Year: 2025
Type: article
Abstract: Methods have been proposed recently to weight data in order to allow visualisation of $$C\!P$$ C P -violation effects in transitions of neutral B mesons to multibody final states that are not $$C\!P$$ C P -eigenstates. These are useful since integration of the unweighted data over the phase space would otherwise wash out the effects of interest. A similar method, elaborated upon here, with a different weighting function can also be used to visualise $$C\!P$$ C P -conserving $${{{B}} _{({{s}})}^0} \text {--}{{\hspace{0.0pt}\overline{\hspace{0.0pt}{B}}} _{({{s}})}^0} $$ B ( s ) 0 -- B ¯ ( s ) 0 oscillations, rather than the $$C\!P$$ C P -violating asymmetries. Together with the other weighting functions, this new method could be useful, for example, to demonstrate the accuracy of the calibration of the flavour tagging algorithms that are crucial for analyses such as the measurement of the $$C\!P$$ C P -violating phase in $${{{B}} ^0_{{s}}} \rightarrow {{{J} \hspace{-1.66656pt}/\hspace{-1.111pt}\psi }} \phi $$ B s 0 → J / ψ ϕ decays. Their application to the formalism in common use for such decays is explicitly demonstrated.
Source: The European Physical Journal C
Institutions: University of Warwick, University of Chinese Academy of Sciences, European Organization for Nuclear Research, Centre National de la Recherche Scientifique, Aix-Marseille Université, Centre de physique des particules de Marseille, Institut National de Physique Nucléaire et de Physique des Particules, University of Glasgow, Scuola Normale Superiore, Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4415056126