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NSR database version of April 11, 2024.

Search: Author = A.Gardestig

Found 15 matches.

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2007GA32      Phys.Rev. C 76, 014005 (2007)

A.Gardestig, K.Kubodera, F.Myhrer

Comparison of the heavy-fermion and Foldy-Wouthuysen formalisms at third order

doi: 10.1103/PhysRevC.76.014005
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2006GA01      Phys.Rev. C 73, 014002 (2006)

A.Gardestig, D.R.Phillips

Using chiral perturbation theory to extract the neutron-neutron scattering length from π-d → nnγ

NUCLEAR REACTIONS 2H(π-, nγ), E at rest; calculated neutron spectra, dependence on neutron-neutron scattering length. Chiral perturbation theory, theoretical uncertainties discussed.

doi: 10.1103/PhysRevC.73.014002
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2006GA08      Phys.Rev. C 73, 024002 (2006)

A.Gardestig, D.R.Phillips, Ch.Elster

Near-threshold NN → dπ reaction in chiral perturbation theory

NUCLEAR REACTIONS 1H(n, π0), E ≈ threshold; calculated σ. Chiral perturbation theory.

doi: 10.1103/PhysRevC.73.024002
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2006GA20      Phys.Rev.Lett. 96, 232301 (2006)

A.Gardestig, D.R.Phillips

How Low-Energy Weak Reactions Can Constrain Three-Nucleon Forces and the Neutron-Neutron Scattering Length

NUCLEAR REACTIONS 2H(π-, 2n), E not given; calculated Gamow-Teller matrix elements, neutron spectra; deduced neutron-neutron scattering length.

doi: 10.1103/PhysRevLett.96.232301
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2006GA22      Phys.Rev. C 74, 017001 (2006)

A.Gardestig

Chiral O(Q4) two-body operators for s-wave pion photoproduction on the NN system

doi: 10.1103/PhysRevC.74.017001
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2006NO08      Phys.Lett. B 639, 465 (2006)

A.Nogga, A.C.Fonseca, A.Gardestig, C.Hanhart, C.J.Horowitz, G.A.Miller, J.A.Niskanen, U.van Kolck

Realistic few-body physics in the dd → απ0

NUCLEAR REACTIONS 2H(d, π0), E=293 MeV; calculated σ, related matrix elements. Effective field theory with four-body theory.

doi: 10.1016/j.physletb.2006.04.058
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2004GA22      Phys.Rev. C 69, 044606 (2004)

A.Gardestig, C.J.Horowitz, A.Nogga, A.C.Fonseca, C.Hanhart, G.A.Miller, J.A.Niskanen, U.van Kolck

Survey of charge symmetry breaking operators for dd → απ0

NUCLEAR REACTIONS 2H(d, π0), E=228.5, 231.8 MeV; calculated pion production total σ, charge symmetry breaking amplitudes; deduced reaction mechanism features. Effective field theory approach.

doi: 10.1103/PhysRevC.69.044606
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2003ST16      Phys.Rev.Lett. 91, 142302 (2003)

E.J.Stephenson, A.D.Bacher, C.E.Allgower, A.Gardestig, C.M.Lavelle, G.A.Miller, H.Nann, J.Olmsted, P.V.Pancella, M.A.Pickar, J.Rapaport, T.Rinckel, A.Smith, H.M.Spinka, U.van Kolck

Observation of the Charge Symmetry Breaking d + d → 4He + π0 Reaction Near Threshold

NUCLEAR REACTIONS 2H(d, π0), (d, 2γ), E=228.5, 231.8 MeV; measured missing mass spectra, pion production total σ; deduced charge symmetry breaking features.

doi: 10.1103/PhysRevLett.91.142302
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2000FA22      Phys.Lett. 496B, 185 (2000)

G.Faldt, A.Gardestig, C.Wilkin

Production of Isoscalar Pion Pairs in the pd → 3Heππ Reaction Near Threshold

NUCLEAR REACTIONS 2H(p, 2π0), (p, π+π-), E=477, 546 MeV; calculated σ, effective mass distributions. Two-step model, virtual pion beam.

doi: 10.1016/S0370-2693(00)01296-X
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2000GA17      Phys.Lett. 479B, 144 (2000)

A.Gardestig

Multi-Pion Production in the dd → αX Reaction

NUCLEAR REACTIONS 2H(d, αX), E=1.9, 2.2, 2.4 GeV; calculated four-pion missing mass distributions; deduced reaction mechanism features. Comparison with data.

doi: 10.1016/S0370-2693(00)00326-9
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1999DO33      Phys.Rev.Lett. 83, 5246 (1999)

D.Dobrokhotov, G.Faldt, A.Gardestig, C.Wilkin

Has Charge Symmetry Breaking Been Observed in the dd → απ0 Reaction ?

NUCLEAR REACTIONS 2H(d, γ), (d, π0), E=1100 MeV; calculated missing mass distributions, σ(θ); deduced possible background effect in charge symmetry breaking measurements.

doi: 10.1103/PhysRevLett.83.5246
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1999GA17      Phys.Rev. C59, 2608 (1999)

A.Gardestig, G.Faldt, C.Wilkin

Structure in Two-Pion Production in the dd → αX Reaction

NUCLEAR REACTIONS 2H(polarized d, αX), E=0.8-1.9 GeV; calculated σ(Eα, θ), analyzing powers, two-pion production features. Semiclassical approach, paired NN reactions.

doi: 10.1103/PhysRevC.59.2608
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1999WU02      Phys.Lett. 445B, 423 (1999)

R.Wurzinger, O.Bing, M.Boivin, P.Courtat, G.Faldt, R.Gacougnolle, A.Gardestig, F.Hibou, Y.Le Bornec, J.M.Martin, F.Plouin, B.Tatischeff, C.Wilkin, N.Willis, J.Yonnet, A.Zghiche

Study of the ABC Enhancement in the dd → αX0 Reaction

NUCLEAR REACTIONS 2H(polarized d, αX), E=1116.7-1127 MeV; measured missing mass spectra, analyzing powers vs alpha momentum; deduced two-pion production features.

doi: 10.1016/S0370-2693(98)01464-6
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1998GA10      Phys.Lett. 421B, 41 (1998)

A.Gardestig, G.Faldt, C.Wilkin

An Explanation of the ABC Enhancement in the dd → αX Reaction at Intermediate Energies

NUCLEAR REACTIONS 2H(d, αX), E=1250 MeV; calculated σ(Eα, θ); deduced pion production role. Comparison with data.

doi: 10.1016/S0370-2693(98)00002-1
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1997GA03      Z.Phys. A357, 101 (1997)

A.Gardestig

Threshold Production of the Hypertriton

NUCLEAR REACTIONS 2H(p, X), E ≈ threshold; calculated hypertriton, (dΛK+) production associated σ(θ). Two-step model.

doi: 10.1007/s002180050220
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