R. Mitchell

activity

20062022

most citedHeavy quarkonium: progress, puzzles, and opportunities

1.8k citations · 11.9k across the 287 of their papers we have counts for

collaborators

Showing 2016Show all

20 papers · 1 filter

hep-ex2016★ 53 cited

Study of $J / ψ$ and $ψ (3686) \to Σ (1385)^{0} Σ ˉ (1385)^{0}$ and $Ξ^{0} Ξ ˉ^{0}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +426

We study the decays of $J / ψ$ and $ψ (3686)$ to the final states $Σ (1385)^{0} Σ ˉ (1385)^{0}$ and $Ξ^{0} Ξ ˉ^{0}$ based on a single baryon tag method using data samples of $(1310.6 \p…

hep-ex2016★ 4 cited

Observation of the helicity-selection-rule suppressed decay of the $χ_{c 2}$ charmonium state

BESIII Collaboration, M. Ablikim, M. N. Achasov +424

The decays of $χ_{c 2} \to K^{+} K^{-} π^{0}$ , $K_{S} K^{\pm} π^{\mp}$ and $π^{+} π^{-} π^{0}$ are studied with the $ψ (3686)$ data samples collected with the Beijing Spectrometer (BESIII)…

hep-ex2016★ 39 cited

Observation of $Λ_{c}^{+} \to n K_{S}^{0} π^{+}$

M. Ablikim, M. N. Achasov, S. Ahmed +424

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…

hep-ex2016★ 264 cited

Precise measurement of the $e^{+} e^{-} \to π^{+} π^{-} J / ψ$ cross section at center-of-mass energies from 3.77 to 4.60 GeV

M. Ablikim, M. N. Achasov, X. C. Ai +412

The cross section for the process $e^{+} e^{-} \to π^{+} π^{-} J / ψ$ 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 d…

hep-ex2016★ 189 cited

Evidence of Two Resonant Structures in $e^{+} e^{-} \to π^{+} π^{-} h_{c}$

M. Ablikim, M. N. Achasov, S. Ahmed +424

The cross sections of $e^{+} e^{-} \to π^{+} π^{-} h_{c}$ at center-of-mass energies from 3.896 to 4.600 GeV are measured using data samples collected with the BESIII detector operating a…

hep-ex2016★ 13 cited

Observation of $J / ψ \to γ η π^{0}$

M. Ablikim, M. N. Achasov, X. C. Ai +412

We present the first study of the process $J / ψ \to γ η π^{0}$ using $(223.7 \pm 1.4) \times 1 0^{6}$ $J / ψ$ events accumulated with the BESIII detector at the BEPCII facility. The b…

hep-ex2016★ 33 cited

Measurement of the $D_{s}^{+} \to ℓ^{+} ν_{ℓ}$ branching fractions and the decay constant $f_{D_{s}^{+}}$

M. Ablikim, M. N. Achasov, X. C. Ai +412

Using 482~pb $^{- 1}$ of $e^{+} e^{-}$ collision data collected at a center-of-mass energy of $s = 4.009$ GeV with the BESIII detector, we measure the branching fractions of the de…

hep-ex2016★ 18 cited

Measurements of the absolute branching fractions for $D_{s}^{+} \to η e^{+} ν_{e}$ and $D_{s}^{+} \to η^{'} e^{+} ν_{e}$

M. Ablikim, M. N. Achasov, X. C. Ai +412

By analyzing 482 pb $^{- 1}$ of $e^{+} e^{-}$ collision data collected at $s = 4.009$ GeV with the BESIII detector at the BEPCII collider, we measure the absolute branching fractions…

hep-ex2016★ 32 cited

Measurement of Singly Cabibbo Suppressed Decays $Λ_{c}^{+} \to p π^{+} π^{-}$ and $Λ_{c}^{+} \to p K^{+} K^{-}$

BESIII collaboration, M. Ablikim, M. N. Achasov +432

Using 567 $p b^{- 1}$ of data collected with the BESIII detector at a center-of-mass energy of $s =$ 4.599 $G e V$ , near the $Λ_{c}^{+} Λ_{c}^{-}$ threshold, we study the singly C…

hep-ex2016★ 65 cited

Determination of the number of $J / ψ$ events with inclusive $J / ψ$ decays

M. Ablikim, M. N. Achasov, X. C. Ai +405

A measurement of the number of $J / ψ$ events collected with the BESIII detector in 2009 and 2012 is performed using inclusive decays of the $J / ψ$ . The number of $J / ψ$ events taken…

hep-ex2016★ 51 cited

Improved measurement of the absolute branching fraction of $D^{+} \to K ˉ^{0} μ^{+} ν_{μ}$

M. Ablikim, M. N. Achasov, X. C. Ai +419

By analyzing 2.93 fb $^{- 1}$ of data collected at $s = 3.773$ GeV with the BESIII detector, we measure the absolute branching fraction ${\mathcal B}(D^{+}\rightarrow\bar K^0μ^{+…

hep-ex2016★ 6 cited

Amplitude Analysis of the Decays $η^{'} \to π^{+} π^{-} π^{0}$ and $η^{'} \to π^{0} π^{0} π^{0}$

M. Ablikim, M. N. Achasov, X. C. Ai +419

Based on a sample of $1.31 \times 1 0^{9}$ $J / ψ$ events collected with the BESIII detector, an amplitude analysis of the isospin-violating decays $η^{'} \to π^{+} π^{-} π^{0}$ and…

hep-ex2016★ 23 cited

Observation of $e^{+} e^{-} \to η^{'} J / ψ$ at center-of-mass energies between 4.189 and 4.600 GeV

M. Ablikim, M. N. Achasov, S. Ahmed +428

The process $e^{+} e^{-} \to η^{'} J / ψ$ is observed for the first time with a statistical significance of $8.6 σ$ at center-of-mass energy $s = 4.226$ GeV and $7.3 σ$ at $\…

hep-ex2016★ 55 cited

Observation of an anomalous line shape of the $η^{'} π^{+} π^{-}$ mass spectrum near the $p p ˉ$ mass threshold in $J / ψ \to γ η^{'} π^{+} π^{-}$

M. Ablikim, M. N. Achasov, S. Ahmed +431

Using $1.09 \times 1 0^{9}$ $J / ψ$ events collected by the BESIII experiment in 2012, we study the $J / ψ \to γ η^{'} π^{+} π^{-}$ process and observe a significant abrupt change…

hep-ex2016★ 8 cited

Measurement of the leptonic decay width of $J / ψ$ using initial state radiation

BESIII Collaboration, M. Ablikim, M. N. Achasov +414

Using a data set of 2.93 fb $^{- 1}$ taken at a center-of-mass energy of $s$ = 3.773 GeV with the BESIII detector at the BEPCII collider, we measure the process $e^+e^-\righta…

hep-ex2016★ 16 cited

Observation of $h_{c}$ radiative decay $h_{c} \to γ η^{'}$ and evidence for $h_{c} \to γ η$

M. Ablikim, M. N. Achasov, X. C. Ai +420

A search for radiative decays of the $P$ -wave spin singlet charmonium resonance $h_{c}$ is performed based on $4.48 \times 1 0^{8}$ $ψ^{'}$ events collected with the BESIII detector ope…

hep-ex2016★ 11 cited

Search for the weak decay $η^{'} \to K^{\pm} π^{\mp}$ and precise measurement of the branching fraction $B (J / ψ \to ϕ η^{'})$

BESIII Collaboration, M. Ablikim, M. N. Achasov +414

We present the first search for the rare decay of $η^{'}$ into $K^{\pm} π^{\mp}$ in $J / ψ \to ϕ η^{'}$ , using a sample of $1.3 \times 1 0^{9}$ $J / ψ$ events collected with the BESII…

hep-ex2016★ 47 cited

Study of $ψ$ decays to the $Ξ^{-} Ξ ˉ^{+}$ and $Σ (1385)^{\mp} Σ ˉ (1385)^{\pm}$ final states

BESIII Collaboration, M. Ablikim, M. N. Achasov +407

We study the decays of the charmonium resonances $J / ψ$ and $ψ (3686)$ to the final states $Ξ^{-} Ξ ˉ^{+}$ , $Σ (1385)^{\mp} Σ ˉ (1385)^{\pm}$ based on a single baryon tag method usin…

hep-ex2016★ 7 cited

Observation of pseudoscalar and tensor resonances in $J / ψ \to γ ϕϕ$

M. Ablikim, M. N. Achasov, X. C. Ai +406

Based on a sample of $(1310.6 \pm 10.5) \times 1 0^{6}$ $J / ψ$ events collected with the BESIII detector operating at the BEPCII storage ring, a partial wave analysis of the decay $J…

nucl-ex2016★ 49 cited

First Results from The GlueX Experiment

The GlueX Collaboration, H. Al Ghoul, E. G. Anassontzis +108

The GlueX experiment at Jefferson Lab ran with its first commissioning beam in late 2014 and the spring of 2015. Data were collected on both plastic and liquid hydrogen targets, an…

Study of J/ψ and ψ(3686)→Σ(1385)0Σˉ(1385)0 and Ξ0Ξˉ0

Observation of the helicity-selection-rule suppressed decay of the χc2​ charmonium state

Observation of Λc+​→nKS0​π+

Precise measurement of the e+e−→π+π−J/ψ cross section at center-of-mass energies from 3.77 to 4.60 GeV

Evidence of Two Resonant Structures in e+e−→π+π−hc​

Observation of J/ψ→γηπ0

Measurement of the Ds+​→ℓ+νℓ​ branching fractions and the decay constant fDs+​​

Measurements of the absolute branching fractions for Ds+​→ηe+νe​ and Ds+​→η′e+νe​

Measurement of Singly Cabibbo Suppressed Decays Λc+​→pπ+π− and Λc+​→pK+K−

Determination of the number of J/ψ events with inclusive J/ψ decays

Improved measurement of the absolute branching fraction of D+→Kˉ0μ+νμ​

Amplitude Analysis of the Decays η′→π+π−π0 and η′→π0π0π0

Observation of e+e−→η′J/ψ at center-of-mass energies between 4.189 and 4.600 GeV

Observation of an anomalous line shape of the η′π+π− mass spectrum near the ppˉ​ mass threshold in J/ψ→γη′π+π−

Measurement of the leptonic decay width of J/ψ using initial state radiation

Observation of hc​ radiative decay hc​→γη′ and evidence for hc​→γη

Search for the weak decay η′→K±π∓ and precise measurement of the branching fraction B(J/ψ→ϕη′)

Study of ψ decays to the Ξ−Ξˉ+ and Σ(1385)∓Σˉ(1385)± final states

Observation of pseudoscalar and tensor resonances in J/ψ→γϕϕ

First Results from The GlueX Experiment

Study of $J / ψ$ and $ψ (3686) \to Σ (1385)^{0} Σ ˉ (1385)^{0}$ and $Ξ^{0} Ξ ˉ^{0}$

Observation of the helicity-selection-rule suppressed decay of the $χ_{c 2}$ charmonium state

Observation of $Λ_{c}^{+} \to n K_{S}^{0} π^{+}$

Precise measurement of the $e^{+} e^{-} \to π^{+} π^{-} J / ψ$ cross section at center-of-mass energies from 3.77 to 4.60 GeV

Evidence of Two Resonant Structures in $e^{+} e^{-} \to π^{+} π^{-} h_{c}$

Observation of $J / ψ \to γ η π^{0}$

Measurement of the $D_{s}^{+} \to ℓ^{+} ν_{ℓ}$ branching fractions and the decay constant $f_{D_{s}^{+}}$

Measurements of the absolute branching fractions for $D_{s}^{+} \to η e^{+} ν_{e}$ and $D_{s}^{+} \to η^{'} e^{+} ν_{e}$

Measurement of Singly Cabibbo Suppressed Decays $Λ_{c}^{+} \to p π^{+} π^{-}$ and $Λ_{c}^{+} \to p K^{+} K^{-}$

Determination of the number of $J / ψ$ events with inclusive $J / ψ$ decays

Improved measurement of the absolute branching fraction of $D^{+} \to K ˉ^{0} μ^{+} ν_{μ}$

Amplitude Analysis of the Decays $η^{'} \to π^{+} π^{-} π^{0}$ and $η^{'} \to π^{0} π^{0} π^{0}$

Observation of $e^{+} e^{-} \to η^{'} J / ψ$ at center-of-mass energies between 4.189 and 4.600 GeV

Observation of an anomalous line shape of the $η^{'} π^{+} π^{-}$ mass spectrum near the $p p ˉ$ mass threshold in $J / ψ \to γ η^{'} π^{+} π^{-}$

Measurement of the leptonic decay width of $J / ψ$ using initial state radiation

Observation of $h_{c}$ radiative decay $h_{c} \to γ η^{'}$ and evidence for $h_{c} \to γ η$

Search for the weak decay $η^{'} \to K^{\pm} π^{\mp}$ and precise measurement of the branching fraction $B (J / ψ \to ϕ η^{'})$

Study of $ψ$ decays to the $Ξ^{-} Ξ ˉ^{+}$ and $Σ (1385)^{\mp} Σ ˉ (1385)^{\pm}$ final states

Observation of pseudoscalar and tensor resonances in $J / ψ \to γ ϕϕ$