A search is presented for the four-body decay B0→pp¯p¯p in a sample of 471 million B¯B pairs collected with the BABAR detector, operated at the SLAC PEP-II asymmetric-energy e+e− collider. The center-of-mass energy is 10.58 GeV. From a fit to the distribution of the energy-substituted mass mES, the branching fraction B(B0→pp¯p¯p)=(1.1±0.5±0.2)×10−7 is extracted, where the first uncertainty is statistical and the second is systematic. The significance of the signal, including the systematic uncertainty, is 2.9 standard deviations. The upper limit on the branching fraction is determined to be 2.0×10−7 at 90% confidence level.
Search for the decay mode B0 →pp p ̄ p ̄
Lanceri, L.;Vitale, L.;
2018-01-01
Abstract
A search is presented for the four-body decay B0→pp¯p¯p in a sample of 471 million B¯B pairs collected with the BABAR detector, operated at the SLAC PEP-II asymmetric-energy e+e− collider. The center-of-mass energy is 10.58 GeV. From a fit to the distribution of the energy-substituted mass mES, the branching fraction B(B0→pp¯p¯p)=(1.1±0.5±0.2)×10−7 is extracted, where the first uncertainty is statistical and the second is systematic. The significance of the signal, including the systematic uncertainty, is 2.9 standard deviations. The upper limit on the branching fraction is determined to be 2.0×10−7 at 90% confidence level.File | Dimensione | Formato | |
---|---|---|---|
PhysRevD.98.071102.pdf
accesso aperto
Tipologia:
Documento in Versione Editoriale
Licenza:
Creative commons
Dimensione
247.65 kB
Formato
Adobe PDF
|
247.65 kB | Adobe PDF | Visualizza/Apri |
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.