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NSR database version of May 24, 2024.

Search: Author = J.A.McGovern

Found 28 matches.

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2022LI18      Phys.Rev.Lett. 128, 132502 (2022)

X.Li, M.W.Ahmed, A.Banu, C.Bartram, B.Crowe, E.J.Downie, M.Emamian, G.Feldman, H.Gao, D.Godagama, H.W.Griesshammer, C.R.Howell, H.J.Karwowski, D.P.Kendellen, M.A.Kovash, K.K.H.Leung, D.M.Markoff, J.A.McGovern, S.Mikhailov, R.E.Pywell, M.H.Sikora, J.A.Silano, R.S.Sosa, M.C.Spraker, G.Swift, P.Wallace, H.R.Weller, C.S.Whisnant, Y.K.Wu, Z.W.Zhao

Proton Compton Scattering from Linearly Polarized Gamma Rays

NUCLEAR REACTIONS 1H(polarized γ, γ'), E=83.4 MeV; measured reaction products, Eγ, Iγ; deduced σ(θ), electromagnetic dipole polarizabilities of the proton. The High Intensity Gamma-Ray Source facility at the Triangle Universities Nuclear Laboratory.

doi: 10.1103/PhysRevLett.128.132502
Citations: PlumX Metrics


2021ME07      Eur.Phys.J. A 57, 81 (2021)

J.A.Melendez, R.J.Furnstahl, H.W.Griesshammer, J.A.McGovern, D.R.Phillips, M.T.Pratola

Designing optimal experiments: an application to proton Compton scattering

doi: 10.1140/epja/s10050-021-00382-2
Citations: PlumX Metrics


2020GR16      Few-Body Systems 61, 48 (2020)

H.W.Griesshammer, J.A.McGovern, A.Nogga, D.R.Phillips

Scattering Observables from One- and Two-body Densities: Formalism and Application to γ 3He Scattering

doi: 10.1007/s00601-020-01578-w
Citations: PlumX Metrics


2018GR05      Eur.Phys.J. A 54, 37 (2018)

H.W.Griesshammer, J.A.McGovern, D.R.Phillips

Comprehensive study of observables in Compton scattering on the nucleon

NUCLEAR REACTIONS 1H(γ, γ'), E=0-E(Δ(1232)); calculated, analyzed σ, asymmetry, polarized beams or targets using ChEFT (Chiral Effective Field Theory) (complete at N4LO at photon energies close to pion mass, in the resonance region complete at NLO); deduced asymmetry sensitivity to ill-determined combinations of proton spin polarizabilities.

doi: 10.1140/epja/i2018-12467-8
Citations: PlumX Metrics


2018MA42      Eur.Phys.J. A 54, 125 (2018)

A.Margaryan, B.Strandberg, H.W.Griesshammer, J.A.McGovern, D.R.Phillips, D.Shukla

Elastic Compton scattering from 3He and the role of the Delta

NUCLEAR REACTIONS 3He(γ, γ), E=50-120 MeV; calculated elastic Compton scattering σ, σ(θ), beam asymmetry, double asymmetry resulting from circularly polarized photons and longitudinally or transversely polarized target using Chiral Effective Field Theory with explicit Δ(1232) degree of freedom; deduced corrections to N2LO results (without explicit Δ). Compared observables for p, n and d targets.

doi: 10.1140/epja/i2018-12554-x
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2016GR05      Eur.Phys.J. A 52, 139 (2016)

H.W.Griesshammer, J.A.McGovern, D.R.Phillips

Nucleon polarisabilities at and beyond physical pion masses

NUCLEAR STRUCTURE 1n, 1H; calculated nucleon polarizability vs pion mass using chiral effective field theory.

doi: 10.1140/epja/i2016-16139-5
Citations: PlumX Metrics


2014LE06      Phys.Rev. C 89, 032202 (2014)

V.Lensky, J.McGovern

Proton polarizabilities from Compton data using covariant chiral effective field theory

NUCLEAR REACTIONS 1H(γ, γ), E<200 MeV; calculated σ(E) for Compton scattering using covariant baryon chiral effective field theory; deduced chiral parameters, spin-independent electromagnetic polarizabilities of the proton. Comparison with experimental data.

doi: 10.1103/PhysRevC.89.032202
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2014MY06      Phys.Rev.Lett. 113, 262506 (2014)

L.S.Myers, J.R.M.Annand, J.Brudvik, G.Feldman, K.G.Fissum, H.W.Griesshammer, K.Hansen, S.S.Henshaw, L.Isaksson, R.Jebali, M.A.Kovash, M.Lundin, J.A.McGovern, D.G.Middleton, A.M.Nathan, D.R.Phillips, B.Schroder, S.C.Stave, for the COMPTON @ MAX-lab Collaboration

Measurement of Compton Scattering from the Deuteron and an Improved Extraction of the Neutron Electromagnetic Polarizabilities

NUCLEAR REACTIONS 2H(γ, γ), (γ, E), E=65-115 MeV; measured reaction products, Eγ, Iγ; deduced the isoscalar polarizabilities and reduced the statistical uncertainty on these quantities. Comparison with available data.

doi: 10.1103/PhysRevLett.113.262506
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetG0045.


2013MC02      Eur.Phys.J. A 49, 12 (2013)

J.A.McGovern, D.R.Phillips, H.W.Griesshammer

Compton scattering from the proton in an effective field theory with explicit Delta degrees of freedom

doi: 10.1140/epja/i2013-13012-1
Citations: PlumX Metrics


2012BI09      Eur.Phys.J. A 48, 120 (2012)

M.C.Birse, J.A.McGovern

Proton polarisability contribution to the Lamb shift in muonic hydrogen at fourth order in chiral perturbation theory

ATOMIC PHYSICS 1H; calculated polarizability, form factor, Lamb shift using heavy-baryon chiral perturbation theory.

doi: 10.1140/epja/i2012-12120-8
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2012LE14      Phys.Rev. C 86, 048201 (2012)

V.Lensky, J.A.McGovern, D.R.Phillips, V.Pascalutsa

Proton Compton scattering cross section in different variants of chiral effective field theory

doi: 10.1103/PhysRevC.86.048201
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2006MC06      Phys.Rev. D 74, 097501 (2006)

J.A.McGovern, M.C.Birse

Convergence of the chiral expansion for the nucleon mass

doi: 10.1103/PhysRevD.74.097501
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2005BE08      Nucl.Phys. A747, 311 (2005)

S.R.Beane, M.Malheiro, J.A.McGovern, D.R.Phillips, U.van Kolck

Compton scattering on the proton, neutron, and deuteron in chiral perturbation theory to O(Q4)

NUCLEAR REACTIONS 1n, 1,2H(γ, γ'), E ≈ 40-200 MeV; calculated σ(θ). Chiral perturbation theory, comparison with data.

doi: 10.1016/j.nuclphysa.2004.09.068
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2005BI01      Phys.Lett. B 605, 287 (2005)

M.C.Birse, B.Krippa, J.A.McGovern, N.R.Walet

Pairing in many-fermion systems: an exact renormalisation group treatment

doi: 10.1016/j.physletb.2004.11.044
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2005KR02      Nucl.Phys. A749, 134c (2005)

B.Krippa, M.C.Birse, N.R.Walet, J.A.McGovern

Exact Renormalisation Group and pairing in many-fermion systems

doi: 10.1016/j.nuclphysa.2004.12.022
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2004BI14      Phys.Rev. C 70, 054002 (2004)

M.C.Birse, J.A.McGovern

Effectiveness of effective field theory in peripheral nucleon-nucleon scattering

NUCLEAR REACTIONS 1H(n, n), E ≈ 20-300 MeV; calculated short-range potentials, phase shifts, one-pion and two-pion exchange contributions. Effective field theory.

doi: 10.1103/PhysRevC.70.054002
Citations: PlumX Metrics


2003BE40      Phys.Lett. B 567, 200 (2003); Erratum Phy.Lett. B 607, 320 (2005)

S.R.Beane, M.Malheiro, J.A.McGovern, D.R.Phillips, U.van Kolck

Nucleon polarizabilities from low-energy Compton scattering

NUCLEAR REACTIONS 1,2H(γ, γ), E ≈ 40-200 MeV; analyzed σ(θ). 1n, 1H deduced polarizabilities.

doi: 10.1016/j.physletb.2003.06.040
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2003KR04      Phys.Rev. C 67, 031301 (2003)

B.Krippa, M.C.Birse, J.A.McGovern, N.R.Walet

Off-shell effects and consistency of many-body treatments of dense matter

doi: 10.1103/PhysRevC.67.031301
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2002AM10      Acta Phys.Hung.N.S. 16, 163 (2002)

P.Amore, M.C.Birse, J.A.McGovern, N.R.Walet

Colour Superconductivity in Finite Systems

doi: 10.1556/APH.16.2002.1-4.18
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2001MC02      Phys.Rev. C63, 064608 (2001); Erratum Phys.Rev. C66, 039902 (2002)

J.A.McGovern

Compton Scattering from the Proton at Fourth Order in the Chiral Expansion

NUCLEAR REACTIONS 1H(γ, γ'), E < 200 MeV; calculated σ(E, θ). Heavy baryon chiral perturbation theory, fourth-order expansion. Comparisons with data.

doi: 10.1103/PhysRevC.63.064608
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2000KU10      Phys.Lett. 479B, 167 (2000)

K.B.V.Kumar, J.A.McGovern, M.C.Birse

Spin Polarisabilities of the Nucleon at NLO in the Chiral Expansion

doi: 10.1016/S0370-2693(00)00340-3
Citations: PlumX Metrics


2000PE15      Phys.Rev. C61, 055209 (2000)

S.Pepin, M.C.Birse, J.A.McGovern, N.R.Walet

Nucleons or Diquarks: Competition between clustering and color superconductivity in quark matter

doi: 10.1103/PhysRevC.61.055209
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1999BI24      Phys.Lett. 464B, 169 (1999)

M.C.Birse, J.A.McGovern, K.G.Richardson

A Renormalisation-Group Treatment of Two-Body Scattering

doi: 10.1016/S0370-2693(99)00991-0
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1998WE08      Phys.Rev. C57, 3376 (1998)

U.Weber, J.A.McGovern

Self-Consistent Approach to the Wigner-Seitz Treatment of Soliton Matter

doi: 10.1103/PhysRevC.57.3376
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1996BA12      J.Phys.(London) G22, 199 (1996)

M.-S.Bae, J.A.McGovern

Magnetic Moments of the Octet Baryons in the Colour-Dielectric Model

NUCLEAR STRUCTURE 1H, 1n; calculated scaled μ. Color dielectric model with pion, kaon loops, other baryons studied.

doi: 10.1088/0954-3899/22/2/005
Citations: PlumX Metrics


1992MC04      Phys.Rev. D45, 2437 (1992)

J.A.McGovern, M.C.Birse

Neutron Electron Dipole Moment in Chiral Quark-Meson Models

NUCLEAR MOMENTS 1n; calculated electric dipole moment. Chiral quark-meson models.

doi: 10.1103/PhysRevD.45.2437
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1991MC06      Nucl.Phys. A533, 553 (1991)

J.A.McGovern

Proton-Neutron Mass Splitting in the Colour-Dielectric Model

NUCLEAR STRUCTURE 1n, 1H; calculated mass difference. Colour-dielectric model.

doi: 10.1016/0375-9474(91)90533-C
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1990MC01      Nucl.Phys. A506, 367 (1990)

J.A.McGovern, M.C.Birse

Strange Baryons in a Chiral Quark-Meson Model (I). SU(3)-Symmetric Model

NUCLEAR STRUCTURE 1H, 1n; calculated μ. SU(3) symmetric model.

doi: 10.1016/0375-9474(90)90194-Q
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Note: The following list of authors and aliases matches the search parameter J.A.McGovern: , J.A.MCGOVERN