Results 101 to 110 of about 3,322 (216)

Determination of CKM phases γ and −2βs from charmless two-body decays of beauty mesons [PDF]

, 2019
An important task of the modern research in particle physicsis is to measure the properties of the Cabibbo-Kobayashi-Maskawa (CKM)matrix. The CKM matrix governs the mixing between mass and flavour eigenstates of quarks and is responsible of the breaking ...
Fasolo, Davide
core  

Measurements of CKM matrix elements

, 2020
Precise theoretical predictions of the hadronic parameters related to exclusive semileptonic $b$-hadron decays allow for accurate determinations of the CKM matrix elements $|V_\mathrm{cb}|$ and $|V_\mathrm{ub}|$. The large production of $B^0_s$ mesons at
Ferrari, Fabio, Fabio Ferrari
core   +1 more source

Quark-hadron duality violations and higher-order 1/m b corrections in inclusive semileptonic B decays

Journal of High Energy Physics
The theoretical description and data for inclusive semileptonic B decays have reached incredible precision. This motivated us to re-animate the discussion of possible Quark-Hadron Duality violations.
Thomas Mannel, Ilija S. Milutin, Rens Verkade, K. Keri Vos   +3 more
doaj   +1 more source

New physics searches via angular distributions of B ¯ → D ∗ → Dπ τ → ℓ ν τ ν ¯ ℓ ν ¯ τ $$ \overline{B}\to {D}^{\ast}\left(\to D\pi \right)\tau \left(\to \ell {\nu}_{\tau }{\overline{\nu}}_{\ell}\right){\overline{\nu}}_{\tau } $$ decays

Journal of High Energy Physics
The study of B ¯ → D ∗ τ ν ¯ τ $$ \overline{B}\to {D}^{\ast}\tau {\overline{\nu}}_{\tau } $$ angular distribution can be used to obtain information about new physics (or beyond the Standard Model) couplings, which are motivated by various B anomalies ...
Bhubanjyoti Bhattacharya, Thomas E. Browder, Alakabha Datta, Tejhas Kapoor, Emi Kou, Lopamudra Mukherjee   +5 more
doaj   +1 more source

Inclusive semileptonic b → c ℓ ν ¯ $$ b\to c\ell \overline{\nu} $$ decays to order 1 / m b 5 $$ 1/{m}_b^5 $$

Journal of High Energy Physics
Inclusive semileptonic B → X c ℓ ν ¯ $$ B\to {X}_c\ell \overline{\nu} $$ decays can be described in the Heavy Quark Expansion (HQE) and allow for a precision determination of the CKM element |V cb |.
Thomas Mannel, Ilija S. Milutin, K. Keri Vos   +2 more
doaj   +1 more source

Standard Model updates and new physics analysis with the Unitarity Triangle fit

, 2013
"We present the summer 2012 update of the Unitarity Triangle (UT). analysis performed by the UTfit Collaboration within the Standard Model. (SM) and beyond. The increased accuracy on several of the fundamental.
Maurizio, Pierini, Guido, Martinelli, Vagnoni V., Silvestrini L, Stocchi A, Ciuchini M, Luca, Silvestrini, Sordini V, Achille, Stocchi, Parodi F, Enrico, Franco, Pierini M, Denis, Derkach, Bevan A, Schiavi C, Bona M, Marcella, Bona, Adrian, Bevan, Vincenzo, Vagnoni, Carlo, Schiavi, Franco E, Martinelli G, Viola, Sordini, Derkach D, LUBICZ, Vittorio, TARANTINO, CECILIA, Marco, Ciuchini, Fabrizio, Parodi   +27 more
core   +1 more source

Complete O α s 2 $$ \mathcal{O}\left({\alpha}_s^2\right) $$ corrections to the leptonic invariant mass spectrum in b → X c l ν ¯ l $$ b\to {X}_cl{\overline{\nu}}_l $$ decay

Journal of High Energy Physics
In the determination of the Cabibbo-Kobayashi-Maskawa matrix element |V cb | from inclusive semileptonic B-meson decays, moments of the leptonic invariant mass spectrum constitute valuable observables.
Mateusz Czaja, Mikołaj Misiak, Abdur Rehman   +2 more
doaj   +1 more source

Inclusive semileptonic B s 0 $$ {B}_s^0 $$ meson decays at the LHC via a sum-of-exclusive modes technique: possibilities and prospects

Journal of High Energy Physics
We propose an approach for measuring the moments of the hadronic invariant mass distribution in semileptonic B s 0 $$ {B}_s^0 $$ meson decays using a sum-of-exclusive technique. Using the present and foreseen knowledge about exclusive semileptonic B s 0 $
M. De Cian, N. Feliks, M. Rotondo, K. Keri Vos   +3 more
doaj   +1 more source

Precision measurement of the CKM parameter sin(𝟮𝝱) with the LHCb experiment

, 2015
Die vorliegende Dissertation beschreibt eine zerfallszeitabhängige Messung von CP-Verletzung im Zerfall von B0- und Anti-B0-Mesonen in ihren gemeinsamen Endzustand J/ψ KS. Die Größe der Symmetrieverletzung in der Interferenz der Zerfalls- und Mischungs-Amplituden der B-Mesonen lässt sich durch die CP-Observablen S(J/ψ KS) und C(J/ψ KS) ausdrücken und ...
openaire   +2 more sources

Precision measurements of the CKM angle gamma

, 2016
The level of CP-violation permitted within the Standard Model cannot account for the matter dominated universe in which we live. Within the Standard Model the CKM matrix, which describes the quark couplings, is expected to be unitary.
Malde, Sneha Sirirshkumar
core