Impact-parameter dependence of neutral pion production in the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">Ar</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>36</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>on<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">Al</m

Badal, A; Barbera, R.; Palmeri, A.; Gs, Pappalardo; Riggi, F.; Ac, Russo; Russo, G.; Turrisi, R.; Agodi, C.; Alba, R.; Bellia, G.; Coniglione, R.; A, Del Zoppo; Finocchiaro, P.; Maiolino, C.; Migneco, E.; Piattelli, P.; Sapienza, P.; Péghaire, A.

doi:10.1103/physrevc.48.2350

Cited by 18 publications

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“…However, while the gross properties of subthreshold particle production are relatively well explained by these models, the description of spectral properties of neutral pions does not always provide satisfactory results. While for Ar+Al collisions at 95A MeV a rather consistent description of π 0 emission was found [4], the yield of neutral pions from Kr+Ni collisions at 60A MeV was strongly underpredicted in the high energy part of the spectrum [5]. Phenomenological models of first-chance nucleon-nucleon collisions have also been used to describe the energy scaling of the cross sections (e.g.…”

Section: Introductionmentioning

confidence: 99%

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Emission patterns of neutral pions in40AMeV Ta+Au reactions

et al. 2010

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Differential cross sections of neutral pions emitted in 181 Ta+ 197 Au collisions at a beam energy of 39.5A MeV have been measured with the two-arm photon spectrometer (TAPS). The kinetic energy and transverse momentum spectra of neutral pions cannot be properly described in the framework of the thermal model, nor when the reabsorption of pions is accounted for in a phenomenological model. However, high energy and high momentum tails of the pion spectra can be well fitted through thermal distributions with unexpectedly soft temperature parameters below 10 MeV.

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Section: Introductionmentioning

confidence: 99%

“…In another extreme, purely thermal models of particle emission have been applied to describe the interaction zone of two colliding nuclei [7]. Strong reabsorption processes of pions in the nuclear medium have been incorporated in both the transport and thermal models [4,7,8].…”

Section: Introductionmentioning

confidence: 99%