Relativistic Corrections to e+e− → J/ψ + ηc in a Potential Model

Bodwin, Geoffrey T.; Kang, Daekyoung; Kim, Tae−Won; Lee, Jung-Il; Yu, Chaehyun

doi:10.1063/1.2714404

Cited by 64 publications

(82 citation statements)

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“…Their result, σ(e + e − → J/ψ + η c ) = 20.04 fb, is in agreement with the result of Ref. [783]. However, the values of the NRQCD matrix elements that are given in Ref.…”

Section: Theory Vs Experimentssupporting

confidence: 89%

“…[784] differ significantly from those that were used in Ref. [783]. This difference probably arises mainly because of the very large relativistic corrections to Γ(J/ψ → light hadrons), which may not be under good control.…”

Section: Theory Vs Experimentsmentioning

confidence: 80%

“…[789], the authors of Ref. [783] computed the relativistic corrections to σ(e + e − → J/ψ + η c ). Taking into account the corrections of NLO in α s from Ref.…”

Section: Theory Vs Experimentsmentioning

confidence: 99%

See 2 more Smart Citations

Heavy quarkonium: progress, puzzles, and opportunities

Brambilla¹,

Eidelman²,

Heltsley³

et al. 2011

Advances in the Physics of Particles and Nuclei

103

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A golden age for heavy quarkonium physics dawned a decade ago, initiated by the confluence of exciting advances in quantum chromodynamics (QCD) and an explosion of related experimental activity. The early years of this period were chronicled in the Quarkonium Working Group (QWG) CERN Yellow Report (YR) in 2004, which presented a comprehensive review of the status of the field at that time and provided specific recommendations for further progress. However, the broad spectrum of subsequent breakthroughs, surprises, and continuing puzzles could only be partially anticipated. Since the release of the YR, the BESII program concluded only to give birth to BESIII; the B-factories and CLEO-c flourished; quarkonium production and polarization measurements at HERA and the Tevatron matured; and heavy-ion collisions at RHIC have opened a window on the deconfinement regime. All these experiments leave legacies of quality, precision, and unsolved mysteries for quarkonium physics, and therefore beg for continuing investigations at BESIII, the LHC, RHIC, FAIR, the Super Flavor and/or Tau-Charm factories, JLab, the ILC, and beyond. The list of newly-found conventional states expanded to include hc(1P ), χc2(2P ), B + c , and η b (1S). In addition, the unexpected and still-fascinating X(3872) has been joined by * Editors † Section coordinators ‡ Corresponding author: bkh2@cornell.edu more than a dozen other charmonium-and bottomonium-like "XY Z" states that appear to lie outside the quark model. Many of these still need experimental confirmation. The plethora of new states unleashed a flood of theoretical investigations into new forms of matter such as quark-gluon hybrids, mesonic molecules, and tetraquarks. Measurements of the spectroscopy, decays, production, and in-medium behavior of cc, bb, and bc bound states have been shown to validate some theoretical approaches to QCD and highlight lack of quantitative success for others. Lattice QCD has grown from a tool with computational possibilities to an industrialstrength effort now dependent more on insight and innovation than pure computational power. New effective field theories for the description of quarkonium in different regimes have been developed and brought to a high degree of sophistication, thus enabling precise and solid theoretical predictions. Many expected decays and transitions have either been measured with precision or for the first time, but the confusing patterns of decays, both above and below open-flavor thresholds, endure and have deepened. The intriguing details of quarkonium suppression in heavy-ion collisions that have emerged from RHIC have elevated the importance of separating hotand cold-nuclear-matter effects in quark-gluon plasma studies. This review systematically addresses all these matters and concludes by prioritizing directions for ongoing and future efforts.

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“…Their result, σ(e + e − → J/ψ + η c ) = 20.04 fb, is in agreement with the result of Ref. [783]. However, the values of the NRQCD matrix elements that are given in Ref.…”

Section: Theory Vs Experimentssupporting

confidence: 89%

Section: Theory Vs Experimentsmentioning

confidence: 80%

See 1 more Smart Citation

Heavy quarkonium: progress, puzzles, and opportunities

Brambilla¹,

Eidelman²,

Heltsley³

et al. 2011

Advances in the Physics of Particles and Nuclei

103

View full text Add to dashboard Cite

show abstract

“…The resultant values for the matrix elements are significantly greater than those known previously [1,2]. In addition, the method has provided a reasonable solution [8] to the long-standing puzzle of the cross section for e + e − → J/ψ + η c measured at the B-factories [9], which has been one of the greatest discrepancies between theory and experiment within the Standard Model.…”

Section: Introductionmentioning

confidence: 99%

Cornell Potential Parameters for S-Wave Heavy Quarkonia

Chung¹,

Lee²,

Kang³

2008

J. Korean Phy. Soc.

Self Cite

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We compute derived quantities for various values of the model parameter of the Cornell potential model for the S-wave heavy quarkonia with radial quantum numbers n = 1, 2, and 3. Our results can be used to determine leading and relative-order-v 2 nonrelativistic quantum chromodynamics matrix elements for S-wave charmonia and bottomonia such as ψ(2S), η c (2S), and Υ(nS) for n = 1, 2, and 3. These matrix elements will be essential ingredients for resumming relativistic corrections to processes involving those S-wave heavy quarkonium states.

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“…In the e + e − annihilation experiment [7,8], problems on NRQCD involving the inclusive and exclusive J/ψ production [9-14] had been solved by introducing higher-order corrections, including radiative corrections [15][16][17][18][19][20][21][22][23][24][25][26], relativistic corrections [27][28][29][30][31][32][33][34][35], and O(α s v 2 ) corrections [36,37]. And the LO NRQCD calculations also encounter dilemmas in the heavy quarkonium production and polarization at hadron colliders especially in the large p t region.…”

Section: Introductionmentioning

confidence: 99%

α s v 2 corrections to η c and χ cJ production recoiled with a photon at e + e − colliders

Liu

et al. 2014

J. High Energ. Phys.

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Relativistic Corrections to e+e− → J/ψ + ηc in a Potential Model

Cited by 64 publications

References 0 publications

Heavy quarkonium: progress, puzzles, and opportunities

Heavy quarkonium: progress, puzzles, and opportunities

Cornell Potential Parameters for S-Wave Heavy Quarkonia

α s v 2 corrections to η c and χ cJ production recoiled with a photon at e + e − colliders

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