A study of indirect CP violation in D0 mesons through the determination of the parameter AGamma is presented using a data sample of pp collisions, corresponding to an integrated luminosity of 1.0fb(-1), collected with the LHCb detector and recorded at the center-of-mass energy of 7 TeV at the LHC. The parameter AGamma is the asymmetry of the effective lifetimes measured in decays of D0 and D0 mesons to the CP eigenstates K- K+ and pi- pi+. Fits to the data sample yield AGamma(KK)=(-0.35±0.62±0.12)*10(-3) and AGamma(pipi)=(0.33±1.06±0.14)*10(-3), where the first uncertainties are statistical and the second systematic. The results represent the world's best measurements of these quantities. They show no difference in AGamma between the two final states and no indication of CP violation.

Aaij, R., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., Ajaltouni, Z., et al. (2014). Measurements of indirect CP asymmetries in D0 K- K+ and D0 pi- pi+ decays. PHYSICAL REVIEW LETTERS, 112(4), 041801-041801.

Measurements of indirect CP asymmetries in D0 K- K+ and D0 pi- pi+ decays

Archilli, F;CARBONI, GIOVANNI;SANTOVETTI, EMANUELE;
2014-01-01

Abstract

A study of indirect CP violation in D0 mesons through the determination of the parameter AGamma is presented using a data sample of pp collisions, corresponding to an integrated luminosity of 1.0fb(-1), collected with the LHCb detector and recorded at the center-of-mass energy of 7 TeV at the LHC. The parameter AGamma is the asymmetry of the effective lifetimes measured in decays of D0 and D0 mesons to the CP eigenstates K- K+ and pi- pi+. Fits to the data sample yield AGamma(KK)=(-0.35±0.62±0.12)*10(-3) and AGamma(pipi)=(0.33±1.06±0.14)*10(-3), where the first uncertainties are statistical and the second systematic. The results represent the world's best measurements of these quantities. They show no difference in AGamma between the two final states and no indication of CP violation.
2014
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/04 - FISICA NUCLEARE E SUBNUCLEARE
English
Aaij, R., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., Ajaltouni, Z., et al. (2014). Measurements of indirect CP asymmetries in D0 K- K+ and D0 pi- pi+ decays. PHYSICAL REVIEW LETTERS, 112(4), 041801-041801.
Aaij, R; Adeva, B; Adinolfi, M; Adrover, C; Affolder, A; Ajaltouni, Z; Albrecht, J; Alessio, F; Alexander, M; Ali, S; Alkhazov, G; Alvarez Cartelle, P...espandi
Articolo su rivista
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/2108/99050
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? 32
social impact