We describe in detail a previously published measurement of CP violation in B0-Bbar0 oscillations, based on an integrated luminosity of 425.7 fb-1 collected by the BABAR experiment at the PEPII collider. We apply a novel technique to a sample of about 6 million Bbar0-->’D*+l-nubar decays selected with partial reconstruction of the D*+ meson. The charged lepton identifies the flavor of one B meson at its decay time, the flavor of the other B is determined by kaon tagging. We determine a CP violating asymmetry ACP=(N(B0B0)-N(Bbar0 Bbar0))/(N(B0B0)+N(Bbar0 Bbar0))=(0.06±0.17-0.32+0.38)% corresponding to Delta_CP=1-|q/p|=(0.29±0.84-1.61+1.88)x10-3. This measurement is consistent and competitive with those obtained at the B factories with dilepton events.

Search for mixing-induced CP violation using partial reconstruction of Bbar0 -->D*+Xl-nubar and kaon tagging

Calabrese, R.;Garzia, I.;Luppi, E.;
2016

Abstract

We describe in detail a previously published measurement of CP violation in B0-Bbar0 oscillations, based on an integrated luminosity of 425.7 fb-1 collected by the BABAR experiment at the PEPII collider. We apply a novel technique to a sample of about 6 million Bbar0-->’D*+l-nubar decays selected with partial reconstruction of the D*+ meson. The charged lepton identifies the flavor of one B meson at its decay time, the flavor of the other B is determined by kaon tagging. We determine a CP violating asymmetry ACP=(N(B0B0)-N(Bbar0 Bbar0))/(N(B0B0)+N(Bbar0 Bbar0))=(0.06±0.17-0.32+0.38)% corresponding to Delta_CP=1-|q/p|=(0.29±0.84-1.61+1.88)x10-3. This measurement is consistent and competitive with those obtained at the B factories with dilepton events.
2016
Lees, J. P.; Poireau, V.; Tisserand, V.; Grauges, E.; Palano, A.; Eigen, G.; Stugu, B.; Brown, D. N.; Kerth, L. T.; Kolomensky, Y. U. G.; Lee, M. J.; ...espandi
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in SFERA 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/11392/2377664
 Attenzione

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

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 3
  • ???jsp.display-item.citation.isi??? 2
social impact