Observation of a Narrow Mass State Decaying Into Υ(1S) + γ in pp- Collisions at √s = 1.96 TeV

Authors

David HedinFollow

Document Type

Article

Abstract

Using data corresponding to an integrated luminosity of 1:3 fb-1, we observe a narrow mass state decaying into Υ (1S) + γ, where the Υ(1S) meson is detected by its decay into a pair of oppositely charged muons, and the photon is identified through its conversion into an electron-positron pair. The significance of this observation is 5.6 standard deviations. The mass of the state is centered at 10:551 ± 0:014(stat) ± 0:017(syst) GeV/c2, which is consistent with that of the state recently observed by the ATLAS Collaboration.

DOI

10.1103/PhysRevD.86.031103

Publication Date

1-1-2012

Comments

D0 Collaboration

Recommended Citation

Observation of a narrow mass state decaying into Υ(1 S )+ γ in p ̄ p collisions at √ s = 1.96 TeV. V. M. Abazov et al. [D0 Collaboration]. Phys. Rev. D 86 , 031103 (2012).

Original Citation

Observation of a narrow mass state decaying into Υ(1 S )+ γ in p ̄ p collisions at √ s = 1.96 TeV. V. M. Abazov et al. [D0 Collaboration]. Phys. Rev. D 86 , 031103 (2012).

Legacy Department

Department of Physics

Sponsorship

We thank the staffs at Fermilab and collaborating institutions, and acknowledge support from the DOE and NSF (USA); CEA and CNRS/IN2P3 (France); MON, Rosatom and RFBR (Russia); CNPq, FAPERJ, FAPESP and FUNDUNESP (Brazil); DAE and DST (India); Colciencias (Colombia); CONACyT (Mexico); NRF (Korea); FOM (The Netherlands); STFC and the Royal Society (United Kingdom); MSMT and GACR (Czech Republic); BMBF and DFG (Germany); SFI (Ireland); The Swedish Research Council (Sweden); and CAS and CNSF (China).

ISSN

1550-7998

Language

eng

Publisher

American Physical Society