We report an analysis of the Λb0→Λc+π-π+π- decay in a data sample collected by the CDF II detector at the Fermilab Tevatron corresponding to 2.4  fb-1 of integrated luminosity. We reconstruct the currently largest samples of the decay modes Λb0→Λc(2595)+π- (with Λc(2595)+→Λc+π+π-), b0→Λc(2625)+π- (with Λc(2625)+→Λc+π+π-), Λb0→Σc(2455)++π-π- (with Σc(2455)++→Λc+π+), and Λb0→Σc (2455)0π+π- (with Σc(2455)0→Λc+π-) and measure the branching fractions relative to the Λb0→Λc+π- branching fraction. We measure the ratio B(Λb0→Λc +π-π+π-)/ B(Λb0→Λc+π-)=3.04±0.33(stat)-0.55+0.70(syst) which is used to derive B(Λb0→Λc+π-π+π-)=(26.8-11.2+11.9)×10-3.

T. Aaltonen, B. Álvarez González, S. Amerio, D. Amidei, A. Anastassov, A. Annovi, et al. (2012). Measurement of the branching fraction B(Λ_{b}^{0}→Λ_{c}^{+}π^{-}π^{+}π^{-}) at CDF. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 85, 032003-1-032003-11 [10.1103/PhysRevD.85.032003].

Measurement of the branching fraction B(Λ_{b}^{0}→Λ_{c}^{+}π^{-}π^{+}π^{-}) at CDF

BRIGLIADORI, LUCA;CASTRO, ANDREA;DENINNO, MARIA MADDALENA;MAZZANTI, PAOLO;MOGGI, NICCOLO';MUSSINI, MANUEL;RIMONDI, FRANCO;ZUCCHELLI, STEFANO
2012

Abstract

We report an analysis of the Λb0→Λc+π-π+π- decay in a data sample collected by the CDF II detector at the Fermilab Tevatron corresponding to 2.4  fb-1 of integrated luminosity. We reconstruct the currently largest samples of the decay modes Λb0→Λc(2595)+π- (with Λc(2595)+→Λc+π+π-), b0→Λc(2625)+π- (with Λc(2625)+→Λc+π+π-), Λb0→Σc(2455)++π-π- (with Σc(2455)++→Λc+π+), and Λb0→Σc (2455)0π+π- (with Σc(2455)0→Λc+π-) and measure the branching fractions relative to the Λb0→Λc+π- branching fraction. We measure the ratio B(Λb0→Λc +π-π+π-)/ B(Λb0→Λc+π-)=3.04±0.33(stat)-0.55+0.70(syst) which is used to derive B(Λb0→Λc+π-π+π-)=(26.8-11.2+11.9)×10-3.
2012
T. Aaltonen, B. Álvarez González, S. Amerio, D. Amidei, A. Anastassov, A. Annovi, et al. (2012). Measurement of the branching fraction B(Λ_{b}^{0}→Λ_{c}^{+}π^{-}π^{+}π^{-}) at CDF. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 85, 032003-1-032003-11 [10.1103/PhysRevD.85.032003].
T. Aaltonen;B. Álvarez González;S. Amerio;D. Amidei;A. Anastassov;A. Annovi;J. Antos;G. Apollinari;J. Appel;T. Arisawa;A. Artikov;J. Asaadi;W. Ashmans...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/154911
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