Abstract
The polarization of protons emitted in [Formula Presented] reactions has been measured for three kinds of targets at [Formula Presented]. The values of the polarization that we obtain are significantly smaller than the values predicted using the nucleon-nucleon (NN) interaction in free space, and the discrepancy between the two is seen to increase monotonically as a function of the effective mean density, which is defined as a measure of the sensitivity of a reaction to density-dependent terms of the interaction. The experimental data are also compared with a model calculation that includes a relativistic effect, and it is found that inclusion of this effect is able to account for about half of the density-dependent discrepancy between the experimental results and the values predicted with the free space NN interaction. These results, in conjunction with the previous results at [Formula Presented], indicate that this discrepancy is not caused by a contribution of multistep processes and provide further evidence that there exists a medium effect.
| Original language | English |
|---|---|
| Number of pages | 1 |
| Journal | Physical Review C - Nuclear Physics |
| Volume | 69 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Jan 1 2004 |
| Externally published | Yes |
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All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
Cite this
Polarizations for proton knockout reactions from [Formula Presented] orbits at [Formula Presented]. / Andreev, V. A.; Andronenko, M. N.; Amalsky, G. M.; Belostotski, S. L.; Domchenkov, O. A.; Fedorov, O. Ya; Hatanaka, K.; Izotov, A. A.; Jgoun, A. A.; Kamiya, J.; Kisselev, A. Yu; Kopytin, M. A.; Miklukho, O. V.; Naryshkin, Yu G.; Noro, T.; Obayashi, E.; Prokofiev, A. N.; Prokofiev, D. A.; Sakaguchi, H.; Sulimov, V. V.; Shvedchikov, A. V.; Takeda, H.; Trush, S. I.; Vikhrov, V. V.; Wakasa, Tomotsugu; Yasuda, Y.; Yoshida, H. P.; Zhdanov, A.
In: Physical Review C - Nuclear Physics, Vol. 69, No. 2, 01.01.2004.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Polarizations for proton knockout reactions from [Formula Presented] orbits at [Formula Presented]
AU - Andreev, V. A.
AU - Andronenko, M. N.
AU - Amalsky, G. M.
AU - Belostotski, S. L.
AU - Domchenkov, O. A.
AU - Fedorov, O. Ya
AU - Hatanaka, K.
AU - Izotov, A. A.
AU - Jgoun, A. A.
AU - Kamiya, J.
AU - Kisselev, A. Yu
AU - Kopytin, M. A.
AU - Miklukho, O. V.
AU - Naryshkin, Yu G.
AU - Noro, T.
AU - Obayashi, E.
AU - Prokofiev, A. N.
AU - Prokofiev, D. A.
AU - Sakaguchi, H.
AU - Sulimov, V. V.
AU - Shvedchikov, A. V.
AU - Takeda, H.
AU - Trush, S. I.
AU - Vikhrov, V. V.
AU - Wakasa, Tomotsugu
AU - Yasuda, Y.
AU - Yoshida, H. P.
AU - Zhdanov, A.
PY - 2004/1/1
Y1 - 2004/1/1
N2 - The polarization of protons emitted in [Formula Presented] reactions has been measured for three kinds of targets at [Formula Presented]. The values of the polarization that we obtain are significantly smaller than the values predicted using the nucleon-nucleon (NN) interaction in free space, and the discrepancy between the two is seen to increase monotonically as a function of the effective mean density, which is defined as a measure of the sensitivity of a reaction to density-dependent terms of the interaction. The experimental data are also compared with a model calculation that includes a relativistic effect, and it is found that inclusion of this effect is able to account for about half of the density-dependent discrepancy between the experimental results and the values predicted with the free space NN interaction. These results, in conjunction with the previous results at [Formula Presented], indicate that this discrepancy is not caused by a contribution of multistep processes and provide further evidence that there exists a medium effect.
AB - The polarization of protons emitted in [Formula Presented] reactions has been measured for three kinds of targets at [Formula Presented]. The values of the polarization that we obtain are significantly smaller than the values predicted using the nucleon-nucleon (NN) interaction in free space, and the discrepancy between the two is seen to increase monotonically as a function of the effective mean density, which is defined as a measure of the sensitivity of a reaction to density-dependent terms of the interaction. The experimental data are also compared with a model calculation that includes a relativistic effect, and it is found that inclusion of this effect is able to account for about half of the density-dependent discrepancy between the experimental results and the values predicted with the free space NN interaction. These results, in conjunction with the previous results at [Formula Presented], indicate that this discrepancy is not caused by a contribution of multistep processes and provide further evidence that there exists a medium effect.
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U2 - 10.1103/PhysRevC.69.024604
DO - 10.1103/PhysRevC.69.024604
M3 - Article
VL - 69
JO - Physical Review C - Nuclear Physics
JF - Physical Review C - Nuclear Physics
SN - 0556-2813
IS - 2
ER -