We present the result of a search for the charmless two-body baryonic decay B 0 → p ¯ p in a sample of 88 million Υ ( 4 S ) → B ¯ B decays collected by the BABAR detector at the SLAC PEP-II asymmetric-energy B Factory. We use Cherenkov radiation to identify protons cleanly, and determine the signal yield with a maximum-likelihood fit technique using kinematic and topological information. We find no evidence for a signal and place a 90% confidence-level upper limit of B ( B 0 → p ¯ p ) < 2.7 × 10 − 7 .

Search for the decay B-0 -> p(p)over-bar / 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 D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - (2004). [10.1103/PhysRevD.69.091503]

Search for the decay B-0 -> p(p)over-bar

del Re, D.;Rahatlou, S.;Sarti, A.;
2004

Abstract

We present the result of a search for the charmless two-body baryonic decay B 0 → p ¯ p in a sample of 88 million Υ ( 4 S ) → B ¯ B decays collected by the BABAR detector at the SLAC PEP-II asymmetric-energy B Factory. We use Cherenkov radiation to identify protons cleanly, and determine the signal yield with a maximum-likelihood fit technique using kinematic and topological information. We find no evidence for a signal and place a 90% confidence-level upper limit of B ( B 0 → p ¯ p ) < 2.7 × 10 − 7 .
2004
B physics, Branching fraction, Flavor physics
01 Pubblicazione su rivista::01a Articolo in rivista
Search for the decay B-0 -> p(p)over-bar / 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 D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - (2004). [10.1103/PhysRevD.69.091503]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1673924
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