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SUMMARY:Quarkonium (-like) states at BELLE
DTSTART;VALUE=DATE-TIME:20140703T133000Z
DTEND;VALUE=DATE-TIME:20140703T134500Z
DTSTAMP;VALUE=DATE-TIME:20260419T054430Z
UID:indico-contribution-1220@indico.ific.uv.es
DESCRIPTION:Speakers: Pavel Krokovny (Budker Institute of Nuclear Physics 
 and Novosibirsk State University)\nStudies of quarkonium and quarkonium-li
 ke states have led to several surprises in understanding the strong intera
 ction phenomena.  Most notably\, exotic resonances that cannot be accommod
 ated with the conventional quarkonium pictures including $X(3872)$\, $Z_c(
 4430)^\\pm$\, $Z_b(10610)^\\pm$ and $Z_b(10650)^\\pm$ have been discovered
  by Belle.  In this presentation\, we report recent results from Belle on 
 quarkonium and quarkonium-like states at Belle\, in B-meson decays\, $\\Up
 silon(nS)$ decays and in ISR processes.\n For charmonium(-like) states in 
 B decays\, we present new decay modes of X(3872) and X(3823)\, a new charg
 ed state $Z_c(4210^+ \\to J/\\psi \\pi^+$\, and searches for neutral and c
 harged isospin partners of $D_{s0}(2317)^+$.  In the ISR processes\, we pr
 esent a search for $Z_{cs}$\, a partner state of $Z_c(3900)$\, in $e^+ e^-
  \\to K^+ K^- J/\\psi$\, improved measurements of $Y(4360)$ and $Y(4660)$ 
 parameters\, and search for new resonances in $e^+ e^- \\to \\gamma \\chi_
 {cJ}$.\n For bottomonium(-like) states\, we present final results of the 6
 -dimensional amplitude analysis of the $\\Upsilon(5S) \\to \\Upsilon(1S\,2
 S\,3S) \\pi^+ \\pi^-$ decays which determines the spin-parities of $Z_b(10
 610)$ and $Z_b(10650)$\; energy scan of $\\sigma[e^+ e^- \\to {\\rm hadron
 s}]$ and $\\sigma[e^+ e^- \\to \\Upsilon(1S\,2S\,3S) \\pi^+ \\pi^-]$ in th
 e region of the $\\Upsilon(5S)$ and $\\Upsilon(6S)$ resonances\; observati
 on of $\\Upsilon(4S) \\to h_b(1P) \\eta$ transitions using the $h_b(1P) \\
 to \\eta_b(1S) \\gamma$ decays\; and the first observation of several new 
 hadronic and radiative transitions\, that shed light on the nature of high
 ly excited states.  We also present double charmonium production in exclus
 ive bottomonium decays with an evidence for $\\Upsilon(1S) \\to J/\\psi ch
 i_{c1}$.\n\nhttps://indico.ific.uv.es/event/2025/contributions/1220/
LOCATION: Sala 8+9
URL:https://indico.ific.uv.es/event/2025/contributions/1220/
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