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CERN Document Server 2,011 registres trobats  1 - 10següentfinal  anar al registre: La cerca s'ha fet en 2.28 segons. 
1.
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New physics contributions to moments of inclusive b → c semileptonic decays / Fael, Matteo (KIT, Karlsruhe, TTP ; CERN) ; Rahimi, Muslem (Siegen U.) ; Vos, K. Keri (Maastricht U. ; Nikhef, Amsterdam)
Inclusive semileptonic $B\to X_c \ell \bar{\nu}_\ell$ decays, where $\ell = \mu,e$, are by now standard candles in the determination of the CKM element $|V_{cb}|$. These determinations rely on the heavy-quark expansion and use moments of decay spectra to extract the non-perturbative parameters directly from data under the standard model assumption. [...]
arXiv:2208.04282; P3H-22-090; SI-HEP-2022-21; TTP22-056; Nikhef 2022-010.- 2023-02-08 - 29 p. - Published in : JHEP 02 (2023) 086 Fulltext: 2208.04282 - PDF; Publication - PDF;
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Inclusive $B\rightarrow X_c \ell {\bar{\nu }}_\ell$ and $B\rightarrow X_u \ell {\bar{\nu }}_\ell$ decays: current status and future prospects / Fael, Matteo (CERN) ; Prim, Markus (Bonn U.) ; Vos, K. Keri (Maastricht U. ; NIKHEF, Amsterdam)
The inclusive semileptonic $B\rightarrow X_c \ell {\bar{\nu }}_\ell$ and $B\rightarrow X_u \ell {\bar{\nu }}_\ell$ decays allow for the extraction of the CKM elements $|V_{cb}|$ and $|V_{ub}|$, respectively. These extractions are based on the Heavy-Quark Expansion, where recent progress on both the experimental and theoretical side allow for impressively precise results. [...]
Nikhef 2023-024; CERN-TH-2023-222.- 2024 - 22 p. - Published in : Eur. Phys. J. Spec. Top. 233 (2024) 325-346 Fulltext: PDF;
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(72)
Kolya: an open-source package for inclusive semileptonic $B$ decays / Fael, Matteo (CERN) ; Milutin, Ilija S. (Siegen U.) ; Vos, K. Keri (Maastricht U. ; NIKHEF, Amsterdam)
We introduce the code kolya, an open-source tool for phenomenological analyses of inclusive semileptonic $B$ meson decays. [...]
Nikhef 2023-022 ; CERN-TH-2024-155 ; SI-HEP-2024-20 ; P3H-24-065 ; arXiv:2409.15007. - 37.
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(53)
QED effects in inclusive semi-leptonic $B$ decays / Bigi, Dante (CERN ; Turin U. ; Munich, Max Planck Inst. ; Munich, Tech. U.) ; Bordone, Marzia (CERN) ; Gambino, Paolo (Turin U. ; Munich, Max Planck Inst. ; Munich, Tech. U.) ; Haisch, Ulrich (Munich, Max Planck Inst.) ; Piccione, Andrea (Turin U.)
We analyse in detail the QED corrections to the total decay width and the moments of the electron energy spectrum of the inclusive semi-leptonic $B \to X_c e \nu$ decay. Our calculation includes short-distance electroweak corrections, the complete ${\cal O}(\alpha)$ partonic terms and leading-logarithmic QED effects up to ${\cal O}(\Lambda^3_{\rm QCD}/m_b^3)$. [...]
arXiv:2309.02849; CERN-TH-2023-145; MPP-2023-186.- 2023-11-22 - 41 p. - Published in : JHEP 2311 (2023) 163 Fulltext: document - PDF; 2309.02849 - PDF;
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Measurement of |Vcb| using the semileptonic decay $\overline{B}_{d}^{0} \to D^{*+}\ell_{-\overline{\nu}_{l}}$ / Oyanguren, A ; Roudeau, P ; Salt, J
DELPHI-2002-019-CONF-556 ; CERN-DELPHI-2002-019-CONF-556. - 2002. - 27 p.
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First determination of $|V_{cb}|$ and $B_s\rightarrow D_s^*$ hadronic form factors using $B_s$ semileptonic decays in LHCb / Vazquez Gomez, Ricardo (speaker) (University of Barcelona (ES))
Semileptonic decays of heavy hadrons are commonly used to measure the parameters of the Cabibbo-Kobayashi-Maskawa (CKM) matrix, as they involve only one hadronic current, parametrised in terms of scalar functions known as form factors. Two complementary methods have been used to determine the matrix element $|V_{cb}|$ that encodes the coupling between the $b$ and $c$ quarks. [...]
2020 - 2966. LHC Seminar External link: Event details In : First determination of $|V_{cb}|$ and $B_s\rightarrow D_s^*$ hadronic form factors using $B_s$ semileptonic decays in LHCb
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7.
(44)
NNLO QCD corrections to the q$^{2}$ spectrum of inclusive semileptonic B-meson decays / Fael, Matteo (CERN) ; Herren, Florian (Zurich U.)
We calculate the next-to-next-to-leading order QCD corrections to the leptonic invariant mass ($q^2$) spectrum of semileptonic $b \to c$ inclusive decays, taking into account the mass of the charm quark and the charged lepton in the final state. We obtain analytic results in terms of generalized polylogarithms and present numerical studies of the $\mathcal{O}(\alpha_s^2)$ corrections to the $q^2$ spectrum of $b \to c \ell \bar \nu_\ell$ decays, for $\ell =e, \mu$ and $\tau$, in the kinetic scheme. [...]
arXiv:2403.03976; CERN-TH-2024-025; ZU-TH 14/24.- 2024-05-24 - 19 p. - Published in : JHEP 2405 (2024) 287 Fulltext: document - PDF; 2403.03976 - PDF;
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Chebyshev and Backus-Gilbert reconstruction for inclusive semileptonic $B_{(s)}$-meson decays from Lattice QCD / Barone, Alessandro (U. Mainz, PRISMA ; Southampton U.) ; Hashimoto, Shoji (KEK, Tsukuba ; Sokendai, Tsukuba) ; Jüttner, Andreas (Southampton U. ; CERN) ; Kaneko, Takashi (KEK, Tsukuba ; Sokendai, Tsukuba ; KMI, Nagoya) ; Kellermann, Ryan (KEK, Tsukuba ; Sokendai, Tsukuba)
We present a study on the nonperturbative calculation of observables for inclusive semileptonic decays of $B_{(s)}$ mesons using lattice QCD. We focus on the comparison of two different methods to analyse the lattice data of Euclidean correlation functions, specifically Chebyshev and Backus-Gilbert approaches. [...]
arXiv:2312.17401; KEK-TH-2590.- 2024-05-04 - 10 p. - Published in : PoS: LATTICE2023 (2024) , pp. 236
Fulltext: document - PDF; 2312.17401 - PDF;
In : 40th International Symposium on Lattice Field Theory (Lattice 2023), Fermilab, Batavia, IL, United States, 30 Jul - 5 Aug 2023, pp.236
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(43)
Study of charged current decays at LHCb / Mathad, Abhijit (CERN) /LHCb Collaboration
Semileptonic charged current decays, particularly $b \rightarrow c \ell^- \bar{\nu}_{\ell}$ and $b \rightarrow u \ell^- \bar{\nu}_{\ell}$ processes, have played a pivotal role in testing the foundations of the Standard Model of particle physics. This report presents recent findings from the LHCb experiment, where these decays have been explored to investigate three critical fronts: lepton flavor universality, the pursuit of new physics phenomena beyond the Standard Model, and the precision constraints imposed on the Cabibbo-Kobayashi-Maskawa matrix elements $|V_{cb}|$ and $|V_{ub}|$..
2024 - 10 p. - Published in : PoS HQL2023 (2024) 10 Fulltext: PDF;
In : 16th International Conference on Heavy Quarks and leptons, Mumbai, India, 28 Nov - 2 Dec 2023, pp.10
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New DELPHI Results from Semileptonic b, c Decays / Margoni, M. (Padua U. ; INFN, Padua)
The inclusive direct and cascade semileptonic branching ratios of the b quark were measured from a fit to the lepton momentum spectrum in the B-hadron rest frame, exploiting the charge correlation between the lepton and the heavy meson. The value of the Vcb element in the CKM quark mixing matrix was computed from the differential decay width of the process B0--> D+-* l- nu, measured as a function of the product W of the B and D* 4-velocities, using an inclusive method of D* reconstruction. [...]
hep-ex/9903028.- 1999 - 7 p. - Published in : , pp. 3.11 Access to fulltext document: PDF; Fulltext: PDF; External link: hep-ex/9903028 PDF
In : Meeting of the Division of Particles and Fields (DPF) of the American Physical Society (APS), Los Angeles, CA, USA, 6 - 9 Jan 1999, pp.3.11
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