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Asatrian, H. M.; Bieri, K.; Greub, Christoph; Hovhannisyan, A.

doi:10.1103/physrevd.66.094013

Cited by 85 publications

(96 citation statements)

References 59 publications

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“…On the other hand the semi-inclusive zero is in the same region as in the inclusive case [39], where virtual effects together with hard gluon bremsstrahlung encoded in functions ω 710 and ω 910 [40] also induce a negative shift on the zero.…”

Section: Exclusive Radiative B Decaysmentioning

confidence: 69%

Heavy-to-light currents at NNLO in SCET and semi-inclusive decay

et al. 2011

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We perform the two-loop matching calculation for heavy-to-light currents from QCD onto soft-collinear effective theory for the complete set of Dirac structures. The newly obtained matching coefficients enter several phenomenological applications, of which we discuss heavy-to-light form factor ratios and exclusive radiative decays, as well as the semi-inclusive decayB → X s ℓ + ℓ − . For this decay, we observe a significant shift of the forward-backward asymmetry zero and find q 2 0 = (3.34 +0.22 −0.25 ) GeV 2 for an invariant mass cut m cut X = 2.0 GeV.

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Section: Exclusive Radiative B Decaysmentioning

confidence: 69%

Heavy-to-light currents at NNLO in SCET and semi-inclusive decay

et al. 2011

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“…This inclusive decay is theoretically wellexplored. The NNLL QCD calculations for the branching ratio [58][59][60][61][62][63][64] and the forwardbackward asymmetry [65][66][67][68][69][70] have been finalised some time ago by an effort of several research groups. Even electromagnetic corrections have been already calculated [69,71,72].…”

Section: Cross-check With the Inclusive Modementioning

confidence: 99%

On the LHCb anomaly in B → K * ℓ + ℓ −

Hurth

Mahmoudi

2014

J. High Energ. Phys.

127

131

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Abstract:The latest LHCb angular analysis of the rare decay B → K * µ + µ − shows some discrepancies from the SM up to the 3.7σ level. There is a consistent new physics explanation of these anomalies, while it is also reasonable that these anomalies are just statistical fluctuations and/or a direct consequence of underestimated hadronic uncertainties. We briefly discuss possible cross-checks of the various hypotheses with an analysis of the inclusive B → X s + − based on the data collected by the B factories Babar and Belle and also based on future opportunities at SuperBelle. We also present a global analysis of the latest LHCb data under the hypothesis of Minimal Flavour Violation. The latter is an important benchmark scenario for new physics models. Any measurements beyond the MFV bounds and relations unambiguously indicate the existence of new flavour structures next to the Yukawa couplings of the Standard Model. However, if new physics is responsible for these discrepancies, we show it is compatible with the MFV hypothesis, so no new flavour structures are needed. Moreover, we analyse the impact of the correlations between the observables based on a Monte Carlo study.

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“…The phenomenological impact of the NNLL contributions on the FB asymmetry is also significant [70,71]. The position of the zero of the FB asymmetry, defined by A F B (ŝ 0 ) = 0, is particularly interesting to determine relative sign and magnitude of the Wilson coefficients C 7 and C 9 and it is therefore extremely sensitive to possible new physics effects.…”

Section: Ltmentioning

confidence: 99%

“…The position of the zero of the FB asymmetry, defined by A F B (ŝ 0 ) = 0, is particularly interesting to determine relative sign and magnitude of the Wilson coefficients C 7 and C 9 and it is therefore extremely sensitive to possible new physics effects. The previous NLL result, where the error is determined by the scale dependence, is now modified by the NNLL contributions [70,71]:…”

Section: Ltmentioning

confidence: 99%

On Exclusive and Inclusive Rare B Decays: CKM Phenomenology and New Physics Reach

Hurth¹,

Lunghi²

2003

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We report recent results in rare B decays. Our focus will be on b → dγ and b → sℓ + ℓ − transitions. We discuss their impact on the CKM phenomenology and their role within our search for new physics. In particular, we analyse the impact of a recent lattice QCD estimate of the B → K * form factor at zero recoil. We also briefly discuss the presently available optimal theoretical tools for the inclusive and exclusive modes.

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Next-to-next-to leading logarithmic corrections to the angular distribution and to the forward-backward asymmetries inb→Xs
H. M. Asatrian
¹
,
K. Bieri
²
,
Christoph Greub
³

et al.

Cited by 85 publications

References 59 publications

Heavy-to-light currents at NNLO in SCET and semi-inclusive decay

Heavy-to-light currents at NNLO in SCET and semi-inclusive decay

On the LHCb anomaly in B → K * ℓ + ℓ −

On Exclusive and Inclusive Rare B Decays: CKM Phenomenology and New Physics Reach

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Next-to-next-to leading logarithmic corrections to the angular distribution and to the forward-backward asymmetries inb→XsH. M. Asatrian1, K. Bieri2, Christoph Greub3 et al.

Cited by 85 publications

References 59 publications

Heavy-to-light currents at NNLO in SCET and semi-inclusive decay

Heavy-to-light currents at NNLO in SCET and semi-inclusive decay

On the LHCb anomaly in B → K * ℓ + ℓ −

On Exclusive and Inclusive Rare B Decays: CKM Phenomenology and New Physics Reach

Contact Info

Product

Resources

About

Next-to-next-to leading logarithmic corrections to the angular distribution and to the forward-backward asymmetries inb→Xs
H. M. Asatrian
¹
,
K. Bieri
²
,
Christoph Greub
³

et al.