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NSR database version of April 11, 2024.

Search: Author = G.Hofman

Found 25 matches.

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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
Citations: PlumX Metrics


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
Citations: PlumX Metrics


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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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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Note: The following list of authors and aliases matches the search parameter G.Hofman: , G.H.HOFMAN, G.J.HOFMAN