A study of mixing and indirect CP violation in D-0 mesons through the determination of the parameters y(CP) and A(Gamma) is presented. The parameter y(CP) is the deviation from unity of the ratio of effective lifetimes measured in D-0 decays to the CP eigenstate K+K- with respect to decays to the Cabibbo favoured mode K-pi(+). The result measured using data collected by LHCb in 2010, corresponding to an integrated luminosity of 29 pb(-1), is y(CP) = (5.5 +/- 6.3(stat) +/- 4.1(syst)) x 10(-3). The parameter A(Gamma) is the asymmetry of effective lifetimes measured in decays of D-0 and (D) over bar (0) mesons to K+K-. The result is A = (-5.9 +/- 5.9(stat) +/- 2.1(syst)) x 10(-3). A data-driven technique is used to correct for lifetime-biasing effects. RI Coca, Cornelia/B-6015-2012; Galli, Domenico/A-1606-2012; Petrolini, Alessandro/H-3782-2011; Sarti, Alessio/I-2833-2012; Carbone, Angelo/C-8289-2012; manca, giulia/I-9264-2012; de Paula, Leandro/I-9278-2012; Patrignani, Claudia/C-5223-2009; Marconi, Umberto/J-2263-2012; de Simone, Patrizia/J-3549-2012; Cardini, Alessandro/J-5736-2012; Teodorescu, Eliza/K-3044-2012

Measurement of mixing and CP violation parameters in two-body charm decays

Dettori F;Lai A;MANCA, GIULIA;OLDEMAN, RUDOLF GERHARD CHRISTIAAN;SAITTA, BIAGIO;
2012-01-01

Abstract

A study of mixing and indirect CP violation in D-0 mesons through the determination of the parameters y(CP) and A(Gamma) is presented. The parameter y(CP) is the deviation from unity of the ratio of effective lifetimes measured in D-0 decays to the CP eigenstate K+K- with respect to decays to the Cabibbo favoured mode K-pi(+). The result measured using data collected by LHCb in 2010, corresponding to an integrated luminosity of 29 pb(-1), is y(CP) = (5.5 +/- 6.3(stat) +/- 4.1(syst)) x 10(-3). The parameter A(Gamma) is the asymmetry of effective lifetimes measured in decays of D-0 and (D) over bar (0) mesons to K+K-. The result is A = (-5.9 +/- 5.9(stat) +/- 2.1(syst)) x 10(-3). A data-driven technique is used to correct for lifetime-biasing effects. RI Coca, Cornelia/B-6015-2012; Galli, Domenico/A-1606-2012; Petrolini, Alessandro/H-3782-2011; Sarti, Alessio/I-2833-2012; Carbone, Angelo/C-8289-2012; manca, giulia/I-9264-2012; de Paula, Leandro/I-9278-2012; Patrignani, Claudia/C-5223-2009; Marconi, Umberto/J-2263-2012; de Simone, Patrizia/J-3549-2012; Cardini, Alessandro/J-5736-2012; Teodorescu, Eliza/K-3044-2012
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11584/68801
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 36
  • ???jsp.display-item.citation.isi??? 37
social impact