Jun 5 – 9, 2023
Genova, Italy
Europe/Rome timezone

K-matrix Analysis of e+e− Annihilation in the Bottomonium Region

Jun 7, 2023, 5:20 PM
DAD - Room 4H (Genova, Italy)

DAD - Room 4H

Genova, Italy

Contributed Heavy meson spectroscopy Heavy meson spectroscopy


Eric Swanson (University of Pittsburgh)


We perform the first global and unitary analysis of e+e− → b ̄b cross sections. We analyze exclusive cross sections in the BB ̄, B∗B ̄(+c.c.), B∗B ̄∗, Bs∗B ̄s∗, Υ(nS)π+π− and hb(nP)π+π− channels as well as the total inclusive cross section for b ̄b production. Pole positions and residues are determined for four vector states, which we associate with the Υ(4S), Υ(10750), Υ(5S) (or Υ(10860)), and Υ(6S) (or Υ(11020)). We find strong evidence for the new Υ(10750) recently claimed by Belle.

Primary author

Eric Swanson (University of Pittsburgh)

Presentation materials