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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
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Source: Chinese physics C. 2017. Vol. 41, № 11. P. 113001-1-113001-9
Type: статьи в журналах
Date: 2017
Description:
To study the nature of the state Y (2175), a dedicated data set of e+e− collision data was collected at the center-of-mass energy of 2.125 GeV with the BESIII detector at the BEPCII collider. By analy
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Source: Physics Letters B. 2017. Vol. 767. P. 42-47
Type: статьи в журналах
Date: 2017
Description:
We report the first measurement of the absolute branching fraction for View the MathML sourceΛc+→Λμ+νμ. This measurement is based on a sample of e+e−e+e− annihilation data produced at a center-of-mass
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Source: Physical Review Letters. 2017. Vol. 118, № 11. P. 112001-1-112001-7
Type: статьи в журналах
Date: 2017
Description:
We report the first direct measurement of decays of the Λ+c baryon involving the neutron. The analysis is performed using 567 pb−1 of e+e− collision data collected at √s=4.599 GeV with the BESIII de
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Source: Physical Review D. 2017. Vol. 96, № 1. P. 012002-1-012002-15
Type: статьи в журналах
Date: 2017
Description:
Using 2.93 fb−1 of data taken at 3.773 GeV with the BESIII detector operated at the BEPCII collider, we study the semileptonic decays D+→¯K0e+νe and D+→π0e+νe. We measure the absolute decay branching
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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
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Source: Physical Review Letters. 2017. Vol. 118, № 9. P. 092002-1-092002-8
Type: статьи в журналах
Date: 2017
Description:
The cross sections of e+e−→π+π−hc at center-of-mass energies from 3.896 to 4.600 GeV are measured using data samples collected with the BESIII detector operating at the Beijing Electron Positron Colli
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Source: Physical Review D. 2017. Vol. 95, № 11. P. 111102-1-111102-8
Type: статьи в журналах
Date: 2017
Description:
We study the singly Cabibbo suppressed decays Λ+c→pη and Λ+c→pπ0 using Λ+c¯Λ−c pairs produced by e+e− collisions at a center-of-mass energy of √s=4.6 GeV. The data sample was collected by the BESIII d
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Source: Physical Review D. 2017. Vol. 96, № 5. P. 051101-1-051101-8
Type: статьи в журналах
Date: 2017
Description:
We present first evidence for the process e+e−→γηc(1S) at six center-of-mass energies between 4.01 and 4.60 GeV using data collected by the BESIII experiment operating at BEPCII. We measure the Born c
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Source: Physical Review D. 2017. Vol. 96, № 9. P. 092007-1-092007-11
Type: статьи в журналах
Date: 2017
Description:
Based on 448.1×106 ψ(3686) events collected with the BESIII detector, the decays ψ(3686)→γχcJ,χcJ→γγ(J=0,1,2) are studied. The decay branching fractions of χc0,2→γγ are measured to be B(χc0→γγ)=(1.93
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Source: Physical Review Letters. 2017. Vol. 118, № 9. P. 092001-1-092001-8
Type: статьи в журналах
Date: 2017
Description:
The cross section for the process e+e−→π+π−J/ψ is measured precisely at center-of-mass energies from 3.77 to 4.60 GeV using 9 fb−1 of data collected with the BESIII detector operating at the BEPCII s
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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
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Source: Physical Review D. 2017. Vol. 95, № 7. P. 071102-1-071102-8
Type: статьи в журналах
Date: 2017
Description:
Using an electron-positron collision data sample of 2.93 fb−1 collected at a center-of-mass energy of ffiffi s p ¼ 3.773 GeV with the BESIII detector, we present the first search for the radiative lep
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Source: Physical Review D. 2017. Vol. 96, № 1. P. 012005-1-012005-8
Type: статьи в журналах
Date: 2017
Description:
Based on a sample of 1.31 billion J/ψ events collected with the BESIII detector, we report the study of the doubly radiative decay η′→γγπ0 for the first time, where the η′ meson is produced via the J/
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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
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