Evidence for a vector charmoniumlike state in $e^+e^- \to D^+_sD^*_{s2}(2573)^-+c.c.$ - INSPIRE

DataBETA

Evidence for a vector charmoniumlike state in $e^+e^- \to D^+_sD^*_{s2}(2573)^-+c.c.$

Belle

Collaboration

•

S. Jia
(
- Beihang U. and
- Fudan U., Shanghai
)

Apr 6, 2020

8 pages

Published in:

Phys.Rev.D 101 (2020) 9, 091101

Published: May 13, 2020

e-Print:

2004.02404 [hep-ex]

DOI:

10.1103/PhysRevD.101.091101 (publication)

PDG:

{{\mathit \psi}{(4660)}}

\rightarrow

{{\mathit e}^{+}}{{\mathit e}^{-}}

Experiments:

KEK-BF-BELLE

View in:

ADS Abstract Service

reference search24 citations

Citations per year

Abstract: (APS)

We report the measurement of e+e-→Ds+Ds2*(2573)-+c.c. via initial-state radiation using a data sample of an integrated luminosity of 921.9 fb-1 collected with the Belle detector at the ϒ(4S) and nearby. We find evidence for an enhancement with a 3.4σ significance in the invariant mass of Ds+Ds2*(2573)-+c.c. The measured mass and width are (4619.8-8.0+8.9(stat.)±2.3(syst.)) MeV/c2 and (47.0-14.8+31.3(stat.)±4.6(syst.)) MeV, respectively. The mass, width, and quantum numbers of this enhancement are consistent with the charmoniumlike state at 4626 MeV/c2 recently reported by Belle in e+e-→Ds+Ds1(2536)-+c.c. The product of the e+e-→Ds+Ds2*(2573)-+c.c. cross section and the branching fraction of Ds2*(2573)-→D¯0K- is measured from Ds+Ds2*(2573)- threshold to 5.6 GeV.

Note:

9 pages, 4 figures

electron positron: annihilation
electron positron: colliding beams
D/s+: electroproduction
D/sJ*(2573)
D/s1(2536)
mass: measured
mass: width
intermediate state
radiation: initial-state interaction
enhancement

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Figures(5)

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