We reconstruct 𝐵± →𝐷⁢𝐾± decays in a data sample collected by the CDF II detector at the Tevatron collider corresponding to 1  fb−1 of integrated luminosity. We select decay modes where the 𝐷 meson decays to either 𝐾−⁢𝜋+ (flavor eigenstate) or 𝐾−⁢𝐾+ , 𝜋−⁢𝜋+ (𝐶⁢𝑃 -even eigenstates), and measure the direct 𝐶⁢𝑃 asymmetry 𝐴𝐶⁢𝑃+ =0.39 ±0.17⁢(stat) ±0.04⁢(syst) , and the double ratio of 𝐶⁢𝑃 -even to flavor eigenstate branching fractions 𝑅𝐶⁢𝑃+ =1.30 ±0.24⁢(stat) ±0.12⁢(syst) . These measurements will improve the determination of the Cabibbo-Kobayashi-Maskawa angle 𝛾 . They are performed here for the first time using data from hadron collisions.

Measurements of branching fraction ratios and CP asymmetries in B-+/- -> DCPK +/- decays in hadron collisions / Aaltonen T, Adelman J, Gonzalez BA, Amerio S, Amidei D, Anastassov A, Annovi A, Antos J, Apollinari G, Apresyan A, Arisawa T, Artikov A, Asaadi J, Ashmanskas W, Attal A, Aurisano A, Azfar F, Badgett W, Barbaro-Galtieri A, Barnes VE, et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - ELETTRONICO. - 81:(2010), pp. 0-0. [10.1103/PhysRevD.81.031105]

Measurements of branching fraction ratios and CP asymmetries in B-+/- -> DCPK +/- decays in hadron collisions

Latino G;
2010

Abstract

We reconstruct 𝐵± →𝐷⁢𝐾± decays in a data sample collected by the CDF II detector at the Tevatron collider corresponding to 1  fb−1 of integrated luminosity. We select decay modes where the 𝐷 meson decays to either 𝐾−⁢𝜋+ (flavor eigenstate) or 𝐾−⁢𝐾+ , 𝜋−⁢𝜋+ (𝐶⁢𝑃 -even eigenstates), and measure the direct 𝐶⁢𝑃 asymmetry 𝐴𝐶⁢𝑃+ =0.39 ±0.17⁢(stat) ±0.04⁢(syst) , and the double ratio of 𝐶⁢𝑃 -even to flavor eigenstate branching fractions 𝑅𝐶⁢𝑃+ =1.30 ±0.24⁢(stat) ±0.12⁢(syst) . These measurements will improve the determination of the Cabibbo-Kobayashi-Maskawa angle 𝛾 . They are performed here for the first time using data from hadron collisions.
2010
81
0
0
Aaltonen T; Adelman J; Gonzalez BA; Amerio S; Amidei D; Anastassov A; Annovi A; Antos J; Apollinari G; Apresyan A; Arisawa T; Artikov A; Asaadi J; Ash...espandi
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/1196812
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