Search for narrow resonances in e+ e- annihilation between 1.85 and 3.1   GeV with the KEDR Detector

KEDR Collaboration: V. V. Anashin; V. M. Aulchenko; E. M. Baldin; A.; K. Barladyan; A. Yu. Barnyakov; M. Yu. Barnyakov; S. E. Baru; I. Yu. Basok,; 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

arXiv:1107.2824·hep-ex·May 28, 2015

Search for narrow resonances in e+ e- annihilation between 1.85 and 3.1 GeV with the KEDR Detector

KEDR Collaboration: V. V. Anashin, V. M. Aulchenko, E. M. Baldin, A., K. Barladyan, A. Yu. Barnyakov, M. Yu. Barnyakov, S. E. Baru, I. Yu. Basok,, O. L. Beloborodova, A. E. Blinov, V. E. Blinov, A. V. Bobrov, V. S., Bobrovnikov, A. V. Bogomyagkov, A. E. Bondar, A. R. Buzykaev

PDF

TL;DR

This study searched for narrow resonances in electron-positron annihilation between 1.85 and 3.1 GeV using the KEDR detector, setting upper limits on potential resonance widths.

Contribution

First search for narrow resonances in this energy range with the KEDR detector, establishing new upper limits on leptonic widths.

Findings

01

No narrow resonances observed within the energy range.

02

Upper limit on leptonic width: <120 eV at 90% confidence level.

03

Results constrain models predicting narrow resonances.

Abstract

We report results of a search for narrow resonances in e+ e- annihilation at center-of-mass energies between 1.85 and 3.1 GeV performed with the KEDR detector at the VEPP-4M e+ e- collider. The upper limit on the leptonic width of a narrow resonance Gamma(R -> ee) Br(R -> hadr) < 120 eV has been obtained (at 90 % C.L.).

Peer Reviews

No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.

Videos

No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.