https://doi.org/10.1103/PhysRevD.100.111101

">
 

Document Type

Article

Abstract

A search for the rare flavor-changing neutral current process B− → Λp̅ νv̅ using data from the BABAR experiment has been performed. A total of 424 fb−1 of e+e collision data collected at the center-of-mass energy of the ϒ(4S) resonance is used in this study, corresponding to a sample of (471 ± 3) × 106 BB̅ pairs. Signal B− → Λp̅ νv̅ candidates are identified by first fully reconstructing a B+ decay in one of many possible exclusive decays to hadronic final states, then examining detector activity that is not associated with this reconstructed B+ decay for evidence of a signal B− → Λp̅ νv̅ decay. The data yield is found to be consistent with the expected background contribution under a null signal hypothesis, resulting in an upper limit of B(B− → Λp̅ νX̅) < 3.0 × 10−5 at the 90% confidence level.

Digital Object Identifier (DOI)

https://doi.org/10.1103/PhysRevD.100.111101

APA Citation

Lees, J. P., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., Brown, D. N., Kolomensky, Yu. G., Fritsch, M., Koch, H., Schroeder, T., Cheaib, R., Hearty, C., Mattison, T. S., McKenna, J. A., So, R. Y., Blinov, V. E., Buzykaev, A. R., Druzhinin, V. P., … Wu, S. L. (2019). Search for . Physical Review D, 100(11). https://doi.org/10.1103/physrevd.100.111101

Included in

Physics Commons

Share

COinS