LHCb Collaboration (Including: Back, J. J., Blake, Thomas, Costa Sobral, Cayo, Crocombe, Andrew, Gershon, T. J., Kreps, Michal, Latham, Thomas, Loh, David, Mathad, Abhijit , Millard, E., O'Hanlon, Daniel P., Poluektov, Anton, Qian, W., Wallace, Charlotte and Wicht, Jean). (2017) Observation of the doubly charmed Baryon Ξ_{cc}^{++}. Physical Review Letters, 119 (11). 112001. doi:10.1103/PhysRevLett.119.112001 ISSN 0031-9007.
Research output not available from this repository.
Request-a-Copy directly from author or use local Library Get it For Me service.
Abstract
A highly significant structure is observed in the Λ_{c}^{+}K^{-}π^{+}π^{+} mass spectrum, where the Λ_{c}^{+} baryon is reconstructed in the decay mode pK^{-}π^{+}. The structure is consistent with originating from a weakly decaying particle, identified as the doubly charmed baryon Ξ_{cc}^{++}. The difference between the masses of the Ξ_{cc}^{++} and Λ_{c}^{+} states is measured to be 1334.94±0.72(stat.)±0.27(syst.) MeV/c^{2}, and the Ξ_{cc}^{++} mass is then determined to be 3621.40±0.72(stat.)±0.27(syst.)±0.14(Λ_{c}^{+}) MeV/c^{2}, where the last uncertainty is due to the limited knowledge of the Λ_{c}^{+} mass. The state is observed in a sample of proton-proton collision data collected by the LHCb experiment at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 1.7 fb^{-1}, and confirmed in an additional sample of data collected at 8 TeV.
Item Type: | Journal Article |
---|---|
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics |
SWORD Depositor: | Library Publications Router |
Journal or Publication Title: | Physical Review Letters |
Publisher: | American Physical Society |
ISSN: | 0031-9007 |
Official Date: | 15 September 2017 |
Dates: | Date Event 15 September 2017 Published 11 September 2017 Available |
Volume: | 119 |
Number: | 11 |
Article Number: | 112001 |
DOI: | 10.1103/PhysRevLett.119.112001 |
Status: | Peer Reviewed |
Publication Status: | Published |
Access rights to Published version: | Open Access (Creative Commons open licence) |
URI: | https://wrap.warwick.ac.uk/93075/ |
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |