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Article
Open AccessA guide to the QCD light-cone sum rules for b-quark decays
We overview the current status and future perspectives of the QCD-based method of light-cone sum rules. The two main versions of these sum rules, using light-meson and B-meson distribution amplitudes are introduc...
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Article
Open AccessToward a complete description of b → uℓ− \( \overline{\nu} \) within the Weak Effective Theory decays
We fit the available data on exclusive semileptonic b → uℓ− ν ¯ ...
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Article
Open AccessRevisiting lifetimes of doubly charmed baryons
We present updated predictions for lifetimes of doubly charmed baryons, within the heavy quark expansion, including available NLO αs contributions and newly-computed terms in the 1/mc series. Our improved results...
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Article
Open AccessQuark-hadron duality at work: lifetimes of bottom baryons
In the 1990s, very low experimental values for the lifetime ratio τ(Λb)/τ(Bd) triggered a considerable amount of doubt in the applicability of the heavy quark expansion (HQE), which is based on the assumption of ...
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Article
Open AccessLifetimes of singly charmed hadrons
We provide an extensive study of the lifetimes of singly charmed baryons and mesons, within the heavy quark expansion with all known corrections included. A special attention is devoted to the choice of the ch...
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Article
Open AccessThe \( \overline{B} \) → π form factors from QCD and their impact on |Vub|
We revisit light-cone sum rules with pion distribution amplitudes to determine the full set of local B
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Article
Open AccessThe D∗Dπ and B∗Bπ couplings from light-cone sum rules
We revisit the calculation of the strong couplings D∗Dπ and B∗Bπ from the QCD light-cone sum rules using the pion light-cone distribution amplitudes. The accuracy of the correlation function, calculated from the ...
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Article
Open Access|Vub| determination and testing of lepton flavour universality in semileptonic Bc → D(∗) decays
In light of prospects for measurements of Bc → D(∗)lv decays in the upcoming Upgrade II of the LHC, we show that by using calculated Bc → D(∗) form factors a competitive extraction of the |Vub| CKM matrix element...
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Article
Open AccessA new angle on an old problem: helicity approach to neutron beta decay in the Standard Model
We elaborate on the dichotomy between the description of the semileptonic decays of heavy hadrons on the one hand and the semileptonic decays of light hadrons such as neutron \(\beta \)β decays on the other hand....
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Article
Open AccessOn lepton flavour universality in semileptonic Bc → ηc, J/ψ decays
We discuss Bc → ηc and Bc → J/ψ semileptonic decays within the Standard Model (SM) and beyond. The relevant transition form factors, being the main source of theoretical uncertainties, are calculated in the sum r...
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Article
Open AccessRevisiting the decoupling effects in the running of the Cosmological Constant
We revisit the decoupling effects associated with heavy particles in the renormalization group running of the vacuum energy in a mass-dependent renormalization scheme. We find the running of the vacuum energy ...
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Article
Open AccessExploring the top-Higgs FCNC couplings at polarized linear colliders with top spin observables
We study the nature of flavor changing neutral couplings of the top quark with the Higgs boson and the up/charm quark in the ...
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Article
Open AccessPionic dark matter
We study a phenomenological model where the lightest dark matter (DM) particles are the pseudo-Goldstone excitations associated with a spontaneously broken symmetry, and transforming linearly with respect to a...
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Article
Discerning new physics in \( t\overline t \) production using top spin observables at hadron colliders
Copious production of top-anti top quark pairs at hadron colliders has enabled various probes into the properties and interactions of top quarks. Among the various presently measured observables, the forward-b...
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Article
Estimate of the charming penguin contributions to B → π π
We consider the problem of factorization in B decays and illustrate the calculation of nonfactorizable contributions employing the QCD light-cone sum rule method. We present a more detailed calculation of the “ch...
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Chapter
Exclusive Nonleptonic B Decays from QCD Light-Cone Sum Rules
We are going to review recent advances in the theory of exclusive nonleptonic B decays. The emphasis is going to be on the factorization hypothesis and the role of nonfactorizable contributions for nonleptonic...
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Chapter and Conference Paper
BLM Scale for the Pion Transition Form Factor
We review the determination of the NLO Brodsky-Lepage-Mackenzie (BLM) renormalization scale for the pion transition form factor. We argue that the prediction for the pion transition form factor is independent ...
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Article
Inclusive charmed-baryon decays and lifetimes
We have quantitatively reanalyzed the inclusive charmed-baryon decays. New ingredients are the Voloshin preasymptotic effects in semileptonic decays and the Cabibbo-subleading contributions to both semilepton...
