T. Held
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View article: Setup and COSY Proton Beam Tests of the PANDA Forward Endcap Calorimeter at FAIR
Setup and COSY Proton Beam Tests of the PANDA Forward Endcap Calorimeter at FAIR Open
PANDA is the main hadron physics addressing experiment of the future FAIR (Facility for Antiproton and Ion Research) center at Darmstadt, Germany. Located at the HESR antiproton storage ring the PANDA detector is optimized for physics of t…
View article: Development of the front-end electronics for a cost-effective PET-like detector system
Development of the front-end electronics for a cost-effective PET-like detector system Open
Most detector systems used for positron emission particle tracking (PEPT) are very expensive due to the use of inorganic plastic scintillators combined with a high number of readout electronic channels. This work aims to reduce the overall…
View article: A simulation study on spatial and time resolution for a cost-effective positron emission particle tracking system
A simulation study on spatial and time resolution for a cost-effective positron emission particle tracking system Open
This work is the second part of a simulation study investigating the processing of densely packed and moving granular assemblies by positron emission particle tracking (PEPT). Since medical PET scanners commonly used for PEPT are very expe…
View article: Technical design report for the endcap disc DIRC <sup>*</sup>
Technical design report for the endcap disc DIRC <sup>*</sup> Open
PANDA (anti-proton annihiliation at Darmstadt) is planned to be one of the four main experiments at the future international accelerator complex FAIR (Facility for Antiproton and Ion Research) in Darmstadt, Germany. It is going to address …
View article: Technical design report for the endcap disc DIRC $^{*}$
Technical design report for the endcap disc DIRC $^{*}$ Open
PANDA (anti-proton annihiliation at Darmstadt) is planned to be one of the four main experiments at the future international accelerator complex FAIR (Facility for Antiproton and Ion Research) in Darmstadt, Germany. It is going to address …
View article: Cross section measurement of $e^+e^- \to p\bar{p}\eta$ and $e^+e^- \to p\bar{p}\omega$ at center-of-mass energies between 3.773 GeV and 4.6 GeV.
Cross section measurement of $e^+e^- \to p\bar{p}\eta$ and $e^+e^- \to p\bar{p}\omega$ at center-of-mass energies between 3.773 GeV and 4.6 GeV. Open
Based on $14.7~\\textrm{fb}^{-1}$ of $e^+e^-$ annihilation data collected with\nthe BESIII detector at the BEPCII collider at 17 different center-of-mass\nenergies between $3.7730~\\textrm{GeV}$ and $4.5995~\\textrm{GeV}$, Born cross\nsect…
View article: Helicity Amplitude Analysis of $\psi(3686) \to \Omega^- \bar{\Omega}^+$
Helicity Amplitude Analysis of $\psi(3686) \to \Omega^- \bar{\Omega}^+$ Open
We present an analysis of the process $\\psi(3686) \\to \\Omega^- \\bar{\\Omega}^+$ ($\\Omega^-\\to K^-\\Lambda$, $\\bar{\\Omega}^+\\to K^+\\bar{\\Lambda}$, $\\Lambda\\to p\\pi^-$, $\\bar{\\Lambda}\\to \\bar{p}\\pi^+$) based on a data set …
View article: Search for the rare decay B0→D*0γ
Search for the rare decay B0→D*0γ Open
SLAC for its support and the kind hospitality extended to them. This work is supported by the US Department of Energy and National Science Foundation, the Natural Sciences and Engineering Research Council (Canada), Institute of High Energy…
View article: Observation of $D^+\to\eta\eta\pi^+$ and improved measurement of $D^{0(+)}\to\eta\pi^+\pi^{-(0)}$
Observation of $D^+\to\eta\eta\pi^+$ and improved measurement of $D^{0(+)}\to\eta\pi^+\pi^{-(0)}$ Open
Using an $e^+e^-$ annihilation data sample corresponding to an integrated luminosity of $2.93\,\rm fb^{-1}$ collected at the center-of-mass energy of 3.773\,GeV with the BESIII detector, we measure the absolute branching fractions of $D^+\…
View article: "Table 1" of "Measurement of the $\mathrm e^+\mathrm e^-\rightarrow\mathrm\pi^+\mathrm\pi^-$ Cross Section between 600 and 900 MeV Using Initial State Radiation"
"Table 1" of "Measurement of the $\mathrm e^+\mathrm e^-\rightarrow\mathrm\pi^+\mathrm\pi^-$ Cross Section between 600 and 900 MeV Using Initial State Radiation" Open
Results for the bare cross section $\sigma^\text{bare}_{\pi^+\pi^-}$ and the pion form factor together with their statistical uncertainties. The systematical uncertainties are given by 0.9% (see arXiv:1507.08188).
View article: Measurement of the $e^+e^-\to\pi^+\pi^-\pi^0$ Cross Section from 0.7 GeV to 3.0 GeV via Initial-State Radiation
Measurement of the $e^+e^-\to\pi^+\pi^-\pi^0$ Cross Section from 0.7 GeV to 3.0 GeV via Initial-State Radiation Open
The cross section of the process $e^+e^-\to\pi^+\pi^-\pi^0$ is measured with a precision of 1.6% to 25% in the energy range between $0.7$ and 3.0 GeV using the Initial State Radiation method. A data set with an integrated luminosity of $2.…
View article: Evidence for the decays of and *
Evidence for the decays of and * Open
We study the hadronic decays of to the final states and , using an annihilation data sample of 567 pb -1 taken at a center-of-mass energy of 4.6 GeV with the BESIII detector at the BEPCII collider. We find evidence for the decays and …
View article: Observation of ${{e^+e^- \rightarrow D_s^+} \overline{ D}^{\bf (*)0} {K^-}}$ and study of the <i>P</i> -wave ${{D_s}}$ mesons
Observation of ${{e^+e^- \rightarrow D_s^+} \overline{ D}^{\bf (*)0} {K^-}}$ and study of the <i>P</i> -wave ${{D_s}}$ mesons Open
Studies of e(+)e(-)-> D-s(+)(D) over bar (()*K-)0(-) and the p-wave charmed-strange mesons are performed based on an e(+)e(-) collision data sample corresponding to an integrated luminosity of 567 pb(-1) collected with the BESIII detector …
View article: Construction of the Forward Endcap Calorimeter of the PANDA Experiment at FAIR
Construction of the Forward Endcap Calorimeter of the PANDA Experiment at FAIR Open
PANDA is the main hadron physics addressing experiment of the future FAIR (Facility for Antiproton and Ion Research) center at Darmstadt, Germany. Located at the HESR antiproton storage ring the PANDA detector is optimized for physics of t…
View article: Observation and study of $J/\psi\rightarrow\phi\eta\eta'$ at BESIII
Observation and study of $J/\psi\rightarrow\phi\eta\eta'$ at BESIII Open
We report the observation and study of the decay $J/\psi\rightarrow\phi\eta\eta'$ using $1.3\times{10^9}$ $J/\psi$ events collected with the BESIII detector. Its branching fraction, including all possible intermediate states, is measured t…
View article: Technical design report for the $\overline{{\rm{P}}}\mathrm{ANDA}$ Barrel DIRC detector
Technical design report for the $\overline{{\rm{P}}}\mathrm{ANDA}$ Barrel DIRC detector Open
This documents describes the technical design and the expected performance of the Barrel DIRC detector for the PANDA experiment. The Barrel DIRC will provide hadronic charged particle identification in the polar angle range of $22^\circ$ t…
View article: Observation of ψ(3686)→η′e+e−
Observation of ψ(3686)→η′e+e− Open
Using a data sample of $448.1 \times 10^6$ $\psi(3686)$ events collected with the BESIII detector at the BEPCII collider, we report the first observation of the electromagnetic Dalitz decay $\psi(3686) \to \eta' e^+ e^-$, with significance…
View article: Observation of $h_1(1380)$ in $J/\psi \to \eta^{\prime} K\bar K \pi$
Observation of $h_1(1380)$ in $J/\psi \to \eta^{\prime} K\bar K \pi$ Open
Using $1.31 \times 10^9$ $J/\psi$ events collected by the BESIII detector at the BEPCII $e^+e^-$ collider, we report the first observation of the $h_1(1380)$ in $J/\psi \to \eta^{\prime} h_1(1380)$ with a significance of more than ten stan…
View article: Measurement of absolute branching fraction of the inclusive decay $Λ_{c}^{+} \to Λ+ X$
Measurement of absolute branching fraction of the inclusive decay $Λ_{c}^{+} \to Λ+ X$ Open
Based on an $e^+e^-$ collision data sample corresponding to an integrated luminosity of 567$\\,\\rm{pb}^{-1}$ taken at the center-of-mass energy of $\\sqrt{s} = 4.6$ GeV with the BESIII detector, we measure the absolute branching fraction …
View article: Study of the decays $D^+\rightarrowη^{(\prime)} e^+ν_{e}$
Study of the decays $D^+\rightarrowη^{(\prime)} e^+ν_{e}$ Open
The charm semileptonic decays $D^+\toηe^+ν_{e}$ and $D^+\toη'e^+ν_{e}$ are studied with a sample of $e^+e^-$ collision data corresponding to an integrated luminosity of 2.93 fb$^{-1}$ collected at $\sqrt{s}$ = 3.773 GeV with the BESIII det…
View article: Measurement of the branching fraction for the semi-leptonic decay $D^{0(+)}\to \pi^{-(0)}\mu^+\nu_\mu$ and test of lepton universality
Measurement of the branching fraction for the semi-leptonic decay $D^{0(+)}\to \pi^{-(0)}\mu^+\nu_\mu$ and test of lepton universality Open
Using a data sample corresponding to an integrated luminosity of $2.93\,\rm fb^{-1}$ taken at a center-of-mass energy of 3.773\,GeV with the BESIII detector operated at the BEPCII collider, we perform an analysis of the semi-leptonic decay…
View article: Determination of the number of ψ(3686) events at BESIII
Determination of the number of ψ(3686) events at BESIII Open
The numbers of ψ(3686) events accumulated by the BESIII detector for the data taken during 2009 and 2012 are determined to be and , respectively, by counting inclusive hadronic events, where the uncertainties are systematic and the statist…
View article: Search for $h_c → π^+ π^− J / ψ$ via $ψ ( 3686 ) → π^0 π^+ π^− J / ψ$
Search for $h_c → π^+ π^− J / ψ$ via $ψ ( 3686 ) → π^0 π^+ π^− J / ψ$ Open
Using a data sample of $448.1\\times10^6$ $\\psi(3686)$ events collected with the BESIII detector operating at the BEPCII, we perform search for the hadronic transition $h_c\\rightarrow\\pi^+\\pi^-J/\\psi$ via $\\psi(3686)\\rightarrow\\pi^…
View article: Dark photon search in the mass range between 1.5 and 3.4 GeV/c2
Dark photon search in the mass range between 1.5 and 3.4 GeV/c2 Open
Using a data set of 2.93 fb$^{-1}$ taken at a center-of-mass energy\n$\\sqrt{s}$ = 3.773 GeV with the BESIII detector at the BEPCII collider, we\nperform a search for an extra U(1) gauge boson, also denoted as a dark photon.\nWe examine th…