The first observation of the decay (B) over bar (0)(S) -> (DK)-K-0*(0) using pp data collected by the LHCb detector at a centre-of-mass energy of 7 TeV, corresponding to an integrated luminosity of 36 pb(-1), is reported. A signal of 34.4 +/- 6.8 events is obtained and the absence of signal is rejected with a statistical significance of more than nine standard deviations. The (B) over bar (0)(S) -> (DK)-K-0*(0) branching fraction is measured relative to that of (B) over bar (0) -> D-0 rho(0): B((B) over bar (0)(S)->(DK)-K-0*(0))/B((B) over bar (0)-> D-0 rho(0)) = 1.48+/-0.34+/-0.15+/-0.12, where the first uncertainty is statistical, the second systematic and the third is due to the uncertainty on the ratio of the B-0 and B-s(0) hadronisation fractions.

Aaij, R., Beteta, C., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., et al. (2011). First observation of the decay (B)over-bar(S)(0) -> (DK)-K-0*(0) and a measurement of the ratio of branching fractions B((B)over-bar(S)(0)->(DK)-K-0*(0))/B((B)over-bar(0)-> D-0 rho(0)). PHYSICS LETTERS. SECTION B, 706(1), 32-39 [10.1016/j.physletb.2011.10.073].

First observation of the decay (B)over-bar(S)(0) -> (DK)-K-0*(0) and a measurement of the ratio of branching fractions B((B)over-bar(S)(0)->(DK)-K-0*(0))/B((B)over-bar(0)-> D-0 rho(0))

Archilli, F;CARBONI, GIOVANNI;MESSI, ROBERTO;SANTOVETTI, EMANUELE;
2011-01-01

Abstract

The first observation of the decay (B) over bar (0)(S) -> (DK)-K-0*(0) using pp data collected by the LHCb detector at a centre-of-mass energy of 7 TeV, corresponding to an integrated luminosity of 36 pb(-1), is reported. A signal of 34.4 +/- 6.8 events is obtained and the absence of signal is rejected with a statistical significance of more than nine standard deviations. The (B) over bar (0)(S) -> (DK)-K-0*(0) branching fraction is measured relative to that of (B) over bar (0) -> D-0 rho(0): B((B) over bar (0)(S)->(DK)-K-0*(0))/B((B) over bar (0)-> D-0 rho(0)) = 1.48+/-0.34+/-0.15+/-0.12, where the first uncertainty is statistical, the second systematic and the third is due to the uncertainty on the ratio of the B-0 and B-s(0) hadronisation fractions.
2011
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/04 - FISICA NUCLEARE E SUBNUCLEARE
English
Con Impact Factor ISI
Aaij, R., Beteta, C., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., et al. (2011). First observation of the decay (B)over-bar(S)(0) -> (DK)-K-0*(0) and a measurement of the ratio of branching fractions B((B)over-bar(S)(0)->(DK)-K-0*(0))/B((B)over-bar(0)-> D-0 rho(0)). PHYSICS LETTERS. SECTION B, 706(1), 32-39 [10.1016/j.physletb.2011.10.073].
Aaij, R; Beteta, C; Adeva, B; Adinolfi, M; Adrover, C; Affolder, A; Ajaltouni, Z; Albrecht, J; Alessi, F; Alexander, M; Alkhazov, G; Cartelle, P; Alve...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/100523
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