Results 111 to 120 of about 4,662,419 (218)

Global analysis of charm mixing parameters and determination of the CKM angle $γ$

We present an updated global analysis of beauty decays sensitive to the angle $γ$ of the Cabibbo-Kobayashi-Maskawa matrix and of $D$-meson mixing data in the framework of approximate universality, in which CP violation in $D-\overline{D}$ mixing is described in terms of two universal weak phases corresponding to dispersive and absorptive contributions.
Betti, F., Bona, M., Ciuchini, M., Derkach, D., Di Palma, R., Kagan, A. L., Lubicz, V., Martinelli, G., Pierini, M., Silvestrini, L., Tarantino, C., Vagnoni, V.   +11 more
openaire   +3 more sources

Mapping quark-level kinematics to hadrons in a new hybrid model of semileptonic B meson decays

Journal of High Energy Physics
The need to map parton-level processes to color-neutral hadrons in a way that respects quark-hadron duality arises in several areas of physics, including in the semileptonic decays of B mesons.
Philipp Horak, Robert Kowalewski, Tommy Martinov   +2 more
doaj   +1 more source

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  

Why CKM and PMNS Angles Are Not Free Parameters

Why CKM and PMNS Angles Are Not Free Parameters A Geometric Rigidity Principle within the Temporal Theory of the Universe (TTU) In the Standard Model, the CKM and PMNS mixing matrices are introduced as independent empirical inputs, a "free‑angle paradigm" that lacks a dynamical explanation.
openaire   +1 more source

Determining the CKM Parameter Vcd from nuN Charm Production

, 1997
The formalism for extracting the CKM parameter $V_{cd}$ from $νN$ production of charm is discussed in some detail. The various model assumptions needed are clearly pointed out. A direct determination from neutrino induced dimuon production requires $νN$ charm production data, $% νN$ charm hadronization data, and the semi-muonic branching ratios for ...
openaire   +2 more sources

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

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

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

Status of global CKM fits

, 2019
Status of global CKM ...
Bona, Marcella (6338963), Bona, Marcella
core   +1 more source

Recent Belle II results on the CKM parameters |V_cb| and |V_ub|

Proceedings of The European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2023)
Published by SISSA ...
openaire   +3 more sources