We measure the branching fraction for the flavor-changing neutral-current process B-->X(s)l(+)l(-) with a sample of 89x10(6) Y(4S)-->B (B) over bar events recorded with the BABAR detector at the PEP-II e(+)e(-) storage ring. The final state is reconstructed from e(+)e(-) or mu(+)mu(-) pairs and a hadronic system X-s consisting of one K+/- or K-S(0) and up to two pions, with at most one pi(0). We observe a signal of 40+/-10(stat)+/-2(syst) events and extract the inclusive branching fraction B(B-->X(s)l(+)l(-))=(5.6+/-1.5(stat)+/-0.6(exp syst)+/-1.1(model syst))x10(-6) for m(l)(+)l(-)>0.2 GeV/c(2).

Measurement of the B -> X(s)l(+)l(-) branching fraction with a sum over exclusive modes / Aubert, B., Barate, R., Boutigny, D., Couderc, F., Gaillard, J.m., Hicheur, A., Karyotakis, Y., Lees, J.p., Tisserand, V., Zghiche, A., Palano, A., Pompili, A., Chen, J.c., Qi, N.d., Rong, G., Wang, P., Zhu, Y.s., Eigen, G., Ofte, I., Stugu, B., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 93:(2004), pp. 081802-1-081802-7. [10.1103/PhysRevLett.93.081802]

Measurement of the B -> X(s)l(+)l(-) branching fraction with a sum over exclusive modes

DEL RE, Daniele;RAHATLOU, SHAHRAM;SARTI, ALESSIO;BELLINI, Fabio;CAVOTO, Gianluca;FACCINI, Riccardo;FERRONI, Fernando;GASPERO, Mario;VOENA C;
2004

Abstract

We measure the branching fraction for the flavor-changing neutral-current process B-->X(s)l(+)l(-) with a sample of 89x10(6) Y(4S)-->B (B) over bar events recorded with the BABAR detector at the PEP-II e(+)e(-) storage ring. The final state is reconstructed from e(+)e(-) or mu(+)mu(-) pairs and a hadronic system X-s consisting of one K+/- or K-S(0) and up to two pions, with at most one pi(0). We observe a signal of 40+/-10(stat)+/-2(syst) events and extract the inclusive branching fraction B(B-->X(s)l(+)l(-))=(5.6+/-1.5(stat)+/-0.6(exp syst)+/-1.1(model syst))x10(-6) for m(l)(+)l(-)>0.2 GeV/c(2).
2004
01 Pubblicazione su rivista::01a Articolo in rivista
Measurement of the B -> X(s)l(+)l(-) branching fraction with a sum over exclusive modes / Aubert, B., Barate, R., Boutigny, D., Couderc, F., Gaillard, J.m., Hicheur, A., Karyotakis, Y., Lees, J.p., Tisserand, V., Zghiche, A., Palano, A., Pompili, A., Chen, J.c., Qi, N.d., Rong, G., Wang, P., Zhu, Y.s., Eigen, G., Ofte, I., Stugu, B., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 93:(2004), pp. 081802-1-081802-7. [10.1103/PhysRevLett.93.081802]
File allegati a 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/11573/231778
 Attenzione

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

Citazioni
  • ???jsp.display-item.citation.pmc??? 2
  • Scopus 131
  • ???jsp.display-item.citation.isi??? 234
social impact