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Precision measurements of the e+e- → K0SK±π∓ Born cross sections at center-of-mass energies between 3.8 and 4.6 GeV
- Ablikim, M. (author)
-
- Ikegami Andersson, Walter (author)
- Uppsala universitet,Kärnfysik
-
- Johansson, Tord (author)
- Uppsala universitet,Kärnfysik
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- Zou, J. H. (author)
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- (creator_code:org_t)
- 2019
- 2019
- English.
- In: Physical Review D. - 2470-0010 .- 2470-0029. ; 99:7
- Journal article (peer-reviewed)
Abstract
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- Using data samples collected by the BESIII detector operating at the BEPCII storage ring, we measure the e+e- → K0SK±π∓ Born cross sections at center-of-mass energies between 3.8 and 4.6 GeV, corresponding to a luminosity of about 5.0 fb-1. The results are compatible with the BABAR measurements, but with the precision significantly improved. A simple 1/sn dependence for the continuum process can describe the measured cross sections, but a better fit is obtained by an additional resonance near 4.2 GeV, which could be an excited charmonium or a charmoniumlike state.
Subject headings
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
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- art (subject category)
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