M. R. Shepherd

activity

20042025

most citedObservation of a charged charmoniumlike structure in e+e- to pi+pi-J/psi at \sqrt{s}=4.26 GeV

919 citations · 2.6k across the 33 of their papers we have counts for

collaborators

33 papers

hep-ex2025★ 1 cited

Measurement of Spin-Density Matrix Elements in $ϕ (1020) \to K_{S}^{0} K_{L}^{0}$ Photoproduction with a Linearly Polarized Photon Beam at $E_{γ} = 8.2 - 8.8$ GeV

GlueX Collaboration

We measure the spin-density matrix elements (SDMEs) for the photoproduction of $ϕ (1020)$ off of the proton in its decay to $K_{S}^{0} K_{L}^{0}$ , using 105 pb $^{- 1}$ of data collected with…

hep-ex2021★ 12 cited

Search for photoproduction of axion-like particles at GlueX

GlueX Collaboration, S. Adhikari, C. S. Akondi +142

We present a search for axion-like particles, $a$ , produced in photon-proton collisions at a center-of-mass energy of approximately 4 GeV, focusing on the scenario where the $a$ -gl…

hep-ex2017★ 85 cited

Determination of the number of $ψ (3686)$ events at BESIII

M. Ablikim, M. N. Achasov, S. Ahmed +430

The numbers of $ψ (3686)$ events accumulated by the BESIII detector for the two rounds of data taking during 2009 and 2012 are determined to be $(107.0 \pm 0.8) \times 1 0^{6}$ and $(341.…

hep-ex2015★ 253 cited

Measurement of the $e^{+} e^{-} \to π^{+} π^{-}$ Cross Section between 600 and 900 MeV Using Initial State Radiation

M. Ablikim, M. N. Achasov, X. C. Ai +398

We extract the $e^{+} e^{-} \to π^{+} π^{-}$ cross section in the energy range between 600 and 900 MeV, exploiting the method of initial state radiation. A data set with an integrated…

hep-ex2013★ 14 cited

Search for the $η_{c} (2 S) / h_{c} \to p p ˉ$ decays and measurements of the $χ_{c J} \to p p ˉ$ branching fractions

BESlll Collaboration, M. Ablikim, M. N. Achasov +374

Using a sample of $1.06 \times 1 0^{8} ψ (3686)$ events collected with the BESIII detector at BEPCII, the decays $η_{c} (2 S) \to p p ˉ$ and $h_{c} \to p p ˉ$ are searched for, where…

hep-ex2013★ 18 cited

Partial wave analysis of $ψ (2 S) \to p p ˉ η$

M. Ablikim, M. N. Achasov, O. Albayrak +360

Using a sample of $1.06 \times 1 0^{8}$ $ψ (2 S)$ events collected with the BESIII detector at BEPCII, the decay $ψ (2 S) \to p p ˉ η$ is studied. A partial wave analysis determines…

Measurement of Spin-Density Matrix Elements in ϕ(1020)→KS0​KL0​ Photoproduction with a Linearly Polarized Photon Beam at Eγ​=8.2−8.8 GeV

Search for photoproduction of axion-like particles at GlueX

Determination of the number of ψ(3686) events at BESIII

Measurement of the e+e−→π+π− Cross Section between 600 and 900 MeV Using Initial State Radiation

Search for the ηc​(2S)/hc​→ppˉ​ decays and measurements of the χcJ​→ppˉ​ branching fractions

Partial wave analysis of ψ(2S)→ppˉ​η

Measurement of Spin-Density Matrix Elements in $ϕ (1020) \to K_{S}^{0} K_{L}^{0}$ Photoproduction with a Linearly Polarized Photon Beam at $E_{γ} = 8.2 - 8.8$ GeV

Determination of the number of $ψ (3686)$ events at BESIII

Measurement of the $e^{+} e^{-} \to π^{+} π^{-}$ Cross Section between 600 and 900 MeV Using Initial State Radiation

Search for the $η_{c} (2 S) / h_{c} \to p p ˉ$ decays and measurements of the $χ_{c J} \to p p ˉ$ branching fractions

Partial wave analysis of $ψ (2 S) \to p p ˉ η$