Relativistic Corrections to e+e- {yields} J/{psi} + {eta}c in a Potential Model

doi:10.1063/1.2714404

Resummation of relativistic corrections to e{sup +}e{sup -}{yields}J/{psi}+{eta}{sub c}

Bodwin, Geoffrey T. ; Lee, Jungil ; Department of Physics, Korea University, Seoul 136-701 ; ... May 2008 - Physical Review. D, Particles Fields

We present a new calculation, in the nonrelativistic QCD (NRQCD) factorization formalism, of the relativistic corrections to the double-charmonium cross section {sigma}[e{sup +}e{sup -}{yields}J/{psi}+{eta}{sub c}] at the energy of the Belle and BABAR experiments. In comparison with previous work, our calculation contains several refinements. These include the use of the improved results for the nonperturbative NRQCD matrix elements, the resummation of a class of relativistic corrections, the use of the vector-meson-dominance method to calculate the fragmentation contribution to the pure QED amplitude, the inclusion of the effects of the running of {alpha}, and the inclusion of the contribution that arisesmore »« less
DOI: 10.1103/PHYSREVD.77.094018
Relativistic corrections to e{sup +}e{sup -} {r_arrow} J/{Psi} + {eta}{sub c} in a potential model.

Bodwin, G. T. ; Kang, D. ; Kim, T. ; ... January 2007

We compute relativistic corrections to the process e{sup +}e{sup -} {yields} J/{Psi} + {eta}{sub c} and find that they resolve the discrepancy between theory and experiment.
DOI: 10.1063/1.2714404
Resummation of relativistic corrections to e{sup +}e{sup -} {r-arrow} J/{psi} + {eta}{sub c}.

Bodwin, G. T. ; Lee, J. ; Yu, C.-H. ; ... May 2008 - Phys. Rev. D

No abstract prepared.
DOI: 10.1103/PhysRevD.77.094018
Measurement of the branching ratios {psi}{sup '}{yields}e{sup +}e{sup -}, {psi}{sup '}{yields}J/{psi}{pi}{sup 0}{pi}{sup 0} and {psi}{sup '}{yields}J/{psi}{eta}

Ambrogiani, M. ; Bagnasco, S. ; Baldini, W. ; ... August 2000 - Physical Review. D, Particles Fields

We have determined the following {psi}{sup '} branching ratios using the large event sample collected by Fermilab experiment E835 in the reaction pp(bar sign){yields}{psi}{sup '}: B({psi}{sup '}{yields}e{sup +}e{sup -})=(7.4{+-}0.2{+-}0.7)x10{sup -3}, B({psi}{sup '}{yields}J/{psi}{pi}{sup 0}{pi}{sup 0})=(18.7{+-}0.9{+-}1.3)% and B({psi}{sup '}{yields}J/{psi}{eta})=(4.1{+-}0.3{+-}0.5)%. (c) 2000 The American Physical Society.
DOI: 10.1103/PhysRevD.62.032004
Measurement of the branching ratios {psi}{sup '}{yields}e{sup +}e{sup -}, {psi}{sup '}{yields}J/{psi}{pi}{pi}, and {psi}{sup '}{yields}J/{psi}{eta}

Andreotti, M. ; Baldini, W. ; Bettoni, D. ; ... February 2005 - Physical Review. D, Particles Fields

We have measured several branching ratios for {psi}{sup '} decay using the data collected by the FNAL E835 experiment during the year 2000, obtaining B({psi}{sup '}{yields}e{sup +}e{sup -})=0.0068{+-}0.0001{+-}0.0004, B({psi}{sup '}{yields}J/{psi}{pi}{sup +}{pi}{sup -})=0.292{+-}0.005{+-}0.018, B({psi}{sup '}{yields}J/{psi}{pi}{sup 0}{pi}{sup 0})=0.167{+-}0.005{+-}0.014, and B({psi}{sup '}{yields}J/{psi}{eta})=0.028{+-}0.002{+-}0.002. We also present a measurement of the dipion mass distribution in the decays {psi}{sup '}{yields}J/{psi}{pi}{pi}.
DOI: 10.1103/PhysRevD.71.032006

Title: Relativistic Corrections to e+e- {yields} J/{psi} + {eta}c in a Potential Model

Abstract

Citation Formats

Resummation of relativistic corrections to e{sup +}e{sup -}{yields}J/{psi}+{eta}{sub c}

Relativistic corrections to e{sup +}e{sup -} {r_arrow} J/{Psi} + {eta}{sub c} in a potential model.

Resummation of relativistic corrections to e{sup +}e{sup -} {r-arrow} J/{psi} + {eta}{sub c}.

Measurement of the branching ratios {psi}{sup '}{yields}e{sup +}e{sup -}, {psi}{sup '}{yields}J/{psi}{pi}{sup 0}{pi}{sup 0} and {psi}{sup '}{yields}J/{psi}{eta}

Measurement of the branching ratios {psi}{sup '}{yields}e{sup +}e{sup -}, {psi}{sup '}{yields}J/{psi}{pi}{pi}, and {psi}{sup '}{yields}J/{psi}{eta}