We present results for the branching fractions and charge asymmetries in B+/--->h(+/-)pi(0) (where h(+/-)=pi(+/-),K+/-) and a search for the decay B-0-->pi(0)pi(0) using a sample of approximately 88x10(6) B (B) over bar pairs collected by the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. We measure B(B+/--->pi(+/-)pi(0))=(5.5(-0.9)(+1.0)+/-0.6)x10(-6), where the first error is statistical and the second is systematic. The B+/--->pi(+/-)pi(0) signal has a significance of 7.7sigma including systematic uncertainties. We simultaneously measure the K(+/-)pi(0) branching fraction to be B(B+/--->K(+/-)pi(0))=(12.8(-1.1)(+1.2)+/-1.0)x10(-6). The charge asymmetries are A(pi +/- pi 0)=-0.03(-0.17)(+0.18)+/-0.02 and A(K +/- pi 0)=-0.09+/-0.09+/-0.01. We place a 90% confidence-level upper limit on the branching fraction B(B-0-->pi(0)pi(0)) of 3.6x10(-6) .

Observation of the decay B-+/- -> pi(+/-)pi(0), study of B-+/- -> K-+/-pi(0), and search for B-0 -> pi(0)pi(0) / Aubert, B., Barate, R., Boutigny, D., Gaillard, J.m., Hicheur, A., Karyotakis, Y., Lees, J.p., Robbe, 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. - 91:(2003). [10.1103/physrevlett.91.021801]

Observation of the decay B-+/- -> pi(+/-)pi(0), study of B-+/- -> K-+/-pi(0), and search for B-0 -> pi(0)pi(0)

RAHATLOU, SHAHRAM;SARTI, ALESSIO;BELLINI, Fabio;CAVOTO, Gianluca;DEL RE, Daniele;FACCINI, Riccardo;FERRONI, Fernando;GASPERO, Mario;VOENA C;
2003

Abstract

We present results for the branching fractions and charge asymmetries in B+/--->h(+/-)pi(0) (where h(+/-)=pi(+/-),K+/-) and a search for the decay B-0-->pi(0)pi(0) using a sample of approximately 88x10(6) B (B) over bar pairs collected by the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. We measure B(B+/--->pi(+/-)pi(0))=(5.5(-0.9)(+1.0)+/-0.6)x10(-6), where the first error is statistical and the second is systematic. The B+/--->pi(+/-)pi(0) signal has a significance of 7.7sigma including systematic uncertainties. We simultaneously measure the K(+/-)pi(0) branching fraction to be B(B+/--->K(+/-)pi(0))=(12.8(-1.1)(+1.2)+/-1.0)x10(-6). The charge asymmetries are A(pi +/- pi 0)=-0.03(-0.17)(+0.18)+/-0.02 and A(K +/- pi 0)=-0.09+/-0.09+/-0.01. We place a 90% confidence-level upper limit on the branching fraction B(B-0-->pi(0)pi(0)) of 3.6x10(-6) .
2003
01 Pubblicazione su rivista::01a Articolo in rivista
Observation of the decay B-+/- -> pi(+/-)pi(0), study of B-+/- -> K-+/-pi(0), and search for B-0 -> pi(0)pi(0) / Aubert, B., Barate, R., Boutigny, D., Gaillard, J.m., Hicheur, A., Karyotakis, Y., Lees, J.p., Robbe, 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. - 91:(2003). [10.1103/physrevlett.91.021801]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/248194
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