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Title: {Upsilon}(3{ital S}){r_arrow}{Upsilon}(1{ital S}){pi}{pi} decay: Is the {pi}{pi} spectrum puzzle an indication of a {ital b{bar b}q{bar q}} resonance?

Abstract

The {pi}{pi} mass spectrum in {Upsilon}(3{ital S}){r_arrow}{Upsilon}(1{ital S}){pi}{pi} has a peculiar double peak structure. This structure and the {Upsilon}(1{ital S}){pi} spectrum are reproduced by introducing a triangle singularity associated with a {ital b{bar b}}{pi} resonance ({ital J}{sup {ital P}}=1{sup +}) in the mass range 10.4--10.8 GeV.

Authors:
; ; ;  [1]
  1. Queen Mary and Westfield College, London E1 4NS, United Kingdom Petersburg Nuclear Physics Institute, Gatchina, 188350 (Russian Federation)
Publication Date:
OSTI Identifier:
46377
Resource Type:
Journal Article
Journal Name:
Physical Review, D
Additional Journal Information:
Journal Volume: 51; Journal Issue: 9; Other Information: PBD: 1 May 1995
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; UPSILON-10355 MESONS; WEAK HADRONIC DECAY; UPSILON-9460 MESONS; PIONS; MASS SPECTRA; BOTTOMONIUM; QUARKONIUM; RESONANCE; SINGULARITY

Citation Formats

Anisovich, V.V., Bugg, D.V., Sarantsev, A.V., and Zou, B.S. {Upsilon}(3{ital S}){r_arrow}{Upsilon}(1{ital S}){pi}{pi} decay: Is the {pi}{pi} spectrum puzzle an indication of a {ital b{bar b}q{bar q}} resonance?. United States: N. p., 1995. Web. doi:10.1103/PhysRevD.51.R4619.
Anisovich, V.V., Bugg, D.V., Sarantsev, A.V., & Zou, B.S. {Upsilon}(3{ital S}){r_arrow}{Upsilon}(1{ital S}){pi}{pi} decay: Is the {pi}{pi} spectrum puzzle an indication of a {ital b{bar b}q{bar q}} resonance?. United States. doi:10.1103/PhysRevD.51.R4619.
Anisovich, V.V., Bugg, D.V., Sarantsev, A.V., and Zou, B.S. Mon . "{Upsilon}(3{ital S}){r_arrow}{Upsilon}(1{ital S}){pi}{pi} decay: Is the {pi}{pi} spectrum puzzle an indication of a {ital b{bar b}q{bar q}} resonance?". United States. doi:10.1103/PhysRevD.51.R4619.
@article{osti_46377,
title = {{Upsilon}(3{ital S}){r_arrow}{Upsilon}(1{ital S}){pi}{pi} decay: Is the {pi}{pi} spectrum puzzle an indication of a {ital b{bar b}q{bar q}} resonance?},
author = {Anisovich, V.V. and Bugg, D.V. and Sarantsev, A.V. and Zou, B.S.},
abstractNote = {The {pi}{pi} mass spectrum in {Upsilon}(3{ital S}){r_arrow}{Upsilon}(1{ital S}){pi}{pi} has a peculiar double peak structure. This structure and the {Upsilon}(1{ital S}){pi} spectrum are reproduced by introducing a triangle singularity associated with a {ital b{bar b}}{pi} resonance ({ital J}{sup {ital P}}=1{sup +}) in the mass range 10.4--10.8 GeV.},
doi = {10.1103/PhysRevD.51.R4619},
journal = {Physical Review, D},
number = 9,
volume = 51,
place = {United States},
year = {1995},
month = {5}
}