REVIEW 4 cited by
Observation of a new structure near 10.75 GeV in the energy dependence of the $e^+e^-\to\Upsilon(nS)\pi^+\pi^-$ ($n=1,2,3$) cross sections
Not yet reviewed by Pith; the record is open.
This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.
SPECIMEN: schema-true, not a live event
T0 review · schema-true
One-sentence machine reading of the paper's core claim.
pith:XXXXXXXX · record.json · timestamp
Signed reviews
abstract
We report a new measurement of the $e^+e^-\to\Upsilon(nS)\pi^+\pi^-$ ($n=1,2,3$) cross sections at energies from 10.52 to 11.02 GeV using data collected with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider. We observe a new structure in the energy dependence of the cross sections; if described by a Breit-Wigner function its mass and width are found to be $M=(10752.7\pm5.9\,^{+0.7}_{-1.1})\,$MeV/$c^2$ and $\Gamma=(35.5^{+17.6}_{-11.3}\,^{+3.9}_{-3.3})\,$MeV, where the first error is statistical and the second is systematic. The global significance of the new structure including systematic uncertainty is 5.2 standard deviations. We also find evidence for the $e^+e^-\to\Upsilon(1S)\pi^+\pi^-$ process at the energy 10.52 GeV, which is below the $B\bar{B}$ threshold.
Forward citations
Cited by 4 Pith papers
-
Quarkoniumlike states above open-flavor thresholds in Born-Oppenheimer EFT
A QCD-constrained Born-Oppenheimer calculation organizes most observed quarkoniumlike states above open-flavor thresholds into heavy-quark-spin-symmetry multiplets and predicts a shallow X_b.
-
Recent Results on Charmonia- and Bottomonia-like Particles at Belle
Belle's review reports a 6.7 sigma enhancement near 10.75 GeV in e+e- to Upsilon(nS) pi+ pi- plus first observations and new upper limits in charmonium and bottomonium decays.
-
Spin Structure of heavy-quark hybrids
Heavy-quark hybrid spin splittings are fitted to charmonium lattice data and extrapolated to bottomonium, and hadronic transitions are computed with hybrid intermediate states, in a review of the author's earlier work.
-
Heavy quarkonia and new hadrons with two heavy quarks
A literature review that compiles the current experimental landscape of charmonium, bottomonium, and XYZ exotic states; it contains no new measurements, derivations, or predictions.
Discussion (0). Continue with ORCID to comment.