M. Dugger
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View article: Baryon anti-Baryon Photoproduction Cross Sections off the Proton
Baryon anti-Baryon Photoproduction Cross Sections off the Proton Open
The GlueX experiment at Jefferson Lab has observed $p\bar{p}$ and, for the first time, $Λ\barΛ$ and $p\barΛ$ photoproduction from a proton target at photon energies up to 11.6 GeV. The angular distributions are forward peaked for all produ…
View article: Measurement of the total compton scattering cross section between 6.5 and 11 GeV
Measurement of the total compton scattering cross section between 6.5 and 11 GeV Open
View article: Polarization Observables $T$ and $F$ in the $γp \to π^0 p$ Reaction at CLAS
Polarization Observables $T$ and $F$ in the $γp \to π^0 p$ Reaction at CLAS Open
Pion photoproduction in the $\overrightarrowγ\overrightarrow p \to π^0 p$ reaction has been measured in the FROST experiment at the Thomas Jefferson National Accelerator Facility. In this experiment, circularly polarized photons with energ…
View article: Measurement of Beam-Recoil Observables $C_x$ and $C_z$ for $K^+Λ$ Photoproduction
Measurement of Beam-Recoil Observables $C_x$ and $C_z$ for $K^+Λ$ Photoproduction Open
Exclusive photoproduction of $K^+ Λ$ final states off a proton target has been an important component in the search for missing nucleon resonances and our understanding of the production of final states containing strange quarks. Polarizat…
View article: Measurement of spin-density matrix elements in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>ϕ</mml:mi><mml:mrow><mml:mo>(</mml:mo><mml:mn>1020</mml:mn><mml:mo>)</mml:mo></mml:mrow><mml:mo>→</mml:mo><mml:msubsup><mml:mi>K</mml:mi><mml:mi>S</mml:mi><mml:mn>0</mml:mn></mml:msubsup><mml:msubsup><mml:mi>K</mml:mi><mml:mi>L</mml:mi><mml:mn>0</mml:mn></mml:msubsup></mml:mrow></mml:math> photoproduction with a linearly polarized photon beam at <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>E</mml:mi><mml:mi>γ</mml:mi></mml:msub><mml:mo>=</mml:mo><mml:mn>8.2</mml:mn><mml:mo>–</mml:mo><mml:mn>8.8</mml:mn><mml:mo> </mml:mo><mml:mi>GeV</mml:mi></mml:mrow></mml:math>
Measurement of spin-density matrix elements in photoproduction with a linearly polarized photon beam at Open
We measure the spin-density matrix elements (SDMEs) for the photoproduction of ϕ(1020) off of the proton in its decay to KS0KL0, using 105 pb−1 of data collected with a linearly polarized photon beam using the GlueX experiment. The SDMEs a…
View article: Recoil Polarization in $K^+Y$ Electroproduction in the Nucleon Resonance Region with CLAS12
Recoil Polarization in $K^+Y$ Electroproduction in the Nucleon Resonance Region with CLAS12 Open
Hyperon recoil polarization measurements for the exclusive electroproduction of $K^+\Lambda$ and $K^+\Sigma^0$ final states from an unpolarized proton target have been carried out using the CLAS12 spectrometer at Jefferson Laboratory. The …
View article: Measurement of single- and double-polarization observables in the photoproduction of $\pi^+\pi^-$~meson pairs off the proton using CLAS at Jefferson Laboratory
Measurement of single- and double-polarization observables in the photoproduction of $\pi^+\pi^-$~meson pairs off the proton using CLAS at Jefferson Laboratory Open
The photoproduction of $\pi^+\pi^-$ meson pairs off the proton has been studied in the reaction $\gamma p\to p\,\pi^+\pi^-$ using the CEBAF Large Acceptance Spectrometer (CLAS) and the frozen-spin target (FROST) in Hall B at the Thomas Jef…
View article: Measurement of spin-density matrix elements in Δ++(1232) photoproduction
Measurement of spin-density matrix elements in Δ++(1232) photoproduction Open
View article: Photoproduction of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msup><mml:mi mathvariant="normal">Σ</mml:mi><mml:mo>+</mml:mo></mml:msup></mml:math> hyperon using linearly polarized photons with CLAS
Photoproduction of the hyperon using linearly polarized photons with CLAS Open
Measurements of the polarization observables Σ,P,T,Ox,Oz for the reaction γ⃗p→KS0Σ+ using a linearly polarized photon beam of energy 1.1 to 2.1 GeV are reported. The measured data provide information on a channel that has not been studied e…
View article: Optimization of edge bead removal (EBR) process to enhance defect reduction in optical lithography
Optimization of edge bead removal (EBR) process to enhance defect reduction in optical lithography Open
View article: First Measurement of $a^0_2(1320)$ Polarized Photoproduction Cross Section
First Measurement of $a^0_2(1320)$ Polarized Photoproduction Cross Section Open
We measure for the first time the differential photoproduction cross section $dσ/dt$ of the $a_2(1320)$ meson at an average photon beam energy of 8.5~GeV, using data with an integrated luminosity of 104~pb$^{-1}$ collected by the GlueX exp…
View article: Upper Limit on the Photoproduction Cross Section of the Spin-Exotic <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>π</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn></mml:mrow></mml:msub><mml:mo stretchy="false">(</mml:mo><mml:mn>1600</mml:mn><mml:mo stretchy="false">)</mml:mo></mml:mrow></mml:math>
Upper Limit on the Photoproduction Cross Section of the Spin-Exotic Open
The spin-exotic hybrid meson π_{1}(1600) is predicted to have a large decay rate to the ωππ final state. Using 76.6 pb^{-1} of data collected with the GlueX detector, we measure the cross sections for the reactions γp→ωπ^{+}π^{-}p, γp→ωπ^{…
View article: A Sputter Flux Diagnostic Based Approach to Enabling Low Run-In for Sputter Deposited MoS2 Solid Lubricants
A Sputter Flux Diagnostic Based Approach to Enabling Low Run-In for Sputter Deposited MoS2 Solid Lubricants Open
View article: Retarding Field Energy Analyzer Based Analysis of DC Sputtered High Performance MoS2 Tribological Coatings
Retarding Field Energy Analyzer Based Analysis of DC Sputtered High Performance MoS2 Tribological Coatings Open
View article: Electrodeposition of Tribological Molybdenum Disulfide Coatings on Stainless Steel
Electrodeposition of Tribological Molybdenum Disulfide Coatings on Stainless Steel Open
View article: Upper Limit on the Photoproduction Cross Section of the Spin-Exotic $π_1(1600)$
Upper Limit on the Photoproduction Cross Section of the Spin-Exotic $π_1(1600)$ Open
The spin-exotic hybrid meson $π_{1}(1600)$ is predicted to have a large decay rate to the $ωππ$ final state. Using 76.6~pb$^{-1}$ of data collected with the GlueX detector, we measure the cross sections for the reactions $γp \to ωπ^+ π^- p…
View article: Mapping Denisty in Tribological Coatings After Wear Testing Using Low-Loss EELS
Mapping Denisty in Tribological Coatings After Wear Testing Using Low-Loss EELS Open
View article: Measurement of Spin-Density Matrix Elements in $Δ^{++}(1232)$ photoproduction
Measurement of Spin-Density Matrix Elements in $Δ^{++}(1232)$ photoproduction Open
We measure the spin-density matrix elements (SDMEs) of the $Δ^{++}(1232)$ in the photoproduction reaction $γp \to π^-Δ^{++}(1232)$ with the GlueX experiment in Hall D at Jefferson Lab. The measurement uses a linearly--polarized photon beam…
View article: Gas-phase interactions with electrical contact surfaces: Identifying, predicting, and preventing electrical materials compatibility issues due to outgassing
Gas-phase interactions with electrical contact surfaces: Identifying, predicting, and preventing electrical materials compatibility issues due to outgassing Open
View article: CHARACTERIZATION OF MOS2 FILMS VIA SIMULTANEOUS GRAZING INCIDENCE X-RAY DIFFRACTION AND GRAZING INCIDENCE X-RAY FLUORESCENCE (GIXRD/GIXRF)
CHARACTERIZATION OF MOS2 FILMS VIA SIMULTANEOUS GRAZING INCIDENCE X-RAY DIFFRACTION AND GRAZING INCIDENCE X-RAY FLUORESCENCE (GIXRD/GIXRF) Open
View article: A Bidirectional Reciprocating Experiment for Macroscale Friction Measurement
A Bidirectional Reciprocating Experiment for Macroscale Friction Measurement Open
View article: Resist Cast Duration: A Key Factor in Effective Edge Bead Removal (Ebr) Process
Resist Cast Duration: A Key Factor in Effective Edge Bead Removal (Ebr) Process Open
View article: Measurement of spin-density matrix elements in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>ρ</mml:mi><mml:mo>(</mml:mo><mml:mn>770</mml:mn><mml:mo>)</mml:mo></mml:mrow></mml:math> production with a linearly polarized photon beam at <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>E</mml:mi><mml:mi>γ</mml:mi></mml:msub><mml:mo>=</mml:mo><mml:mn>8.2</mml:mn><mml:mo>–</mml:mo><mml:mn>8.8</mml:mn><mml:mo> </mml:mo><mml:mi>GeV</mml:mi></mml:mrow></mml:math>
Measurement of spin-density matrix elements in production with a linearly polarized photon beam at Open
The GlueX experiment at Jefferson Lab studies photoproduction of mesons using linearly polarized 8.5GeV photons impinging on a hydrogen target which is contained within a detector with near-complete coverage for charged and neutral particl…
View article: Tribopolymer film formation in sliding electrical contact exposed to siloxanes.
Tribopolymer film formation in sliding electrical contact exposed to siloxanes. Open
View article: HOLM 2023 Awards Page
HOLM 2023 Awards Page Open
View article: Measurement of the helicity asymmetry $${\mathbb {E}}$$ for the $$\vec {\gamma }\vec {p} \rightarrow p \pi ^0$$ reaction in the resonance region
Measurement of the helicity asymmetry $${\mathbb {E}}$$ for the $$\vec {\gamma }\vec {p} \rightarrow p \pi ^0$$ reaction in the resonance region Open
View article: Measurement of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>J</mml:mi></mml:math>/<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>ψ</mml:mi></mml:math> photoproduction cross section over the full near-threshold kinematic region
Measurement of the / photoproduction cross section over the full near-threshold kinematic region Open
We report the total and differential cross sections for J/ψ photoproduction with the large acceptance GlueX spectrometer for photon beam energies from the threshold at 8.2 GeV up to 11.44 GeV and over the full kinematic range of momentum t…
View article: Optimization of Tribological Coatings for Low Friction Environments Through Predictive Machine Learning Models
Optimization of Tribological Coatings for Low Friction Environments Through Predictive Machine Learning Models Open
View article: Measurement of the helicity asymmetry $\mathbb{E}$ for the $\vecγ\vec{p} \to p π^0$ reaction in the resonance region
Measurement of the helicity asymmetry $\mathbb{E}$ for the $\vecγ\vec{p} \to p π^0$ reaction in the resonance region Open
The double-spin-polarization observable $\mathbb{E}$ for $\vecγ\vec{p}\to pπ^0$ has been measured with the CEBAF Large Acceptance Spectrometer (CLAS) at photon beam energies $E_γ$ from 0.367 to $2.173~\mathrm{GeV}$ (corresponding to center…
View article: Measurement of Spin-Density Matrix Elements in $ρ(770)$ Production with a Linearly Polarized Photon Beam at $E_γ= 8.2\,-\,8.8\,\text{GeV}$
Measurement of Spin-Density Matrix Elements in $ρ(770)$ Production with a Linearly Polarized Photon Beam at $E_γ= 8.2\,-\,8.8\,\text{GeV}$ Open
The GlueX experiment at Jefferson Lab studies photoproduction of mesons using linearly polarized $8.5\,\text{GeV}$ photons impinging on a hydrogen target which is contained within a detector with near-complete coverage for charged and neut…