Exotics: pp→Y(3940)→J/ψ ω

Convener

Klaus Peters, GSI

Analyst

Marc Pelizaeus, Bochum

Decay Modes

pp → Y(3940) → J/ψω

• 50%: J/ψ → e⁺e^-

• 50%: J/ψ → μ⁺μ^-

• 100%: ω → π⁺π^-π⁰

CMS energy: 3940 MeV

Background Channels

Main background should appear from &psi primes decaying to J/ψ π⁺π^-, thus the background channel should be ppbar → ψ prime π⁰. Another source could be ppbar → J/ψ ρ π in various charge states. Same number of events as in the signal channel.

Documents

• PBY3940_vrvsJune01.pdf: PB VRVS Meeting, June 1 (outdated: ω→πγ)

• MP14-070702_dubnaAnalysis.pdf: Dubna Collaboration Meeting, July 4 (outdated: ω→πγ)

• mp_gsiSepAna.pdf: GSI Collaboration Meeting, September 19

• pad0001.pdf: Panda Note: Charmonium and Charmonium Hybrids (preliminary)