Электронная библиотека (репозиторий) Томского государственного университета
Achasov, M. N. | Chelkov, G. A. | BEPCII, коллайдер

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Source: Physical Review Letters. 2017. Vol. 118, № 1. P. 012001-012001-8
Type: статьи в журналах
Date: 2017
Description: Based on a sample of 1.31×109  J/ψ events collected with the BESIII detector, an amplitude analysis of the isospin-violating decays η′→π+π−π0 and η′→π0π0π0 is performed. A significant P-wave contribut ... More
Source: Physics Letters B. 2017. Vol. 774. P. 252-257
Type: статьи в журналах
Date: 2017
Description: Using a data set of 2.93 fb−1 taken at a center-of-mass energy s=3.773 GeV with the BESIII detector at the BEPCII collider, we perform a search for an extra U(1) gauge boson, also denoted as a dark ph ... More
Source: Physical Review D. 2017. Vol. 95, № 9. P. 092004-1-092004-13
Type: статьи в журналах
Date: 2017
Description: Using ð223.7 1.4Þ × 106 J=ψ events accumulated with the BESIII detector, we study ηc decays to ϕϕ and ωϕ final states. The branching fraction of ηc → ϕϕ is measured to be Brðηc → ϕϕÞ ¼ ð2.5 0.3þ0.3 −0 ... More
Source: Physical Review Letters. 2017. Vol. 118, № 22. P. 221802-1-221802-8
Type: статьи в журналах
Date: 2017
Description: Using 4.479 × 108 ψð3686Þ events collected with the BESIII detector, we search for the decays ψð3686Þ → eþe−χcJ and χcJ → eþe−J=ψ, where J ¼ 0, 1, 2. The decays ψð3686Þ → eþe−χcJ and χcJ → eþe−J=ψ are ... More
Source: Physics Letters B. 2016. Vol. 753. P. 103-109
Type: статьи в журналах
Date: 2016
Description: By analyzing a data set of 2.92 fb−12.92 fb−1 of e+e−e+e− collision data taken at View the MathML sources=3.773 GeV and 106.41×106106.41×106ψ(3686)ψ(3686) decays taken at View the MathML sources=3.686 ... More
Source: Physics Letters B. 2016. Vol. 753. P. 629-638
Type: статьи в журналах
Date: 2016
Description: We extract the e+e−→π+π−e+e−→π+π− cross section in the energy range between 600 and 900 MeV, exploiting the method of initial state radiation. A data set with an integrated luminosity of 2.93 fb−12.93 ... More
Source: Physical Review Letters. 2016. Vol. 116, № 25. P. 251802-1-251802-7
Type: статьи в журналах
Date: 2016
Description: A search for radiative decays of the P-wave spin singlet charmonium resonance hc is performed based on 4.48×108 ψ′ events collected with the BESIII detector operating at the BEPCII storage ring. Event ... More
Source: Physics Letters B. 2015. Vol. 749. P. 414-420
Type: статьи в журналах
Date: 2015
Description: Using the data sets taken at center-of-mass energies above 4 GeV by the BESIII detector at the BEPCII storage ring, we search for the reaction e+e- -> gamma_ISR X(3872) -> gamma_ISR pi+pi-J/psi via th ... More
Source: Physical Review D. 2015. Vol. 92, № 9. P. 092006-1-092006-15
Type: статьи в журналах
Date: 2015
Description: We present a study of the process e+e-→π±(DD¯*)∓ using data samples of 1092  pb-1 at s=4.23  GeV and 826  pb-1 at s=4.26  GeV collected with the BESIII detector at the BEPCII storage ring. With full r ... More
Source: Chinese physics C. 2015. Vol. 39, № 4. P. 041001-1-041001-9
Type: статьи в журналах
Date: 2015
Description: Using data samples collected at center-of-mass energies of √s=4.009, 4.230, 4.260, and 4.360 GeV with the BESIII detector operating at the BEPCII collider, we perform a search for the process e+e−→γχc ... More
Source: Physical Review D. 2015. Vol. 91, № 9. P. 092009-1-092009-9
Type: статьи в журналах
Date: 2015
Description: We report a measurement of the branching fraction for ψ(3770)→γχc1 and search for the transition ψ(3770)→γχc2 based on 2.92  fb−1 of e+e− data accumulated at s√=3.773  GeV with the BESIII detector at ... More
Source: Physical Review Letters. 2015. Vol. 115, № 22. P. 221805 (1-7)-
Type: статьи в журналах
Date: 2015
Description: We report the first measurement of the absolute branching fraction for Λ+c→Λe+νe. This measurement is based on 567  pb−1 of e+e− annihilation data produced at s√=4.599  GeV, which is just above the Λ+ ... More
Source: Physical Review D. 2015. Vol. 91, № 11. P.112005-1-112005-12
Type: статьи в журналах
Date: 2015
Description: Using data samples collected with the BESIII detector operating at the BEPCII collider at 17 center-of-mass energies from 3.810 to 4.600 GeV, we perform a study of e+e−→ηJ/ψ and π0J/ψ. The Born cross ... More
Source: Physical Review D. 2015. Vol. 92, № 1. P. 012014-1-012014-11
Type: статьи в журналах
Date: 2015
Description: Based on a sample of 1.31×109 J/ψ events collected with the BESIII detector at the BEPCII collider, Dalitz plot analyses of selected 79,625 η→π+π−π0 events, 33,908 η→π0π0π0 events, and 1,888 η′→π0π0π0 ... More
Source: Physical Review D. 2015. Vol. 91, № 9. P. 092006-1-092006-11
Type: статьи в журналах
Date: 2015
Description: Using a sample of 1.06×108ψ(3686) events produced in e+e− collisions at s√=3.686  GeV and collected with the BESIII detector at the BEPCII collider, we present studies of the decays ψ(3686)→K−ΛΞ¯++c.c ... More
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