PT Journal
AU BABAR Collaboration (Lees, JPea
   Martinez-Vidal, F
   Oyanguren, A
TI Search for B- -> Lambda(p)over-bar nu(nu)over-bar with the BABAR experiment
SO Physical Review D
JI Phys. Rev. D
PY 2019
BP 111101
EP 8pp
VL 100
IS 11
DI 10.1103/PhysRevD.100.111101
LA English
AB A search for the rare flavor-changing neutral current process B- -> Lambda(p) over bar nu(nu) over bar 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 Upsilon(4S) resonance is used in this study, corresponding to a sample of (471 +/- 3) x 10(6) B (B) over bar pairs. Signal B- -> Lambda(p) over bar nu(nu) over bar candidates arc identified by fast 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- -> Lambda(p) over bar nu(nu) over bar 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- -> Lambda(p) over bar nu(nu) over bar) < 3.0 x 10(-5) at the 90% confidence level.
ER