Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 8 of 8 for “"Quark mixing"”.
-
Measurement of the Partial Branching Fraction for Inclusive Semileptonic B Meson Decays to Light Hadrons B->Xu l nu and an Improved Determination of the Quark-Mixing Matrix Element |V_ub|
… each of which contains at least one $u$ quark. The variables $q^2$ and $E_e$ are then combined to compute the maximum kinematically allowed invariant mass squared of the hadronic system, $s_h^{max}$. Using these kinematic quantities, the partial branching fraction, $\Delta BR(B \to X_u e …
-
Measurement of |vcb| Using the Semileptonic Decay Λb → Λcμνμ
<p>A preliminary measurement of the quark-mixing parameter |Vcb| using the exclusive decay Λ0b→ Λ+c μ−νμ is presented. A sample of Λb semileptonic decays is provided by √s = 13TeV proton-proton collisions collected by the LHCb detector in 2017. Λ0b → Λ+c μ−νμX decays are identified from muon …
-
High-Precision Half-Life Measurement of Oxygen-14
… element of the Cabibbo-Kobayashi-Maskawa (CKM) quark-mixing matrix. A high precision half-life measurement for one of these superallowed emitters,14O, has been performed in 2017 at the Isotope Separator and Accelerator (ISAC) facility at TRIUMF. The half-life of 14O was deduced using a 4π …
-
Reconstruction of B- --> D*° e- nu Decays and Determination of |Vcb|
… the product between F at zero D*°-recoil and the Quark mixing parameter |Vcb|; (ii) rho^2, a parameter of the form factor F(w). The former parameter scales the height of dGamma/dw and rho^2 varies the shape of it. The determined values of F(1)|Vcb|, rho^2 and the branching fraction BF(B- --> …
-
Beauty meson to double open charm decays with the LHCb detector
… $B_c^+$ meson can improve understanding of heavy quark dynamics, and its decay to two charm mesons could be useful in measuring the Cabibbo-Kobayashi-Maskawa quark-mixing phase $\gamma$ in future LHC data taking periods. The first evidence of the $B_c^+\rightarrow D_s^+ \overbar{D}^0$ decay is …
-
Polarized Ultracold Neutrons: their transport in diamond guides and potential to search for physics beyond the standard model
… (Vud) of the Cabibbo-Kobayashi-Maskawa (CKM) quark mixing matrix. The CKM matrix is a unitary transform between the mass and weak eigenstates of the d, s and b quarks; if the matrix is not unitary this would imply that the Standard Model is not complete. Currently the first row of the CKM …
-
Measurement and Interpretation of Moments of the Combined Hadronic Mass and Energy Spectrum in Inclusive Semileptonic B-meson Decays
… of B mesons to final states containing a charm quark, B->Xc l nu. The variable n_X^2 is a combination of the invariant mass of the charmed meson m_X, its energy in the B-meson rest-frame E_X, and a constant \tilde{\Lambda} = 0.65 GeV, n_X^2 = m_X^2 c^4 - 2 \tilde{\Lambda} E_X + …
-
MEASUREMENT OF THE MAGNETIC AND ELECTRIC DIPOLE MOMENTS OF THE $\LAMBDA$ BARYON AT LHCB
… (SM), via the Cabibbo-Kobayashi-Maskawa (CKM) quark-mixing mechanism, cannot explain the large observed asymmetry, thus new sources of CP violation, beyond the SM, are expected. A possible way to probe such sources is to search for electric dipole moments (EDMs) of fundamental particles. This …