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NSR database version of April 27, 2024.

Search: Author = T.Kolar

Found 5 matches.

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2023KE04      Phys.Rev.Lett. 130, 152502 (2023)

S.Kegel, P.Achenbach, S.Bacca, N.Barnea, J.Bericic, D.Bosnar, L.Correa, M.O.Distler, A.Esser, H.Fonvieille, I.Friscic, M.Heilig, P.Herrmann, M.Hoek, P.Klag, T.Kolar, W.Leidemann, H.Merkel, M.Mihovilovic, J.Muller, U.Muller, G.Orlandini, J.Pochodzalla, B.S.Schlimme, M.Schoth, F.Schulz, C.Sfienti, S.Sirca, R.Spreckels, Y.Stottinger, M.Thiel, A.Tyukin, T.Walcher, A.Weber

Measurement of the α-Particle Monopole Transition Form Factor Challenges Theory: A Low-Energy Puzzle for Nuclear Forces?

NUCLEAR REACTIONS ⁴He(e^-, e^-'), E=450, 690, 795 MeV; measured reaction products; deduced missing mass spectrum, monopole transition form factor, resonance parameters, modern nuclear forces, including those derived within chiral effective field theory fail to reproduce the excitation of the α particle. The Mainz Microtron MAMI.

doi: 10.1103/PhysRevLett.130.152502
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2023KO28      Phys.Lett. B 847, 138309 (2023)

T.Kolar, for the A1 Collaboration

Measurement of polarization transfer in the quasi-elastic ⁴⁰Ca(e(pol), e'p(pol))process

NUCLEAR REACTIONS ⁴⁰Ca(polarized e^-, e^-'p), E=600 MeV; measured reaction products, Ep, Ip; deduced proton polarization, polarization transfer to a bound proton in polarized electron knock-out reactions, deviations of the ratio of the polarization transfer components from that of a free proton. Comparison with shell model calculations. The Mainz Microtron (MAMI) two spectrometers.

doi: 10.1016/j.physletb.2023.138309
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2022KO01      Phys.Lett. B 824, 136798 (2022)

T.Kolar, for the A1 Collaboration

Measurements of the electron-helicity asymmetry in the quasi-elastic A(e(pol), e'p) process

NUCLEAR REACTIONS ²H, ¹²C(polarized e^-, e^-p), E=600, 630, 690 MeV; measured reaction products; deduced missing-energy spectrum, electron-helicity asymmetries. The MAMI facility of the Johannes Gutenberg University at Mainz.

doi: 10.1016/j.physletb.2021.136798
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2020KO33      Phys.Lett. B 811, 135903 (2020)

T.Kolar, for the A1 Collaboration

Comparison of recoil polarization in the ¹²C(e(pol), e'p(pol)) process for protons extracted from s and p shells

NUCLEAR REACTIONS ¹²C(polarized e, e'polarized p), E=600 MeV; measured reaction products, Eβ, Iβ, Ep, IP; deduced polarization components, ratios of given polarization-transfer components, polarization transfer to deeply bound protons in the s and p shells.

doi: 10.1016/j.physletb.2020.135903
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2018ES03      Phys.Rev.Lett. 121, 022503 (2018)

A.Esser, M.Thiel, P.Achenbach, K.Aulenbacher, S.Baunack, J.Berscic, D.Bosnar, L.Correa, M.Dehn, M.O.Distler, H.Fonvieille, I.Fricic, M.Gorchtein, S.Heidrich, P.Herrmann, M.Hoek, S.Kegel, Y.Kohl, T.Kolar, H.-J.Kreidel, F.E.Maas, H.Merkel, M.Mihovilovic, J.Muller, U.Muller, F.Nillius, C.Palatchi, K.D.Paschke, J.Pochodzalla, B.S.Schlimme, M.Schoth, F.Schulz, S.Sirca, B.Spruck, S.Stajner, V.Tioukine, A.Tyukin, A.Weber, C.Sfienti

First Measurement of the Q² Dependence of the Beam-Normal Single Spin Asymmetry for Elastic Scattering off Carbon

NUCLEAR REACTIONS ¹²C(polarized E, E), E=570 MeV; measured reaction products, Eβ, Iβ; deduced Q² dependence of the beam-normal single spin asymmetry.

doi: 10.1103/PhysRevLett.121.022503
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