# Search for exclusive decays of the $\Lambda_{b}$ baryon and measurement of its mass

Abstract : A search for fully reconstructed \lb beauty baryons is performed using about 3 million Z decays collected with the DELPHI detector at LEP. The analysis relies on the combined use of the accurate tracking and of the hadron identification capabilities of DELPHI. A total of four events has been found, three in the \lc\ppm channel and one in the \lc\a1m channel over a small background. The \lb beauty baryon mass is measured to be (~ 5668 \pm 16~ ({\rm stat.}) \pm 8~({\rm syst.})~)~ \mv.
Document type :
Journal articles

Cited literature [7 references]

http://hal.in2p3.fr/in2p3-00014365
Contributor : Sylvie Flores <>
Submitted on : Tuesday, February 16, 1999 - 10:07:43 AM
Last modification on : Wednesday, May 15, 2019 - 4:08:23 AM
Long-term archiving on : Tuesday, June 2, 2015 - 12:56:28 PM

### Identifiers

• HAL Id : in2p3-00014365, version 1

### Citation

P. Abreu, W. Adam, T. Adye, E. Agasi, I. Ajinenko, et al.. Search for exclusive decays of the $\Lambda_{b}$ baryon and measurement of its mass. Physics Letters B, Elsevier, 1996, 374, pp.351-361. ⟨in2p3-00014365⟩

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