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 20 of 40 for “"CKM"”.
-
Determination of the CKM ratio $|V_{ub}|/|V_{cb}|$ using semileptonic $B_c^{+}$ decays at LHCb
… to extract the first-ever measurement of the CKM ratio, $|V_{ub}|/|V_{cb}|$, using semileptonic $B_c^{+}$ decays, $\begin{align*}\frac{|V_{ub}|}{|V_{cb}|} = 0.200 \pm 0.020 \pm 0.041 \pm 0.001.\end{align*}$ In both results, the first uncertainty is statistical, the second is systematic, and …
-
Measurement of the CKM Matrix Element |Vub| with B -> rho e ny Decays at BABAR
… fraction for B -> rho e nu decays and the CKM matrix element |Vub| is measured with semileptonic exclusive B-meson decays using approximately 55 million Upsilon(4S) -> BBbar decays collected during the years 2000 and 2001 with the BABAR detector. The result is Br(B0 -> rho- e+ nu) = …
-
A study of the CKM angle gamma using the LHCb experiment and a distributed workload management system
… key channel for the precision measurement of the CKM angle gamma, is studied using the multiplatform DIRAC system. The expected annual yield from this channel for 2 fb-1 of data (a full data taking year) is ~4200 events, with a total physics background to signal ratio (B/S) of < 0:54 at the 90% …
-
Conservative kidney management program components in a resource limited setting: South Africa
… restricted Conservative Kidney Management (CKM) pathway of Kidney Supportive Care (KSC). Aim: This study aimed to determine the perceived standards or components of care in providing CKM services in low resourced countries like SA. Objectives: To describe standards or components of a CKM …
-
MEASUREMENT OF THE CKM ANGLE Gamma WITH THE Lambda_b0--> D0pK. DECAY AND COMMISSIONING OF THE UPSTREAM TRACKER AT THE LHCB EXPERIMENT.
… be used to measure through the GLW method the CKM (Cabibbo-Kobayashi-Maskawa) angle gamma, a fundamental parameter describing CP violation within the SM. The study employs new Machine Learning (ML) algorithms to optimise signal candidates, enhancing signal yield even in channels previously …
-
Measurement of the CKM angle $\gamma$ and development of a novel, combined GGSZ analysis of $B \rightarrow D^{(*)} h^{(*)}$ decays at LHCb
… of the least well-constrained parameters of the CKM sector, which embodies the description of quark interactions. This thesis details work undertaken by the author at the LHCb experiment with the aim of reducing the uncertainty in $\gamma$. It describes a measurement performed using a Dalitz …
-
MEASUREMENT OF BRANCHING FRACTIONS OF B DECAYS TO K_1(1270) PI AND K_1(1400) PI AND DETERMINATION OF THE CKM ANGLE ALPHA FROM B0 --> A_1(1260)+/- PI-/+
This dissertation reports the measurement of the branching fractions of neutral and charged B meson decays to final states containing a K_1(1270) or K_1(1400) meson and a charged pion. The data, collected with the BaBar detector at the SLAC National Accelerator Laboratory, correspond to 454 million …
-
Messung der Betaasymmetrie A im Neutronenzerfall
… Neutrons auf V_ud, das erste Matrixelement der CKM-Matrix zugegriffen werden. Mit Kenntnis von V_ud und V_us kann die CKM-Matrix auf Unitarität überprüft werden.
-
Polarized Ultracold Neutrons: their transport in diamond guides and potential to search for physics beyond the standard model
… element (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 …
-
B [right arrow] ([rho]/[omega]) [gamma] at BaBar
… fractions of the decays ... the ratio of CKM-matrix elements Vtd=Vts are extracted and the length of the far side of the unitarity triangle is determined.
-
Analysis of B Meson Decays to Three Charged Pions
… dependence on the complex quark couplings in the CKM matrix. They also test dynamical models for hadronic B decays. Based on a sample of 772 million BB pairs collected by the Belle experiment, we present a study of direct CP violation in the decay of charged B to three charged pions.
-
Analysis of Neutral D Meson Two-Body Decays to a Neutral Kaon and a Neutral Pion
… may provide evidence for CP-violation beyond the CKM mechanism. I present an analysis method to measure this branching fraction asymmetry, R(D0) ≡ B(D0→K0S π0)−B(D0→K0L π0)/(B(D0→K0Sπ0)+B(D0→K0Lπ0)), utilizing e+e− → cc events in the Belle dataset.
-
Lattice QCD calculations of Kl3 and pion form factors using partially twisted boundary conditions
… of the |V<sub>us</sub>| element of the CKM matrix. An accurate determination of these form factors is therefore important. Using partially twisted boundary conditions we calculate the K<sub>l3</sub> form factor directly at q<sup>2</sup> = 0, removing the need for the q<sup>2</sup> …
-
Conceptualising Customer Relationship Management and Its Impact on Customer Lifetime Value in the Taiwanese Banking Sector
… knowledge and customer knowledge management (CKM) capability, are significantly and positively related to customer value. CKM capability and customization are crucial in affecting customer satisfaction. The results also provided strong evidence of customer value’s impact on customer …
-
Measurement of CP Observables in B- -> D0 K- pi+ pi- Decays
… are measured, which </p> <p>are sensitive to the CKM Angle gamma.</p> <p>Upper limits are reported for the values of R_s^± since the doubly Cabibbo suppressed decay B- → D0 K- π+ π- with D0 → K+π- is not observed.</p>
-
Measurement of the single top quark cross section in the lepton plus jets final state in proton-antiproton collisions at a center of mass energy of 1.96 TeV using the CDF II detector.
… = 172.5 GeV/c^2. In addition, we extract the CKM matrix element value |Vtb| = 0.96 ± 0.09 (stat. + syst.) ± 0.05 (theory) and set a lower limit of |Vtb| > 0.78 at the 95% credibility level.
-
Measurement of the CP Asymmetry in Semimuonic B Decays Produced in Proton-Antiproton Collisions at Center of Mass Energy= 1.96 TeV
… as a constraint on the complex phase of the CKM matrix element Vts by using the B0 neutral mixing contribution measured at the B factories. We measure the CP violating asymmetry from Bs mixing to be AsSL = 0.020 +/- 0.028.
-
Effective field theories for inclusive B decays
… of the B meson. These allow one to determine CKM elements precisely and to search for physics beyond the Standard Model. We use the framework of effective field theories, in particular the Soft-Collinear Effective Theory, which is a suitable method when the decay products include a jet-like …
-
Observation of b → dγ decays and determination of |V<sub>td</sub>/V<sub>ts</sub>|
… This result is used to determine the ratio of CKM matrix elements, |V<sub>td</sub>/V<sub>ts</sub>| = 0.199 <sub>−0.025</sub><sup>+0.026</sup><sub>−0.015</sub><sup>0.018</sup>.
-
Genetic factors in statin intolerance
… missense variants in LILRB5 (Asp247Gly) and CKM (Glu83Gly) were replicated and shown to be associated with CK levels irrespective of statin usage in the GoDARTS cohort and the clinical trial setting (JUPITER). Further, the CKM variant was also associated with inducibility of CK at times of …
Page 1 of 2