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NSR database version of April 11, 2024.

Search: Author = D.S.Armstrong

Found 30 matches.

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2021SU25      Nat.Phys. 17, 687 (2021), Erratum Nat.Phys. 18, 473 (2022)

V.Sulkosky, C.Peng, J.Chen, A.Deur, S.Abrahamyan, K.A.Aniol, D.S.Armstrong, T.Averett, S.L.Bailey, A.Beck, P.Bertin, F.Butaru, W.Boeglin, A.Camsonne, G.D.Cates, C.-C.Chang, S.Choi, E.Chudakov, L.Coman, J.C.Cornejo, B.Craver, F.Cusanno, R.De Leo, C.W.de Jager, J.D.Denton, S.Dhamija, R.Feuerbach, J.M.Finn, S.Frullani, K.Fuoti, H.Gao, F.Garibaldi, O.Gayou, R.Gilman, A.Glamazdin, C.Glashausser, J.Gomez, J.-O.Hansen, D.Hayes, F.W.Hersman, D.W.Higinbotham, T.Holmstrom, T.B.Humensky, C.E.Hyde, H.Ibrahim, M.Iodice, X.Jiang, L.J.Kaufman, A.Kelleher, K.E.Keister, W.Kim, A.Kolarkar, N.Kolb, W.Korsch, K.Kramer, G.Kumbartzki, L.Lagamba, V.Laine, G.Laveissiere, J.J.Lerose, D.Lhuillier, R.Lindgren, N.Liyanage, H.-J.Lu, B.Ma, D.J.Margaziotis, P.Markowitz, K.R.McCormick, M.Meziane, Z.-E.Meziani, R.Michaels, B.Moffit, P.Monaghan, S.Nanda, J.Niedziela, M.Niskin, R.Pandolfi, K.D.Paschke, M.Potokar, A.Puckett, V.A.Punjabi, Y.Qiang, R.D.Ransome, B.Reitz, R.Roche, A.Saha, A.Shabetai, S.Sirca, J.T.Singh, K.Slifer, R.Snyder, P.Solvignon, R.Stringer, R.Subedi, W.A.Tobias, N.Ton, P.E.Ulmer, G.M.Urciuoli, A.Vacheret, E.Voutier, K.Wang, L.Wan, B.Wojtsekhowski, S.Woo, H.Yao, J.Yuan, X.Zhan, X.Zheng, L.Zhu

Measurement of the generalized spin polarizabilities of the neutron in the low-Q2 region

NUCLEAR REACTIONS 3He(polarized e-, e-), E=1.1-4.4 GeV; measured reaction products, Eβ, Iβ. 1NN; deduced transverse-transverse and longitudinal-transverse interference σ, generalized neutron spin polarizabilities. Comparison with chiral effective field theory calculations.

doi: 10.1038/s41567-021-01245-9
Citations: PlumX Metrics


2007AR23      Phys.Rev.Lett. 99, 092301 (2007)

D.S.Armstrong, and the G0 Collaboration

Transverse Beam Spin Asymmetries in Forward-Angle Elastic Electron-Proton Scattering

doi: 10.1103/PhysRevLett.99.092301
Citations: PlumX Metrics


2007AR28      Eur.Phys.J. A 32, 451 (2007)

D.S.Armstrong, for the HAPPEX Collaboration

New results from the HAPPEX Experiments at Q2 = 0.1 GeV/c2

doi: 10.1140/epja/i2006-10394-y
Citations: PlumX Metrics


2007TR05      Phys.Rev. C 75, 064603 (2007)

S.Tripathi, D.S.Armstrong, M.E.Christy, J.H.D.Clark, T.P.Gorringe, M.D.Hasinoff, M.A.Kovash, D.H.Wright, P.A.Zolnierczuk

Double radiative pion capture on hydrogen and deuterium and the nucleon's pion cloud

doi: 10.1103/PhysRevC.75.064603
Citations: PlumX Metrics


2005AR21      Phys.Rev.Lett. 95, 092001 (2005)

D.S.Armstrong, and the G0 Collaboration

Strange-Quark Contributions to Parity-Violating Asymmetries in the Forward G0 Electron-Proton scattering Experiment

NUCLEAR REACTIONS 1H(e, e), E=3.03 GeV; measured forward angle parity-violating asymmetries, strange-quark contributions.

doi: 10.1103/PhysRevLett.95.092001
Citations: PlumX Metrics


2005KR14      Phys.Rev.Lett. 95, 142002 (2005)

K.Kramer, D.S.Armstrong, T.D.Averett, W.Bertozzi, S.Binet, C.Butuceanu, A.Camsonne, G.D.Cates, J.-P.Chen, S.Choi, E.Chudakov, F.Cusanno, A.Deur, P.Djawotho, D.Dutta, J.M.Finn, H.Gao, F.Garibaldi, O.Gayou, R.Gilman, A.Glamazdin, V.Gorbenko, K.A.Griffioen, J.-O.Hansen, D.W.Higinbotham, W.Hinton, T.Horn, C.W.de Jager, X.Jiang, W.Korsch, J.LeRose, D.Lhuillier, N.Liyanage, D.J.Margaziotis, K.McCormick, Z.-E.Meziani, R.Michaels, B.Milbrath, B.Moffit, S.Nanda, C.F.Perdrisat, R.Pomatsalyuk, V.Punjabi, B.Reitz, J.Roche, R.Roche, M.Roedelbronn, N.Savvinov, J.Secrest, J.Singh, S.Sirca, K.Slifer, P.Solvignon, D.J.Steiner, R.Suleiman, V.Sulkosky, A.Tobias, A.Vacheret, Y.Xiao, X.Zheng, J.Zhou, L.Zhu, X.Zhu, P.A.Zolnierczuk

Q2 Dependence of the Neutron Spin Structure Function gn2 at Low Q2

NUCLEAR REACTIONS 3He(polarized e, e'), E=3.465-5.727 GeV; measured parallel and perpendicular cross section differences. 1n, 3He deduced momentum transfer dependence of spin structure function.

doi: 10.1103/PhysRevLett.95.142002
Citations: PlumX Metrics


2004ZO04      Phys.Lett. B 597, 131 (2004)

P.A.Zolnierczuk, D.S.Armstrong, E.Christy, J.H.D.Clark, T.P.Gorringe, M.D.Hasinoff, M.A.Kovash, S.Tripathi, D.H.Wright

Search for exotic baryons in double radiative capture on pionic hydrogen

NUCLEAR REACTIONS 1H(π-, γ), E at rest; measured Eγ, Iγ, γγ-coin; deduced branching ratio upper limit for exotic baryon production.

doi: 10.1016/j.physletb.2004.07.008
Citations: PlumX Metrics


2002AR19      Phys.Rev. C 66, 065501 (2002)

S.Arole, D.S.Armstrong, T.P.Gorringe, M.D.Hasinoff, M.A.Kovash, V.Kuzmin, B.A.Moftah, R.Sedlar, T.J.Stocki, T.Tetereva

Muon capture on 35Cl

NUCLEAR REACTIONS 35Cl(μ-, ν), E at rest; measured Eγ, Iγ; deduced capture rate, hyperfine dependences, γ-ν correlation coefficients. Comparison with model predictions.

doi: 10.1103/PhysRevC.66.065501
Citations: PlumX Metrics


2002TR17      Phys.Rev.Lett. 89, 252501 (2002)

S.Tripathi, D.S.Armstrong, M.E.Christy, J.H.D.Clark, T.P.Gorringe, M.D.Hasinoff, M.A.Kovash, D.W.Wright, P.A.Zolnierczuk

Observation of Double Radiative Capture on Pionic Hydrogen

NUCLEAR REACTIONS 1H(π-, 2γ), E at 81.5 MeV/c; measured Eγ, γγ-coin, angular distributions; deduced branching ratio for double radiative capture.

doi: 10.1103/PhysRevLett.89.252501
Citations: PlumX Metrics


1999BE16      Phys.Rev. C59, 2853 (1999)

P.C.Bergbusch, D.S.Armstrong, M.Blecher, C.Q.Chen, B.C.Doyle, T.P.Gorringe, P.Gumplinger, M.D.Hasinoff, G.Jonkmans, J.A.Macdonald, J.-M.Poutissou, R.Poutissou, C.N.Sigler, D.H.Wright

Radiative Muon Capture on O, Al, Si, Ti, Zr, and Ag

NUCLEAR REACTIONS O, 27Al, Si, Ti, Zr, Ag(μ-, γ), E at rest; measured branching ratio for radiative capture; deduced ratio of weak pseudoscaler to axial coupling constants.

doi: 10.1103/PhysRevC.59.2853
Citations: PlumX Metrics


1999GO23      Phys.Rev. C60, 055501 (1999)

T.P.Gorringe, D.S.Armstrong, S.Arole, M.Boleman, E.Gete, V.Kuzmin, B.A.Moftah, R.Sedlar, T.J.Stocki, T.Tetereva

Measurement of Partial Muon Capture Rates in 1s-0d Shell Nuclei

NUCLEAR REACTIONS 24Mg, 28Si, 31P, 32S(μ-, γ), (μ-, ν), E at rest; measured Eγ, Iγ, γ-ray yields, capture rates; deduced effective axial coupling. Comparisons with shell model predictions, previous data.

doi: 10.1103/PhysRevC.60.055501
Citations: PlumX Metrics


1998GO18      Phys.Rev. C58, 1767 (1998)

T.P.Gorringe, D.S.Armstrong, C.Q.Chen, E.Christy, B.C.Doyle, P.Gumplinger, H.W.Fearing, M.D.Hasinoff, M.A.Kovash, D.H.Wright

Isotope Dependence of Radiative Muon Capture on the 58, 60, 62Ni Isotopes

NUCLEAR REACTIONS 58,60,62Ni(μ-, ν), E at 63 MeV/c; measured Eγ, Iγ, radiative capture branching ratios; deduced weak pseudoscalar coupling constant. Comparison with Fermi gas model.

doi: 10.1103/PhysRevC.58.1767
Citations: PlumX Metrics


1998WR01      Phys.Rev. C57, 373 (1998)

D.H.Wright, S.Ahmad, D.S.Armstrong, G.Azuelos, W.Bertl, M.Blecher, C.Q.Chen, P.Depommier, B.C.Doyle, T.von Egidy, T.P.Gorringe, P.Gumplinger, M.D.Hasinoff, D.Healey, G.Jonkmans, A.J.Larabee, J.A.Macdonald, S.C.McDonald, M.Munro, J.-M.Poutissou, R.Poutissou, B.C.Robertson, D.G.Sample, E.Saettler, C.N.Sigler, G.N.Taylor, N.S.Zhang

Measurement of the Induced Pseudoscalar Coupling using Radiative Muon Capture on Hydrogen

NUCLEAR REACTIONS 1H(μ-, n), E at 63 MeV/c; measured Eγ, Iγ; deduced radiative muon capture branching ratio, weak pseudoscalar coupling.

doi: 10.1103/PhysRevC.57.373
Citations: PlumX Metrics


1997MO11      Phys.Lett. 395B, 157 (1997)

B.A.Moftah, E.Gete, D.F.Measday, D.S.Armstrong, J.Bauer, T.P.Gorringe, B.L.Johnson, B.Siebels, S.Stanislaus

Muon Capture in 28Si and g(p)/g(a)

NUCLEAR REACTIONS 28Si(μ-, ν), E at rest; measured νγ(θ); deduced angular correlation coefficient, g(p)/g(a).

doi: 10.1016/S0370-2693(97)00081-6
Citations: PlumX Metrics


1996AB32      Nucl.Phys. A609, 562 (1996); Erratum Nucl.Phys. A625, 899 (1997)

A.Abele, J.Adomeit, D.S.Armstrong, C.A.Baker, C.J.Batty, M.Benayoun, A.Berdoz, K.Beuchert, S.Bischoff, P.Blum, K.Braune, D.V.Bugg, T.Case, A.R.Cooper, O.Cramer, K.M.Crowe, H.P.Dietz, N.Djaoshvili, W.Dunnweber, D.Engelhardt, M.Englert, M.A.Faessler, R.P.Haddock, F.H.Heinsius, M.Herz, N.P.Hessey, P.Hidas, C.Holtzhaussen, P.Illinger, D.Jamnik, B.Kammle, P.Kammel, T.Kiel, H.Koch, C.Kolo, M.Lakata, H.Matthay, R.McCrady, J.Meier, C.A.Meyer, L.Montanet, C.N.Pinder, G.Pinter, C.Regenfus, J.Reissmann, W.Rothel, P.Schmidt, I.Scott, R.Seibert, C.Strassburger, U.Strohbusch, M.Suffert, U.Thoma, M.Tischhauser, C.Volcker, D.Walther, B.Zou

Further Analysis of (p-bar)p → 3π0, ηηπ0 and ηπ0π0 at Rest

NUCLEAR REACTIONS 1H(p-bar, X), E at rest; analyzed 3π0, 2ηπ0, η2π0 production data; deduced f0, f2 resonances, widths.

doi: 10.1016/S0375-9474(96)00306-5
Citations: PlumX Metrics


1996AR31      Hyperfine Interactions 103, 169 (1996)

D.S.Armstrong, J.Bauer, J.Evans, T.P.Gorringe, B.L.Johnson, S.Kalvoda, R.Porter, B.Siebels, E.Gete, D.F.Measday, B.A.Moftah, S.Stanislaus

Muon Capture by Silicon 28

NUCLEAR REACTIONS 28Si(μ-, γ), E at rest; measured Eγ, Iγ; deduced nuclear recoil, γν-correlation coefficient.


1996JO21      Phys.Rev. C54, 2714 (1996)

B.L.Johnson, T.P.Gorringe, D.S.Armstrong, J.Bauer, M.D.Hasinoff, M.A.Kovash, D.F.Measday, B.A.Moftah, R.Porter, D.H.Wright

Observables in Muon Capture on 23Na and the Effective Weak Couplings g(∼)(a) and g(∼)(p)

NUCLEAR REACTIONS 23Na(μ-, X), E at rest; measured γ spectra, yield after residuals decay. 23,22,21,20Ne, 20F levels deduced capture rates, hyperfine dependence.

doi: 10.1103/PhysRevC.54.2714
Citations: PlumX Metrics


1996JO22      Phys.Rev.Lett. 77, 4512 (1996)

G.Jonkmans, S.Ahmad, D.S.Armstrong, G.Azuelos, W.Bertl, M.Blecher, C.Q.Chen, P.Depommier, B.C.Doyle, T.von Egidy, T.P.Gorringe, P.Gumplinger, M.D.Hasinoff, D.Healey, A.J.Larabee, J.A.Macdonald, S.C.McDonald, M.Munro, J.-M.Poutissou, R.Poutissou, B.C.Robertson, D.G.Sample, E.Saettler, C.M.Sigler, G.N.Taylor, D.H.Wright, N.S.Zhang

Radiative Muon Capture on Hydrogen and the Induced Pseudoscalar Coupling

NUCLEAR REACTIONS 1H(μ-, γ), E at rest; measured photons partial branching ratio; deduced weak pseudoscalar coupling constant, related features.

doi: 10.1103/PhysRevLett.77.4512
Citations: PlumX Metrics


1994GO07      Phys.Rev.Lett. 72, 3472 (1994)

T.P.Gorringe, B.L.Johnson, D.S.Armstrong, J.Bauer, M.A.Kovash, M.D.Hasinoff, D.F.Measday, B.A.Moftah, R.Porter, D.H.Wright

Hyperfine Effect in μ- Capture on 23Na and g(p)/g(a)

NUCLEAR REACTIONS 23Na(μ-, γ), E at rest; measured capture rates, hyperfine transition rate in Na metal; deduced (g(p)/g(a)).

ATOMIC PHYSICS 23Na(μ-, γ), E at rest; measured capture rates, hyperfine transition rate in Na metal; deduced (g(p)/g(a)).

doi: 10.1103/PhysRevLett.72.3472
Citations: PlumX Metrics


1993GO09      Phys.Lett. 309B, 241 (1993)

T.P.Gorringe, B.L.Johnson, J.Bauer, M.A.Kovash, R.Porter, P.Gumplinger, M.D.Hasinoff, D.F.Measday, B.A.Moftah, D.S.Armstrong, D.H.Wright

Measurement of Hyperfine Transition Rates in Muonic 19F, 23Na, 31P, and (nat)Cl

NUCLEAR REACTIONS 19F, 23Na, Cl(μ-, ν), E at rest; measured capture transitions time spectra; deduced hyperfine transition rates.

ATOMIC PHYSICS, Mesic-Atoms 19F, 23Na, Cl(μ-, ν), E at rest; measured capture transitions time spectra; deduced hyperfine transition rates.

doi: 10.1016/0370-2693(93)90927-A
Citations: PlumX Metrics


1993GO27      Nucl.Instrum.Methods Phys.Res. B79, 303 (1993)

T.P.Gorringe, J.Bauer, B.L.Johnson, M.A.Kovash, R.Porter, P.Gumplinger, M.D.Hasinoff, D.F.Measday, B.Moftah, D.S.Armstrong, D.H.Wright

Measurement of the Hyperfine Transition Rates in μ- F, Na, Al, P, and Cl, and the Hyperfine Dependence of μ- Capture

NUCLEAR MOMENTS 19F, 23Na, 27Al, 31P, 35,37Cl; measured hyperfine transition rates following muon capture.

doi: 10.1016/0168-583X(93)95350-E
Citations: PlumX Metrics


1992AR14      Phys.Rev. C46, 1094 (1992)

D.S.Armstrong, A.Serna-Angel, S.Ahmad, G.Azuelos, W.Bertl, M.Blecher, C.Q.Chen, P.Depommier, T.von Egidy, T.P.Gorringe, M.D.Hasinoff, R.S.Henderson, A.J.Larabee, J.A.Macdonald, S.C.McDonald, J.-M.Poutissou, R.Poutissou, B.C.Robertson, D.G.Sample, G.N.Taylor, D.H.Wright, N.S.Zhang

Radiative Muon Capture on Al, Si, Ca, Mo, Sn, and Pb

NUCLEAR REACTIONS 27Al, 28Si, 40Ca, Mo, Sn, Pb(μ-, γ), E at rest; measured γ yield; deduced induced pseudoscalar coupling constant (g(p)).

doi: 10.1103/PhysRevC.46.1094
Citations: PlumX Metrics


1992BE70      Z.Phys. C56, S150 (1992)

W.Bertl, S.Ahmad, D.S.Armstrong, G.Azuelos, M.Blecher, C.Q.Chen, P.Depommier, P.Gumplinger, T.P.Gorringe, M.D.Hasinoff, R.Henderson, G.Jonkmans, A.J.Larabee, J.A.Macdonald, S.C.McDonald, J.-M.Poutissou, R.Poutissou, B.C.Robertson, D.G.Sample, W.Schott, G.N.Taylor, T.von Egidy, D.H.Wright, N.S.Zhang

Radiative muon capture on hydrogen

NUCLEAR REACTIONS 1H(π-, γ), (π-, π0), (μ-, X), (μ+, X), E at rest; measured Eγ, Iγ.

doi: 10.1007/BF02426790
Citations: PlumX Metrics


1991AR02      Phys.Rev. C43, 1425 (1991)

D.S.Armstrong, S.Ahmad, R.A.Burnham, T.P.Gorringe, M.D.Hasinoff, A.J.Larabee, C.E.Waltham, G.Azuelos, J.A.Macdonald, T.Numao, J.-M.Poutissou, M.Blecher, D.H.Wright, E.T.H.Clifford, J.Summhammer, P.Depommier, R.Poutissou, H.Mes, B.C.Robertson

Radiative Muon Capture on Carbon, Oxygen, and Calcium

NUCLEAR REACTIONS 12C, 16O, 40Ca(μ-, γ), E at rest; measured Eγ, Iγ; deduced g(p)/g(a).

doi: 10.1103/PhysRevC.43.1425
Citations: PlumX Metrics


1990AZ05      Ann.Phys.(Paris) 15, 13 (1990)

G.Azuelos, S.Ahmad, D.S.Armstrong, W.Bertl, M.Blecher, R.A.Burnham, C.-Q.Chen, P.Depommier, T.von Egidy, T.P.Gorringe, M.D.Hasinoff, R.Henderson, A.J.Larabee, J.A.MacDonald, S.C.McDonald, J.-M.Poutissou, R.Poutissou, B.C.Robertson, A.Serna-Angel, G.N.Taylor, C.E.Waltham, D.H.Wright, N.-S.Zhang

Capture Radiative des Muons sur les Noyaux et le Proton

NUCLEAR REACTIONS 1H(μ-, ν), E at rest; analyzed capture reaction data; deduced g(P) inference features.


1989AR07      Phys.Rev. C40, R1100 (1989)

D.S.Armstrong, S.Ahmad, R.A.Burnham, T.P.Gorringe, M.D.Hasinoff, A.J.Larabee, C.E.Waltham, G.Azuelos, J.A.Macdonald, J.-M.Poutissou, M.Blecher, D.H.Wright, E.T.H.Clifford, J.Summhammer, P.Depommier, R.Poutissou, H.Mes, B.C.Robertson

Radiative Muon Capture on Oxygen and the Induced Pseudoscalar Coupling

NUCLEAR REACTIONS 16O(μ-, γ), E at rest; measured γ spectrum. 16O deduced (gp/ga).

doi: 10.1103/PhysRevC.40.R1100
Citations: PlumX Metrics


1989GO17      Phys.Rev. C40, 2390 (1989)

T.P.Gorringe, S.Ahmad, D.S.Armstrong, R.A.Burnham, M.D.Hasinoff, A.J.Larabee, C.E.Waltham, G.Azuelos, J.A.Macdonald, J.-M.Poutissou, M.Blecher, D.H.Wright, P.Depommier, R.Poutissou, E.T.H.Clifford

Search for the Tetraneutron using the Reaction 4He(π-, π+)4n

NUCLEAR REACTIONS 4He(π-, π+), E=80 MeV; measured pion momentum spectra; deduced tetraneutron production σ upper limit.

doi: 10.1103/PhysRevC.40.2390
Citations: PlumX Metrics


1989ST01      Phys.Rev. C39, 295 (1989)

S.Stanislaus, D.S.Armstrong, D.F.Measday

Search for the Spontaneous Emission of Pions

RADIOACTIVITY Pb, 209Bi, 232Th, 238,235U, 252Cf; measured π0 production limit; deduced branching ratio limit relative to SF-decay.

doi: 10.1103/PhysRevC.39.295
Citations: PlumX Metrics


1989ST03      Phys.Lett. 219B, 237 (1989)

S.Stanislaus, D.S.Armstrong, D.F.Measday, P.Weber, M.Harston

Search for T = 2 Dibaryons via π-d → γX

NUCLEAR REACTIONS 2H(π-, X), E at rest; measured γ-yields; deduced no T=2 dibaryon evidence.

ATOMIC PHYSICS, Mesic-Atoms 2H(π-, X), E at rest; measured γ-yields; deduced π-d mesic atom transition branching ratio limit.

doi: 10.1016/0370-2693(89)90384-5
Citations: PlumX Metrics


1985AR14      Nucl.Phys. A441, 397 (1985)

D.S.Armstrong, S.K.Saha, C.-W.Cheng, E.Adamides, A.Henrikson, M.A.Lone, B.C.Robertson

Gamma-Ray Strength Function of 198Hg

NUCLEAR REACTIONS, ICPND 197Au(p, γ), E=4 MeV; measured σ(Eγ); deduced γ-production σ. 198Hg deduced E1 γ-strength function. Natural target.

doi: 10.1016/0375-9474(85)90152-6
Citations: PlumX Metrics

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