Implications of the scalar meson structure fromB P decays within PQCD approachYuelong ShenIHEP, CASIn collaboration with C. D. Lu , W. Wang..9/17/2026高能物理学会第七届年会@桂林
Implications of the scalar meson structure from B SP decays within PQCD approach Yuelong Shen IHEP, CAS In collaboration with C. D. Lu , W. Wang. 9/17/2026 高能物理学会第七届年会@桂林 1
Outline>Motivation>Scalar meson production in B decays>Numerical results and discussions>Conclusion and outlookReferences: W. Wang, YLS, Y. Li and C. D. Lu, hepph/0609082;YLS, W. Wang, J. Zhu and C. D. Lu, hep-ph/061038029/17/2026高能物理学会第七届年会@桂林
Outline ➢Motivation ➢Scalar meson production in B decays ➢Numerical results and discussions ➢Conclusion and outlook References: W. Wang, YLS, Y. Li and C. D. Lu, hepph/0609082; YLS, W. Wang, J. Zhu and C. D. Lu, hep-ph/0610380. 9/17/2026 高能物理学会第七届年会@桂林 2
Motivation>Problems in scalar meson spectroscopy>The advantages in study scalar meson in Bdecays>Annihilation diagrams: Why we use PQCDapproach39/17/2026高能物理学会第七届年会@桂林
Motivation ➢Problems in scalar meson spectroscopy ➢The advantages in study scalar meson in B decays ➢Annihilation diagrams: Why we use PQCD approach 9/17/2026 高能物理学会第七届年会@桂林 3
Problems in scalar meson spectroscopy-Classification of the qqiltiplets and exotic states>OnenonetbelowandoneabovelGeVscenario Iscenario IIstatesfo(980),ao(980),0, kqq ground stateqqqqfo(1500),ao(1450),fo(1370),K*(1430)gg first exited stateqq ground stateThe low mass nonet is more likely formed by the states qqqq>onenonetabove orcloseto1GeVare physical state-The existence of glueballsLattice results: the mass of the scalar glueballlies in (1500-1800)MeV49/17/2026高能物理学会第七届年会@桂林
Problems in scalar meson spectroscopy ▪Classification of the multiplets and exotic states ➢One nonet below and one above 1 GeV The low mass nonet is more likely formed by the states ➢one nonet above or close to 1 GeV are not physical state ▪The existence of glueballs Lattice results: the mass of the scalar glueball lies in (1500-1800)MeV 9/17/2026 高能物理学会第七届年会@桂林 4
Advantages in study scalar meson in B decaysoThe larger phase space, S wavedominantNew source of glueballsBR(b → sg) ～ 5 × 10-359/17/2026高能物理学会第七届年会@桂材
Advantages in study scalar meson in B decays ⚫The larger phase space, S wave dominant ⚫New source of glueballs 9/17/2026 高能物理学会第七届年会@桂林 5