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Dalitz plot analyses of J /ψ →π+π-π0, J /ψ →k+K-π0, and J /ψ → Ks0 K±π∓ produced via e+e- annihilation with initial-state radiation

  • Author(s): Lees, JP
  • Poireau, V
  • Tisserand, V
  • Grauges, E
  • Palano, A
  • Eigen, G
  • Brown, DN
  • Kolomensky, YG
  • Fritsch, M
  • Koch, H
  • Schroeder, T
  • Hearty, C
  • Mattison, TS
  • McKenna, JA
  • So, RY
  • Blinov, VE
  • Buzykaev, AR
  • Druzhinin, VP
  • Golubev, VB
  • Kravchenko, EA
  • Onuchin, AP
  • Serednyakov, SI
  • Skovpen, YI
  • Solodov, EP
  • Todyshev, KY
  • Lankford, AJ
  • Gary, JW
  • Long, O
  • Eisner, AM
  • Lockman, WS
  • Panduro Vazquez, W
  • Chao, DS
  • Cheng, CH
  • Echenard, B
  • Flood, KT
  • Hitlin, DG
  • Kim, J
  • Miyashita, TS
  • Ongmongkolkul, P
  • Porter, FC
  • Röhrken, M
  • Huard, Z
  • Meadows, BT
  • Pushpawela, BG
  • Sokoloff, MD
  • Sun, L
  • Smith, JG
  • Wagner, SR
  • Bernard, D
  • Verderi, M
  • Bettoni, D
  • Bozzi, C
  • Calabrese, R
  • Cibinetto, G
  • Fioravanti, E
  • Garzia, I
  • Luppi, E
  • Santoro, V
  • Calcaterra, A
  • De Sangro, R
  • Finocchiaro, G
  • Martellotti, S
  • Patteri, P
  • Peruzzi, IM
  • Piccolo, M
  • Rotondo, M
  • Zallo, A
  • Passaggio, S
  • Patrignani, C
  • Lacker, HM
  • Bhuyan, B
  • Szczepaniak, AP
  • Mallik, U
  • Chen, C
  • Cochran, J
  • Prell, S
  • Ahmed, H
  • Pennington, MR
  • Gritsan, AV
  • et al.
Abstract

© 2017 American Physical Society. We study the processes e+e-→γISRJ/ψ, where J/ψ→π+π-π0, J/ψ→K+K-π0, and J/ψ→KS0K±π∓ using a data sample of 519 fb-1 recorded with the BABAR detector operating at the SLAC PEP-II asymmetric-energy e+e- collider at center-of-mass energies at and near the ϒ(nS) (n=2,3,4) resonances. We measure the ratio of branching fractions R1=B(J/ψ→K+K-π0)B(J/ψ→π+π-π0) and R2=B(J/ψ→KS0K±π∓)B(J/ψ→π+π-π0). We perform Dalitz plot analyses of the three J/ψ decay modes and measure fractions for resonances contributing to the decays. We also analyze the J/ψ→π+π-π0 decay using the Veneziano model. We observe structures compatible with the presence of ρ(1450) in all three J/ψ decay modes and measure the relative branching fraction: R(ρ(1450))=B(ρ(1450)→K+K-)B(ρ(1450)→π+π-)=0.307±0.084(stat)±0.082(sys).

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