Martin Duy Tat: Model-Independent Measurement of the CKM Angle y in B±¿[h+h-¿+¿-]Dh'±(h=K,¿) Decays at LHCb and..., Gebunden
Model-Independent Measurement of the CKM Angle y in B±¿[h+h-¿+¿-]Dh'±(h=K,¿) Decays at LHCb and BESIIII
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- Verlag:
- Springer-Verlag GmbH, 11/2025
- Einband:
- Gebunden
- Sprache:
- Englisch
- ISBN-13:
- 9783032044808
- Artikelnummer:
- 12380012
- Umfang:
- 230 Seiten
- Sonstiges:
- XX, 230 p. 100 illus. in color.
- Erscheinungstermin:
- 3.11.2025
- Serie:
- Springer Theses
- Hinweis
-
Achtung: Artikel ist nicht in deutscher Sprache!
Klappentext
This book presents a striking demonstration of the synergies that exist between particle-physics experiments. A measurement is reported of the weak-phase γ, which is a fundamental parameter of the Standard Model and can be regarded as quantifying the amount of CP violation that is allowed by the theory. The parameter is measured through a determination of b-meson decays collected by the LHCb experiment at CERN. The b-mesons are reconstructed in a decay to a charm meson and a pion or a kaon, and the charm meson is itself reconstructed in one of two four-body final states (KKππ or ππππ). This is the first time these decay modes have been used in a γ measurement, which is itself a notable achievement of the thesis study. In order to interpret the measured observables in a theoretically clean manner, it is necessary to have knowledge of the dynamics of the charm-hadron decays. This knowledge is obtained from a study of charm-meson pair production in e+e- collisions at the psi(3770) resonance, using data collected by the BESIII experiment in Beijing. The quantum-correlations present in these decays give unique access to the required information, which is then imported back into the LHCb measurement. The precision obtained on γ is competitive with the most sensitive individual measurements so far performed of this parameter in other decay modes.