Enhanced<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="italic">b</mml:mi><mml:mi /><mml:mo>→</mml:mo><mml:mi /><mml:mi mathvariant="italic">sg</mml:mi></mml:math>Decay, Inclusive<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>η</mml:mi></mml:mrow><mml:mrow><mml:mo>′</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>Production, and the Gluon Anomaly

Hou, W.-S.; Tseng, B.

doi:10.1103/physrevlett.80.434

Cited by 110 publications

(125 citation statements)

References 18 publications

(21 reference statements)

Supporting

Mentioning

117

Contrasting

Order By: Relevance

“…One of the suggested mechanisms [2][3][4][5][6][7][8][9][10][11][12][13] to explain this problem considers the process b → sg, g → η ′ g [2][3][4][5][6][7]. This mechanism is based on the anomalous coupling of gg → η ′ which accounts for the large branching ratio for J/ψ → η ′ γ decay.…”

Section: Introductionmentioning

confidence: 99%

On theη′gluonic admixture

Kou

2001

Phys. Rev. D

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

On theη′gluonic admixture

Kou

2001

Phys. Rev. D

View full text Add to dashboard Cite

show abstract

“…the Kη ′ modes seem to have a large singlet contribution, such as coming from the anomaly [19]. Even assuming N eff (LL) = 2 = N eff (LR) = 5 [14] and low m s values, the rates fall 30% − 40% short of observed, while for N eff = 3 one can only account for less than half the observed rate.…”

Section: (A)mentioning

confidence: 91%

Tree-penguin interference and tests forcosγ<0in rareB→PP,

Hou

Yang

2000

Phys. Rev. D

Self Cite

View full text Add to dashboard Cite

Tree-Penguin Interference andTests for cos γ < 0 in Rare B → P P , P V and V V Decays AbstractRecent rare B → P P , P V decay data suggest that factorization holds well if, contrary to current fits, one has cos γ < 0 where γ ≡ arg(V * ub ). We update previous results with light cone sum rule form factors, which seem to work better. We then discuss various B → V V modes as well as the K * η modes. Finding the pattern of ρand K * + η > K * 0 η would strengthen the support for cos γ < 0. The electroweak penguin enhances (suppresses) the K * + ρ 0 (K * 0 ρ 0 ) rate by a factor of 2, and finding K * + ρ 0 ≃ K * + ρ − would be strong evidence for the electroweak penguin.

show abstract

“…The monotonic decrease of the branching ratio from N eff c = ∞ to N eff c = 2 within the "homogeneous" nonfactorizable picture can be understood from the behaviour of the QCD penguin i.e. the destructive interference between a (3,5) and a (4,6) : as N eff c decreases, a (3,5) contributions increase and hence the branching ratios decrease. As we already mentioned before, a 3 and a 5 are N eff c -sensitive while a 3 − a 5 is stable under the variation of N eff c and then the predicted branching ratio is N eff c -stable within the "homogeneous" factorization approach.…”

Section: Phenomenologymentioning

confidence: 99%

“…To explain the abnormally large branching ratio of the semiinclusive process B → η ′ + X, several mechanisms have been advocated [3,4,5,6] and some tests of these mechanisms have been proposed [7]. It is now generally believed that the QCD anomaly [3,4,5] plays a vital role. The understanding of the exclusive B → η ′ K, however, relies on several subtle points.…”

mentioning

confidence: 99%

Exclusive charmless Bs hadronic decays into η′ and η

Tseng

1999

Physics Letters B

Self Cite

View full text Add to dashboard Cite

Using the next-to-leading order QCD-corrected effective Hamiltonian, charmless exclusive nonleptonic decays of the B s meson into η or η ′ are calculated within the generalized factorization approach. Nonfactorizable contributions, which can be parametrized in terms of the effective number of colors N eff c for P P and V P decay modes, are studied in two different schemes: (i) the one with the "homogeneous" structure in which (is assumed, and (ii) the "heterogeneous" one in which the possibility ofis considered, where N eff c (V + A) denotes the effective value of colors for the (V − A)(V + A) penguin operators and N eff c (V − A) for the (V − A)(V − A) ones. For processes depending on the N eff c -stable a i such as B s → (π, ρ)(η ′ , η), the predicted branching ratios are not sensitive to the factorization approach we choose. While for the processes depending on the N eff c -sensitive a i such asB s → ωη ( ′ ) , there is a wide range for the branching ratios depending on the choice of the N eff c involved. We have included the QCD anomaly effect in our calculations and found that it is important forB s → η ( ′ ) η ( ′ ) . The effect of the (cc) → η ′ mechanism is found to be tiny due to a possible CKM-suppression and the suppression in the decay constants except for theB s → φη decay within the "naive" factorization approach, where the internal W diagram is CKM-suppressed and the penguin contributions are compensated.

show abstract

Enhancedb→sgDecay, Inclusiveη′Production, and the Gluon Anomaly

Cited by 110 publications

References 18 publications

On theη′gluonic admixture

On theη′gluonic admixture

Tree-penguin interference and tests forcosγ<0in rareB→PP,

Exclusive charmless Bs hadronic decays into η′ and η

Contact Info

Product

Resources

About