K−π−

Branching fractions and CP violation in B−→K+K−π−

A versatile method for the synthesis of diaryl and alkyl aryl ketones via palladium‐catalysed cross‐coupling reaction of arylboronic acids with acyl chlorides

Ligandless heterogeneous palladium: an efficient and recyclable catalyst for Suzuki‐type cross‐coupling reaction

Contact Info

Product

Resources

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B → K ₀ ^* (1430) K Decays in Perturbative QCD Approach