Search for the Decay B^0 -> a^\pm_1 \rho^\mp

Aubert, B.

Stanford Linear Accelerator Center

关键词: Particle Decay;    Pions Plus;    Experiment-Hep,Hepex;    Mesons;    Pions Minus;   

DOI  :  10.2172/882200
RP-ID  :  SLAC-PUB-11850
RP-ID  :  AC02-76SF00515
RP-ID  :  882200

美国|英语

来源: UNT Digital Library

【 摘 要 】

The authors present a search for the rare B-meson decay B{sup 0} {yields} {alpha}{sub 1}{sup {+-}}{rho}{sup {-+}} with {alpha}{sub 1}{sup {+-}} {yields} {pi}{sup +}{pi}{sup -}{pi}{sup {+-}}. We use (110 {+-} 1.2) x 10{sup 6} {Upsilon}(4S) {yields} B{bar B} decays collected with the BABAR detector at the PEp-II asymmetric-energy B Factory at SLAC. They obtain an upper limit of 30 x 10{sup -6} (90% C.L.) for the branching fraction product {Beta}(B{sup 0} {yields} {alpha}{sub 1}{sup {+-}}{rho}{sup {-+}}) {Beta}({alpha}{sub 1}{sup {+-}} {yields} {pi}{sup +}{pi}{sup -}{pi}{sup {+-}}), where they assume that the {alpha}{sub 1}{sup {+-}} decays exclusively to {rho}{sup 0}{pi}{sup {+-}}.