First observations of the Cabibbo-suppressed decays anti-B0 → D+ K− π+ π− and B− → D0 K− π+ π− are reported using 35 pb^−1 of data collected with the LHCb detector. Their branching fractions are measured with respect to the corresponding Cabibbo-favored decays, from which we obtain B(anti-B0 → D+ K− π+ π−)/B(anti-B0 → D+ π− π+ π−)=(5.9 ± 1.1 ± 0.5) x 10^−2 and B(B− → D0 K− π+ π−)/B(B− → D0 π− π+ π−) = (9.4 ± 1.3 ± 0.9) x 10^−2, where the uncertainties are statistical and systematic, respectively. The B− → D0 K− π+ π− decay is particularly interesting, as it can be used in a similar way to B− → D0 K− to measure the Cabibbo-Kobayashi-Maskawa phase γ.

R. Aaij, C. Abellan Beteta, B. Adeva, M. Adinolfi, C. Adrover, A. Affolder, et al. (2012). First Observation of the Decays anti-B0 → D+ K− π+ π− and B− → D0 K− π+ π−. PHYSICAL REVIEW LETTERS, 108(16), 1-8 [10.1103/PhysRevLett.108.161801].

First Observation of the Decays anti-B0 → D+ K− π+ π− and B− → D0 K− π+ π−

CARBONE, ANGELO;GALLI, DOMENICO;PATRIGNANI, CLAUDIA;PERAZZINI, STEFANO;VAGNONI, VINCENZO MARIA;
2012

Abstract

First observations of the Cabibbo-suppressed decays anti-B0 → D+ K− π+ π− and B− → D0 K− π+ π− are reported using 35 pb^−1 of data collected with the LHCb detector. Their branching fractions are measured with respect to the corresponding Cabibbo-favored decays, from which we obtain B(anti-B0 → D+ K− π+ π−)/B(anti-B0 → D+ π− π+ π−)=(5.9 ± 1.1 ± 0.5) x 10^−2 and B(B− → D0 K− π+ π−)/B(B− → D0 π− π+ π−) = (9.4 ± 1.3 ± 0.9) x 10^−2, where the uncertainties are statistical and systematic, respectively. The B− → D0 K− π+ π− decay is particularly interesting, as it can be used in a similar way to B− → D0 K− to measure the Cabibbo-Kobayashi-Maskawa phase γ.
2012
R. Aaij, C. Abellan Beteta, B. Adeva, M. Adinolfi, C. Adrover, A. Affolder, et al. (2012). First Observation of the Decays anti-B0 → D+ K− π+ π− and B− → D0 K− π+ π−. PHYSICAL REVIEW LETTERS, 108(16), 1-8 [10.1103/PhysRevLett.108.161801].
R. Aaij; C. Abellan Beteta; B. Adeva; M. Adinolfi; C. Adrover; A. Affolder; Z. Ajaltouni; J. Albrecht; F. Alessio; M. Alexander; G. Alkhazov; P. Alvar...espandi
File in questo prodotto:
Eventuali allegati, non sono esposti

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/11585/115673
 Attenzione

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

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 12
  • ???jsp.display-item.citation.isi??? 9
social impact