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CharmAsymmetries

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The charm of asymmetries or the asymmetries in charm entangled edition

The study of difference between matter and antimatter (CP violation) is one of the most exciting fields at the frontier of fundamental physics research. It is driven by the question of what happened to the antimatter after the Big... ver más

22/09/2021

UNIVERSITY OF MANC...

213K€

Presupuesto del proyecto: 213K€

Líder del proyecto

THE UNIVERSITY OF MANCHESTER No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Fecha límite participación Sin fecha límite de participación.

Financiación concedida El organismo H2020 notifico la concesión del proyecto el día 2021-09-22

MSCA-IF-2018: Individual Fellowships

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UNIVERSITY OF MANCHESTER

212.93K€ | Lider

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Duración del proyecto: 29 meses Fecha Inicio: 2019-04-12
Fecha Fin: 2021-09-22

Líder del proyecto

THE UNIVERSITY OF MANCHESTER No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Presupuesto del proyecto 213K€

Fecha límite de participación Sin fecha límite de participación.

Descripción del proyecto The study of difference between matter and antimatter (CP violation) is one of the most exciting fields at the frontier of fundamental physics research. It is driven by the question of what happened to the antimatter after the Big Bang. The mesons, particles that contain both matter and antimatter quarks are ideal laboratories for the discovery of CP violation. This proposal aims at looking for CP violation in decays of mesons containing one charm (or anti-)quark, the only type of mesons where CP violation has not yet been observed. One of the objectives is to carry out a measurement of the matter-antimatter mixing and CP violation parameters in the most sensitive charm decay mode (D0->Kspipi) using the unprecedented charm data sample collected by the LHCb experiment at CERN. To achieve maximal precision of both measurements, external input from the unique Chinese flavour factory, BESIII, is crucial. Key attributes of the decays of the D meson, the strong phases and their variation across the phase space, require the use of quantum-entangled states that are accessible at BESIII. Usually, these quantities are measured in regions of the phase space, the definition of which is inspired by a model. Wrong definition of these regions would lead to dilution of the sensitivity of these measurements. We propose to measure these quantities at every point of the phase space to maximise the precision. The second objective is to look for CP violation in the charm D0->(anti-)K*0KS decays with LHCb data ignoring time-dependent effects arising from matter-antimatter mixing. The three-body final state after an instant decay of the exited K*0 meson, K pi KS, will be studied using novel model-dependent and model independent methods, the former has been pioneered by the Manchester LHCb group, and the latter has not yet been tested. Currently, these decays have been highlighted by theorists as the most likely discovery channel for time-integrated CP violation in the charm system.

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