NSR Query Results
Output year order : Descending NSR database version of April 26, 2024. Search: Author = G.Hofman Found 25 matches. 2006DE08 Phys.Lett. B 633, 209 (2006) H.Denz, P.Amaudruz, J.T.Brack, J.Breitschopf, P.Camerini, J.L.Clark, H.Clement, L.Felawka, E.Fragiacomo, E.F.Gibson, N.Grion, G.J.Hofman, B.Jamieson, E.L.Mathie, R.Meier, G.Moloney, D.Ottewell, O.Patarakin, J.D.Patterson M.M.Pavan, S.Piano, K.Raywood, R.a.Ristinen, R.Rui, M.E.Sevior, G.R.Smith, J.Stahov, R.Tacik, G.J.Wagner, F.von Wrochem, D.M.Yeomans π±p differential cross sections at low energies NUCLEAR REACTIONS 1H(π+, π+), (π-, π-), E=19.9-43.3 MeV; measured σ(E, θ); deduced isospin scattering amplitude. CHAOS spectrometer.
doi: 10.1016/j.physletb.2005.12.017
2005FR28 Phys.Rev. C 72, 034609 (2005) E.Friedman, M.Bauer, J.Breitschopf, H.Clement, H.Denz, E.Doroshkevich, A.Erhardt, G.J.Hofman, S.Kritchman, R.Meier, G.J.Wagner, G.Yaari Elastic scattering of low energy pions by nuclei and the in-medium isovector πN amplitude NUCLEAR REACTIONS Si, Ca, Ni, Zr(π+, π+), (π-, π-), E=21.5 MeV; measured σ(θ); deduced optical potential parameters, in-medium isovector amplitude, related features.
doi: 10.1103/PhysRevC.72.034609
2005GR28 Nucl.Phys. A763, 80 (2005) N.Grion, M.Bregant, P.Camerini, E.Fragiacomo, S.Piano, R.Rui, E.F.Gibson, G.Hofman, E.L.Mathie, R.Meier, M.E.Sevior, G.R.Smith, R.Tacik, for the CHAOS Collaboration The π → ππ process in nuclei and the restoration of chiral symmetry NUCLEAR REACTIONS 1H(π-, π+π-), (π+, 2π+), E=243, 264, 284, 305 MeV; 2H, 12C, 40Ca, 208Pb(π+, 2π+), (π+, π+π-), E=283 MeV; Sc(π+, 2π+X), (π+, π+π-X), E=243, 264, 284, 305 MeV; measured invariant mass distributions, σ(θ), correlations; deduced partial chiral symmetry restoration.
doi: 10.1016/j.nuclphysa.2005.08.017
2004CA08 Nucl.Phys. A735, 89 (2004) P.Camerini, E.Fragiacomo, N.Grion, S.Piano, R.Rui, J.Clark, L.Felawka, E.F.Gibson, G.Hofman, E.L.Mathie, R.Meier, G.Moloney, D.Ottewell, K.Raywood, M.E.Sevior, G.R.Smith, R.Tacik, and the CHAOS Collaboration General properties of the pion production reaction in nuclear matter NUCLEAR REACTIONS 45Sc(π+, π+π-), (π+, π+π-p), (π+, 2π+), (π+, 2π+p), E=240-320 MeV; measured σ(E, θ), invariant mass, total σ; deduced reaction mechanism features. Comparison with previous results and model predictions.
doi: 10.1016/j.nuclphysa.2004.01.122
2004FR28 Phys.Rev.Lett. 93, 122302 (2004) E.Friedman, M.Bauer, J.Breitschopf, H.Clement, H.Denz, E.Doroshkevich, A.Erhardt, G.J.Hofman, R.Meier, G.J.Wagner, G.Yaari In-Medium Isovector πN Amplitude from Low-Energy Pion Scattering NUCLEAR REACTIONS Si, Ca, Ni, Zr(π+, π+), (π-, π-), E=21.5 MeV; measured σ(θ); deduced in-medium amplitudes.
doi: 10.1103/PhysRevLett.93.122302
2004ME07 Phys.Lett. B 588, 155 (2004) R.Meier, M.Croni, R.Bilger, B.van den Brandt, J.Breitschopf, H.Clement, J.R.Comfort, H.Denz, A.Erhardt, K.Fohl, E.Friedman, J.Grater, P.Hautle, G.J.Hofman, J.A.Konter, S.Mango, J.Patzold, M.M.Pavan, G.J.Wagner, F.von Wrochem Low energy analyzing powers in pion-proton elastic scattering NUCLEAR REACTIONS 1H(π+, π+), E=45.2, 51.2, 57.2, 68.5, 77.2, 87.2 MeV; 1H(π-, π-), E=67.3, 87.2 MeV; measured Ay(θ). Polarized target. Comparison with model predictions.
doi: 10.1016/j.physletb.2004.02.071
2003HO12 Phys.Rev. C 68, 018202 (2003) G.J.Hofman, J.Breitschopf, K.Craig, H.Denz, E.F.Gibson, E.L.Mathie, R.Meier, M.M.Pavan, C.M.Riedel, R.Tacik, G.J.Wagner Analyzing powers for π-p elastic scattering at 279 MeV NUCLEAR REACTIONS 1H(π-, π-), E=279 MeV; measured Ay(θ). Polarized target, comparison with model predictions.
doi: 10.1103/PhysRevC.68.018202
2002CL04 Phys.Rev. C 66, 054606 (2002) J.L.Clark, M.E.Sevior, H.Clement, J.Grater, R.Meier, G.J.Wagner, P.-A.Amaudruz, L.Felawka, G.J.Hofman, D.Ottewell, G.R.Smith, A.Ambardar, M.Kermani, G.Tagliente, P.Camerini, E.Fragiacomo, N.Grion, R.Rui, E.L.Mathie, R.Tacik, D.M.Yeomans, E.F.Gibson, J.T.Brack, M.Schepkin Semiexclusive pionic double charge exchange on 4He NUCLEAR REACTIONS 4He(π+, π-2p), E=105, 115 MeV; measured invariant mass spectra; deduced sequential single charge exchange, no dibaryon resonance.
doi: 10.1103/PhysRevC.66.054606
2002GA02 Phys.Rev. C65, 011001 (2002) D.Gaskell, A.Ahmidouch, P.Ambrozewicz, H.Anklin, J.Arrington, K.Assamagan, S.Avery, K.Bailey, O.K.Baker, S.Beedoe, B.Beise, H.Breuer, D.S.Brown, R.Carlini, J.Cha, N.Chant, A.Cowley, S.Danagoulian, D.De Schepper, J.Dunne, D.Dutta, R.Ent, L.Gan, A.Gasparian, D.F.Geesaman, R.Gilman, C.Glashausser, P.Gueye, M.Harvey, O.Hashimoto, W.Hinton, G.Hofman, C.Jackson, H.E.Jackson, C.Keppel, E.Kinney, D.Koltenuk, A.Lung, D.Mack, D.McKee, J.Mitchell, H.Mkrtchyan, B.Mueller, G.Niculescu, I.Niculescu, T.G.O'Neill, V.Papavassiliou, D.Potterveld, J.Reinhold, P.Roos, R.Sawafta, R.Segel, S.Stepanyan, V.Tadevosyan, T.Takahashi, L.Tang, B.Terburg, D.Van Westrum, J.Volmer, T.P.Welch, S.Wood, L.Yuan, B.Zeidman, B.Zihlmann Measurement of Longitudinal and Transverse Cross Sections in the 3He(e, e'π+)3H Reaction at W = 1.6 GeV NUCLEAR REACTIONS 1H, 3H(e, e'π+), E=1.645, 3.245 GeV; measured missing mass, longitudinal and transverse σ(θ).
doi: 10.1103/PhysRevC.65.011001
2002PA41 Phys.Rev. C66, 025207 (2002) J.D.Patterson, G.J.Hofman, J.T.Brack, P.Camerini, J.Clark, P.P.J.Delheij, L.Felawka, E.Fragiacomo, E.F.Gibson, N.Grion, B.Jamieson, E.L.Mathie, R.Meier, D.Ottewell, R.J.Peterson, K.Raywood, R.A.Ristinen, R.Rui, M.E.Sevior, G.R.Smith, R.Tacik, G.Tagliente, G.J.Wagner, D.M.Yeomans Analyzing powers for πp elastic scattering between 57 and 139 MeV NUCLEAR REACTIONS 1H(π-, π-), E=57-139 MeV; 1H(π+, π+), E=139 MeV; measured Ay(θ). Polarized target, comparison with previous results and model predictions.
doi: 10.1103/PhysRevC.66.025207
2001AM01 Nucl.Phys. A684, 386c (2001) A.Ambardar, F.Duncan, A.Feltham, G.Hofman, R.R.Johnson, G.Jones, J.B.Lange, M.Pavan, K.J.Raywood, D.Vetterli, J.T.Brack, D.Ottewell, G.R.Smith, M.E.Sevior Measurement of π p → ππ n Cross-Sections Near Threshold NUCLEAR REACTIONS 1H(π-, π+π-), (π+, 2π+), E=176-200 MeV; measured σ; deduced reaction matrix elements, scattering lengths.
doi: 10.1016/S0375-9474(01)00403-1
2001CA53 Phys.Rev. C64, 067601 (2001) P.Camerini, E.Fragiacomo, N.Grion, R.Rui, J.T.Brack, E.F.Gibson, G.J.Hofman, E.L.Mathie, R.Meier, K.Raywood, M.E.Sevior, G.R.Smith, R.Tacik π→ππ Results in Nuclei NUCLEAR REACTIONS 1,2H, C, 27Al, Cu(π-, 2π0), E at 408 MeV/c; 2H, 12C, 40Ca, 208Pb(π+, π+π-), (π+, 2π+), E at 399 MeV/c; analyzed invariant mass distributions. Similarities between different data sets discussed.
doi: 10.1103/PhysRevC.64.067601
2001GA63 Phys.Rev.Lett. 87, 202301 (2001) D.Gaskell, A.Ahmidouch, P.Ambrozewicz, H.Anklin, J.Arrington, K.Assamagan, S.Avery, K.Bailey, O.K.Baker, S.Beedoe, B.Beise, H.Breuer, D.S.Brown, R.Carlini, J.Cha, N.Chant, A.Cowley, S.Danagoulian, D.De Schepper, J.Dunne, D.Dutta, R.Ent, L.Gan, A.Gasparian, D.F.Geesaman, R.Gilman, C.Glashausser, P.Gueye, M.Harvey, O.Hashimoto, W.Hinton, G.Hofman, C.Jackson, H.E.Jackson, C.Keppel, E.Kinney, D.Koltenuk, G.Kyle, A.Lung, D.Mack, D.McKee, J.Mitchell, H.Mkrtchyan, B.Mueller, G.Niculescu, I.Niculescu, T.G.O'Neill, V.Papavassiliou, D.Potterveld, J.Reinhold, P.Roos, R.Sawafta, R.Segel, S.Stepanyan, V.Tadevosyan, T.Takahashi, L.Tang, B.Terburg, D.Van Westrum, J.Volmer, T.P.Welch, S.Wood, L.Yuan, B.Zeidman, B.Zihlmann Longitudinal Electroproduction of Charged Pions from 1H, 2H, and 3He NUCLEAR REACTIONS 1,2H, 3He(e, e'π+X), (e, e'π-X), E=0.845-3.245 GeV; measured pion production missing mass spectra, σ(E, θ), longitudinal and transverse σ.
doi: 10.1103/PhysRevLett.87.202301
2000BO38 Nucl.Phys. A677, 213 (2000) F.Bonutti, P.Camerini, E.Fragiacomo, N.Grion, R.Rui, J.T.Brack, L.Felawka, E.F.Gibson, G.Hofman, M.Kermani, E.L.Mathie, R.Meier, D.Ottewell, K.Raywood, M.E.Sevior, G.R.Smith, R.Tacik, and the CHAOS Collaboration The ππ Interaction in Nuclear Matter from a Study of the π+A → π+π± A' Reactions NUCLEAR REACTIONS 2H, 12C, 40Ca, 208Pb(π+, π+π-), (π+, 2π+), E=283 MeV; measured two-pion invariant mass spectra, σ(θ); deduced medium modification effects.
doi: 10.1016/S0375-9474(00)00286-4
2000LA03 Phys.Rev. C61, 025201 (2000) J.B.Lange, A.Ambardar, F.Duncan, A.Feltham, G.Hofman, R.R.Johnson, G.Jones, M.Pavan, K.J.Raywood, D.Vetterli, J.T.Brack, D.Ottewell, G.R.Smith, M.E.Sevior Determination of the π±p → π±π+n Cross Section Near Threshold NUCLEAR REACTIONS 1H(π-, π+π-), E=176-200 MeV; 1H(π+, 2π+), E=184, 200 MeV; measured total σ; deduced reaction matrix elements, scattering lengths. Heavy baryon chiral perturbation theory. Comparisons with previous results.
doi: 10.1103/PhysRevC.61.025201
1999BO25 Phys.Rev. C60, 018201 (1999) F.Bonutti, P.Camerini, E.Fragiacomo, N.Grion, R.Rui, J.T.Brack, L.Felawka, E.F.Gibson, G.Hofman, M.Kermani, E.L.Mathie, S.McFarland, R.Meier, K.Raywood, D.Ottewell, M.E.Sevior, G.R.Smith, R.Tacik, and the CHAOS Collaboration ππ Pairs in Nuclei and the σ Meson NUCLEAR REACTIONS 2H, 12C, 16O, 40Ca, 208Pb(π+, π+π-), (π+, 2π+), E=283 MeV; measured σ; deduced in-medium correlation effects.
doi: 10.1103/PhysRevC.60.018201
1999GR01 Eur.Phys.J. A 4, 5 (1999) J.Grater, P.A.Amaudruz, R.Bilger, P.Camerini, J.Clark, H.Clement, E.Friedman, L.Felawka, S.N.Filippov, E.Friagiacomo, Yu.K.Gavrilov, E.Gibson, N.Grion, G.J.Hofman, B.Jamieson, T.L.Karavicheva, M.Kermani, E.L.Mathie, R.Meier, G.Moloney, D.Ottewell, J.Patzold, O.Patarakin, K.Raywood, R.Rui, M.Schepkin, M.E.Sevior, G.R.Smith, H.Staudenmaier, R.Tacik, G.Tagliente, G.J.Wagner, M.Yeomans Search for a Bound Trineutron with the 3He(π-π+)nnn Reaction NUCLEAR REACTIONS 3He(π-, π+), E=65, 75, 120 MeV; measured three-neutron system invariant mass spectra; deduced no trineutron bound state or unbound resonance.
doi: 10.1007/s100500050196
1998HO21 Phys.Rev. C58, 3484 (1998) G.J.Hofman, G.R.Smith, T.Ambardar, F.Bonutti, J.T.Brack, P.Camerini, J.Clark, P.P.J.Delheij, F.Farzanpay, L.Felawka, E.Fragiacomo, E.F.Gibson, J.Graeter, N.Grion, M.Kermani, E.L.Mathie, R.Meier, D.Ottewell, R.J.Peterson, R.A.Ristinen, R.Rui, M.E.Sevior, H.Staudenmaier, R.Tacik, G.J.Wagner Analyzing Powers for π±p(pol) Elastic Scattering between 87 and 263 MeV NUCLEAR REACTIONS 1H(π+, π+), (π-, π-), E=87-267 MeV; measured Ay(θ); deduced phase shift analysis parameters. Polarized target.
doi: 10.1103/PhysRevC.58.3484
1998KE06 Phys.Rev. C58, 3419 (1998) M.Kermani, P.A.Amaudruz, F.Bonutti, J.T.Brack, P.Camerini, L.Felawka, E.Fragiacomo, E.F.Gibson, N.Grion, G.J.Hofman, R.R.Johnson, E.L.Mathie, S.McFarland, R.Meier, D.Ottewell, K.J.Raywood, R.Rui, M.E.Sevior, G.R.Smith, R.Tacik, and the CHAOS Collaboration Exclusive Measurements of π±p → π+π±n Near Threshold NUCLEAR REACTIONS 1H(π-, π-π+), (π+, 2π+), E=223, 243, 264, 284, 305 MeV; measured σ(θ(1)-θ(2)), σ(m2), σ(t), total σ; deduced model parameters.
doi: 10.1103/PhysRevC.58.3419
1998KE07 Phys.Rev. C58, 3431 (1998) M.Kermani, O.Patarakin, G.R.Smith, P.A.Amaudruz, F.Bonutti, J.T.Brack, P.Camerini, L.Felawka, E.Fragiacomo, E.F.Gibson, N.Grion, G.J.Hofman, E.L.Mathie, S.McFarland, R.Meier, D.Ottewell, K.J.Raywood, R.Rui, M.E.Sevior, R.Tacik, V.Mayorov, V.Tikhonov, and the CHAOS Collaboration ππ → ππ Cross Sections Near Threshold NUCLEAR REACTIONS 1H(π-, π-π+), (π+, 2π+), E=223, 243, 264, 284 MeV; analyzed data; deduced pion-pion cross sections, scattering length.
doi: 10.1103/PhysRevC.58.3431
1998LA01 Phys.Rev.Lett. 80, 1597 (1998) J.B.Lange, F.Duncan, A.Ambardar, A.Feltham, G.Hofman, R.R.Johnson, G.Jones, M.Pavan, K.J.Raywood, D.Vetterli, J.T.Brack, D.Ottewell, G.R.Smith, M.E.Sevior Determination of the π± p → π±π+n Cross Section Near Threshold NUCLEAR REACTIONS 1H(π-, nπ+π-), (π+, n2π+), E = 180-200 MeV; measured σ; deduced matrix elements, pion-pion scattering lengths.
doi: 10.1103/PhysRevLett.80.1597
1998TA02 Phys.Rev. C57, 1295 (1998) R.Tacik, F.Farzanpay, E.L.Mathie, P.Amaudruz, J.T.Brack, L.Felawka, R.Meier, D.Ottewell, G.R.Smith, G.Hofman, M.Kermani, S.McFarland, K.Raywood, M.Sevior, F.Bonutti, P.Camerini, N.Grion, R.Rui, E.F.Gibson Pion Absorption in 12C NUCLEAR REACTIONS 12C(π+, 2p), (π+, 3p), E=200, 240, 280 MeV; measured protons σ(E, θ); deduced reaction mechanism.
doi: 10.1103/PhysRevC.57.1295
1997BO15 Phys.Rev. C55, 2998 (1997) F.Bonutti, P.Camerini, E.Fragiacomo, N.Grion, R.Rui, J.T.Brack, L.Felawka, E.F.Gibson, G.Hofman, M.Kermani, E.L.Mathie, S.McFarland, R.Meier, D.Ottewell, K.Raywood, M.E.Sevior, G.R.Smith, R.Tacik, and the CHAOS Collaboration Pion-Induced Pion Production in Nuclei NUCLEAR REACTIONS 2H, 12C, 40Ca, 208Pb(π+, π+π-), (π+, π+π-p), E at 283 MeV/c; measured missing mass, energy distributions; deduced pion production mechanism.
doi: 10.1103/PhysRevC.55.2998
1996BO09 Phys.Rev.Lett. 77, 603 (1996) F.Bonutti, P.Camerini, E.Fragiacomo, N.Grion, R.Rui, P.A.Amaudruz, J.T.Brack, L.Felawka, E.F.Gibson, G.J.Hofman, M.Kermani, E.L.Mathie, S.McFarland, R.Meier, D.Ottewell, K.Raywood, M.E.Sevior, G.R.Smith, R.Tacik, and the CHAOS Collaboration A Dependence of the (π+, π+π±) Reaction Near the 2m(π) Threshold NUCLEAR REACTIONS 2H, 12C, 40Ca, 208Pb(π+, 2π+), (π+, π+π-), E=282.7 MeV; measured double-pion invariant mass distribution; deduced ππ-interaction matter modification.
doi: 10.1103/PhysRevLett.77.603
1996SA08 Phys.Rev. C53, 1745 (1996) A.Saunders, S.Hoibraten, J.J.Kraushaar, B.J.Kriss, R.J.Peterson, R.A.Ristinen, J.T.Brack, G.Hofman, E.F.Gibson, C.L.Morris Reaction and Total Cross Sections for Low Energy π+ and π- on Isospin Zero Nuclei NUCLEAR REACTIONS 2H, 6Li, C, 27Al, Si, S, Ca(π+, X), (π-, X), E=42-65 MeV; measured total, reaction σ. Model comparisons.
doi: 10.1103/PhysRevC.53.1745
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