A possible hadronic excess in psi(2S) decay and the rho pi puzzle

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We study the so-called {rho}{pi} puzzle of the {psi}(2S) decay by incorporating two inputs; the relative phase between the one-photon and the gluonic decay amplitude, and a possible hadronic excess in the inclusive nonelectromagnetic decay rate of {psi}(2S). We look into the possibility that the hadronic excess in {psi}(2S) originates from a decay process of long-distance origin which is absent from the J/{upsilon} decay. We propose that the amplitude of this additional process happens to nearly cancel the short-distance gluonic amplitude in the exclusive decay {psi}(2S) {yields} 1{sup -}0{sup -} and turn the sum dominantly real in contrast to the ... continued below

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17 pages

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Suzuki, Mahiko November 9, 2000.

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Description

We study the so-called {rho}{pi} puzzle of the {psi}(2S) decay by incorporating two inputs; the relative phase between the one-photon and the gluonic decay amplitude, and a possible hadronic excess in the inclusive nonelectromagnetic decay rate of {psi}(2S). We look into the possibility that the hadronic excess in {psi}(2S) originates from a decay process of long-distance origin which is absent from the J/{upsilon} decay. We propose that the amplitude of this additional process happens to nearly cancel the short-distance gluonic amplitude in the exclusive decay {psi}(2S) {yields} 1{sup -}0{sup -} and turn the sum dominantly real in contrast to the J/{psi} decay. We present general consequences of this mechanism and survey two models which might possibly explain the source of this additional amplitude.

Physical Description

17 pages

Notes

INIS; OSTI as DE00834417

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  • Journal Name: Physical Review D; Journal Volume: 6305; Journal Issue: 5; Other Information: Submitted to Physical Review D, Volume 6305, No.5; Journal Publication Date: 03/01/2001

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  • Report No.: LBNL--46203
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 834417
  • Archival Resource Key: ark:/67531/metadc779943

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • November 9, 2000

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  • Dec. 3, 2015, 9:30 a.m.

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  • April 4, 2016, 4:25 p.m.

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Suzuki, Mahiko. A possible hadronic excess in psi(2S) decay and the rho pi puzzle, article, November 9, 2000; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc779943/: accessed October 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.