Pith. sign in

REVIEW

Measurement of \psi(3770) parameters

Not yet reviewed by Pith; the record is open.

Re-run · record.json Download PDF Read on arXiv ↗

This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.

SPECIMEN: schema-true, not a live event

T0 review · schema-true

One-sentence machine reading of the paper's core claim.

pith:XXXXXXXX · record.json · timestamp

arxiv 1109.4205 v2 pith:3XIG4R2P submitted 2011-09-20 hep-ex

V. V. Anashin , V. M. Aulchenko , E. M. Baldin , A. K. Barladyan , A. Yu. Barnyakov , M. Yu. Barnyakov , S. E. Baru , I. Yu. Basok
show 74 more authors
O. L. Beloborodova A. E. Blinov V. E. Blinov A. V. Bobrov V. S. Bobrovnikov A. V. Bogomyagkov A. E. Bondar A. R. Buzykaev S. I. Eidelman D. N. Grigoriev Yu. M. Glukhovchenko V. V. Gulevich D. V. Gusev S. E. Karnaev G. V. Karpov S. V. Karpov T. A. Kharlamova V. A. Kiselev V. V. Kolmogorov S. A. Kononov K. Yu. Kotov E. A. Kravchenko V. N. Kudryavtsev V. F. Kulikov G. Ya. Kurkin E. A. Kuper E. B. Levichev D. A. Maksimov V. M. Malyshev A. L. Maslennikov A. S. Medvedko O. I. Meshkov S. I. Mishnev I. I. Morozov N. Yu. Muchnoi V. V. Neufeld S. A. Nikitin I. B. Nikolaev I. N. Okunev A. P. Onuchin S. B. Oreshkin I. O. Orlov A. A. Osipov S. V. Peleganchuk S. G. Pivovarov P. A. Piminov V. V. Petrov A. O. Poluektov V. G. Prisekin A. A. Ruban V. K. Sandyrev G. A. Savinov A. G. Shamov D. N. Shatilov B. A. Shwartz E. A. Simonov S. V. Sinyatkin A. N. Skrinsky V. V. Smaluk A. V. Sokolov A. M. Sukharev E. V. Starostina A. A. Talyshev V. A. Tayursky V. I. Telnov Yu. A. Tikhonov K. Yu. Todyshev G. M. Tumaikin Yu. V. Usov A. I. Vorobiov A. N. Yushkov V. N. Zhilich V. V. Zhulanov A. N. Zhuravlev
This is my paper
classification hep-ex
keywords gammanonresonantresultsaccountbeendatainterferenceparameters
verification ladder T0 review T1 audit T2 compute T3 formal
0 comments
abstract

We report the final results of a study of the \psi(3770) meson using a data sample collected with the KEDR detector at the VEPP-4M electron-positron collider. The data analysis takes into account the interference between the resonant and nonresonant $D\bar{D}$ production, where the latter is related to the nonresonant part of the energy-dependent form factor $F_D$. The vector dominance approach and several empirical parameterizations have been tried for the nonresonant $F_D^{\NR}(s)$. Our results for the mass and total width of \psi(3770) are M = 3779.2 ^{+1.8}_{-1.7} ^{+0.5}_{-0.7} ^{+0.3}_{-0.3} MeV, \Gamma =24.9 ^{+4.6}_{-4.0} ^{+0.5}_{-0.6} ^{+0.2}_{-0.9} MeV, where the first, second and third uncertainties are statistical, systematic and model, respectively. For the electron partial width two possible solutions have been found: (1) \Gamma_{ee} = 154 ^{+79}_{-58} ^{+17}_{-9} ^{+13}_{-25} eV, (2) \Gamma_{ee} = 414 ^{+72}_{-80} ^{+24}_{-26} ^{+90}_{-10} eV. Our statistics are insufficient to prefer one solution to another. The solution (2) mitigates the problem of non-$D\bar{D}$ decays but is disfavored by potential models. It is shown that taking into account the resonance--continuum interference in the near-threshold region affects resonance parameters, thus the results presented can not be directly compared with the corresponding PDG values obtained ignoring this effect.

Discussion (0). Sign in to comment.

Pith tools