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|Title:||Observation of an Excited B-c(+/-) Meson State with the ATLAS Detector||Authors:||Aad, G.
Khalek, S. Abdel
|Keywords:||B-C Meson||Issue Date:||2014||Publisher:||Amer Physical Soc||Abstract:||A search for excited states of the B-c(+/-) meson is performed using 4.9 fb(-1) of 7 TeV and 19.2 fb(-1) of 8 TeV pp collision data collected by the ATLAS experiment at the LHC. A new state is observed through its hadronic transition to the ground state, with the latter detected in the decayB(c)(+/-) -> J/psi pi(+/-). The state appears in the m(B-c(+/-)pi(+)pi(-)) - m(B-c(+/-)) - 2m(pi(+/-)) mass difference distribution with a significance of 5.2 standard deviations. The mass of the observed state is 6842 +/- 4 +/- 5 MeV, where the first error is statistical and the second is systematic. The mass and decay of this state are consistent with expectations for the second S-wave state of the B-c(+/-) meson, B-c(+/-)(2S).||URI:||https://doi.org/10.1103/PhysRevLett.113.212004
|Appears in Collections:||PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collection|
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection
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