Summing Sudakov logarithms in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mrow><mml:mover><mml:mrow><mml:mi>B</mml:mi></mml:mrow><mml:mrow><mml:mo>→</mml:mo></mml:mrow></mml:mover></mml:mrow></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi>X</mml:mi></mml:mrow><mml:mrow><mml:mi>s</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mi>γ</mml:mi></mml:math>in effective field theory

Bauer, C.; Fleming, Sean; Luke, Michael

doi:10.1103/physrevd.63.014006

Cited by 1,008 publications

(1,425 citation statements)

References 58 publications

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“…[40]. The Lagrangian of this EFT is given by the sum of the SCET Lagrangian [25][26][27][28] and a term that specifies the interactions of collinear partons in QCD matter:…”

Section: Theoretical Frameworkmentioning

confidence: 99%

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Medium-induced parton splitting kernels from Soft Collinear Effective Theory with Glauber gluons

2012

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We derive the splitting kernels for partons produced in large Q 2 scattering processes that subsequently traverse a region of strongly-interacting matter using a recently-developed effective theory SCETG. We include all corrections beyond the small-x approximation, consistent with the power counting of SCETG. We demonstrate how medium recoil, geometry and expansion scenarios, and phase space cuts can be implemented numerically for phenomenological applications. For the simplified case of infinite transverse momentum kinematics and a uniform medium, we provide closed-form analytic results that can be used to validate the numerical simulations.

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“…[40]. The Lagrangian of this EFT is given by the sum of the SCET Lagrangian [25][26][27][28] and a term that specifies the interactions of collinear partons in QCD matter:…”

Section: Theoretical Frameworkmentioning

confidence: 99%

“…In particular, Soft Collinear Effective Theory [25][26][27][28] (SCET) is an effective theory for QCD that describes the dynamics of highly energetic partons. It has been successfully applied to improve the theoretical accuracy in the evaluation of high energy cross sections at lepton [29]- [32] and hadron colliders [33]- [35].…”

Section: Introductionmentioning

confidence: 99%

Medium-induced parton splitting kernels from Soft Collinear Effective Theory with Glauber gluons

2012

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“…Recently, beyond naive factorization, B → K * have been investigated with the QCD factorization [31] framework in [32,33], and then studied with Soft Collinear Effective Theory (SCET) [34] in Ref. [35].…”

Section: Sm Valuementioning

confidence: 99%

ProbeR-parity violating supersymmetry effects inB→K(*)ℓ+ℓ−

Wang

Yang

2006

Phys. Rev. D

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We study the decays B → K ( * ) ℓ + ℓ − and B s → ℓ + ℓ − (ℓ = e, µ) in the minimal supersymmetric standard model with R-parity violation (RPV). From the recent measurements of their branching ratios, we have derived new upper bounds on the relevant RPV coupling products, which are stronger than the existing ones. Using the constrained parameter space, we predict the RPV effects on the forward-backward asymmetries A F B (B → K ( * ) ℓ + ℓ − ) and the branching ratios B(B s → ℓ + ℓ − ). Our results of the forward-backward asymmetries agree with the recent experiment data. It is also found that B(B s → ℓ + ℓ − ) could be enhanced several orders by the RPV sneutrino exchange.The RPV effects on the dilepton invariant mass spectra of B → K ( * ) ℓ + ℓ − and the normalized A F B (B → K ( * ) ℓ + ℓ − ) are studied in detail. Our results could be used to probe RPV effects and will correlate with searches for direct RPV signals at LHC.

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“…A similar quantity of interest is the matrix element between different states, say, a Bmeson and a π-meson, of a non-local quark bilinear (with properly chosen flavor quantum numbers). This generalized parton distribution (GPD) plays a central role in the recently established [19] soft pion theorems for certain soft factors in the Soft Collinear Effective Theory (SCET) [20,21,22,23,24,25,26,27,28,29,30,31,32] description of exclusive B decays to final states containing, possibly, several soft pions. This, in turn, is useful in extending the applicability of SCET to the calculation of non-resonant final states, as in, for example, B → Kπℓℓ [33] or B → Kπγ [34,35].…”

Section: Introductionmentioning

confidence: 99%

Shape and soft functions of HQET and SCET in the 't Hooft model

Grinstein

2006

Nuclear Physics B

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The main application of Heavy Quark Effective Theory (HQET) and of Soft Collinear Effective Theory (SCET) is in establishing factorization theorems for exclusive and semi-inclusive decays of heavy mesons. However, the calculation of the soft factors from the HQET or SCET factorization relations is, as usual, impeded by the non-perturbative aspect of the strong interactions. In the hope of gaining some insights into some of these quantities we compute them in the 't Hooft model. We find that the B-meson shape function is exactly given by the square of the B-meson light-cone wave-function. The structure of the B − π structure function is more complicated: it is given by the product of wave-functions or by a resonant sum depending on the kinematics. The result simplifies dramatically in the chiral limit, where it can be compared with general arguments based on Heavy Meson-Chiral Perturbation theory. No attempt is made to use these results for applications to phenomenology.

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Summing Sudakov logarithms inB→Xsγin effective field theory

Cited by 1,008 publications

References 58 publications

Medium-induced parton splitting kernels from Soft Collinear Effective Theory with Glauber gluons

Medium-induced parton splitting kernels from Soft Collinear Effective Theory with Glauber gluons

ProbeR-parity violating supersymmetry effects inB→K(*)ℓ+ℓ−

Shape and soft functions of HQET and SCET in the 't Hooft model

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