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Observation of ψ(3686)→pp¯ϕ

Authors: Ablikim, M.; Achasov, M. N.; Adlarson, P.; Ahmed, S.; Albrecht, M.; Alekseev, M.; Amoroso, A.; +193 Authors
Abstract

Using a data sample of 4.48×108 ψ(3686) events collected with the BESIII detector, we present a first observation of ψ(3686)→pp¯ϕ, and we measure its branching fraction to be [6.06±0.38(stat)±0.48(syst)]×10−6. In contrast to the earlier discovery of a threshold enhancement in the pp¯-mass spectrum of the channel J/ψ→γpp¯, denoted as X(pp¯), we do not find a similar enhancement in ψ(3686)→pp¯ϕ. An upper limit of 1.82×10−7 at the 90% confidence level on the branching fraction of ψ(3686)→X(pp¯)ϕ→pp¯ϕ is obtained.

113 references, page 1 of 12

1Institute of High Energy Physics, Beijing 100049, People's Republic of China

2Beihang University, Beijing 100191, People's Republic of China

3Beijing Institute of Petrochemical Technology, Beijing 102617, People's Republic of China

4Bochum Ruhr-University, D-44780 Bochum, Germany

5Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA

6Central China Normal University, Wuhan 430079, People's Republic of China

7China Center of Advanced Science and Technology, Beijing 100190, People's Republic of China

8COMSATS University Islamabad, Lahore Campus, Defence Road, Off Raiwind Road,

54000 Lahore, Pakistan

9Fudan University, Shanghai 200443, People's Republic of China

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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