Abstract
The observation of a new baryon via its strong decay into (plus charge conjugates) is reported. The measurement uses a data sample of collisions at collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of . The known baryon is reconstructed via the decay chain , with . A peak is observed in the distribution of the difference between the mass of the system and the sum of the masses of the and , with a significance exceeding 5 standard deviations. The mass difference of the peak is . The new state most likely corresponds to the companion of the .
- Received 26 April 2012
DOI:https://doi.org/10.1103/PhysRevLett.108.252002
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© 2012 CERN, for the CMS Collaboration
Synopsis
Strange Beauty
Published 21 June 2012
A new baryon has been discovered by the CMS collaboration at the Large Hadron Collider.
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