E835 at FNAL: Charmonium Spectroscopy in $\bar p p$ Annihilations

Claudia Patrignani

doi:10.1063/1.1799766

paper

E835 at FNAL: Charmonium Spectroscopy in $p ˉ p$ Annihilations

arXiv:hep-ex/0410085 · doi:10.1063/1.1799766

Abstract

I present preliminary results on the search for $h_{c}$ in its $η_{c} γ$ and $J / ψ π^{0}$ decay modes. We observe an excess of η_cγ $e v e n t s n e a r 3526 M e V t ha t ha s a p r o babi l i t y$ {\cal P} \sim 0.001 $t o a r i se f r o mba c k g r o u n df l u c t a t i o n s . T h er eso nan ce p a r am e t er s a r e$ M=3525.8 \pm 0.2 \pm 0.2 $M e V,$ Γ\leq $1 M e V, an d$ 10.6\pm 3.7\pm3.4(br) < Γ_{\bar{p}p}B_{η_cγ} < 12.8\pm 4.8\pm4.5(br) $e V . W e f in d n oe v e n t e x cess w i t hin t h ese a r c h r e g i o nin t h e$ J/ψπ^0$ mode.

Presented at the 6th International Conference on Hyperons, Charm and Beauty Hadrons (BEACH 2004), Chicago(Il), June 27-July 3,2004

References in corpus (1)

The Saga of $h_{c}$ and $h_{b}$ Search in Heavy Quarkonia

E835 at FNAL: Charmonium Spectroscopy in pˉ​p Annihilations

Abstract

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E835 at FNAL: Charmonium Spectroscopy in $p ˉ p$ Annihilations