000 02300nab a2200325 c 4500
001 vtls000532455
003 RU-ToGU
005 20210907024327.0
007 cr |
008 181202|2015 xxu s a eng|dd
024 7 _a10.1103/PhysRevC.91.015201
_2doi
035 _ato000532455
040 _aRU-ToGU
_brus
_cRU-ToGU
245 1 0 _aABC effect and resonance structure in the double-pionic fusion to 3He
_cP. Adlarson, W. Augustyniak, W. Bardan [et.al.]
520 3 _aExclusive and kinematically complete measurements of the double pionic fusion to 3He have been performed in the energy region of the so-called ABC effect, which denotes a pronounced low-mass enhancement in the ππ-invariant mass spectrum. The experiments were carried out with the WASA detector setup at COSY (the cooler synchrotron at Forschungszentrum Jlich). Similar to the observations in the basic pn→dπ0π0 reaction and in the dd→4Heπ0π0 reaction, the data reveal a correlation between the ABC effect and a resonance-like energy dependence in the total cross section. Differential cross sections are well described by the hypothesis of d∗ resonance formation during the reaction process in addition to the conventional t-channel ΔΔ mechanism. The deduced d∗ resonance width can be understood from collision broadening due to Fermi motion of the nucleons in initial and final nuclei.
653 _aпионы (частицы)
653 _aрезонансные структуры
653 _aспектры масс
655 4 _aстатьи в журналах
_9681159
700 1 _aAdlarson, P.
_9268947
700 1 _aBardan, W.
_9268948
700 1 _aSkorodko, T.
_9173252
700 1 _aAugustyniak, W.
_9268955
710 2 _aТомский государственный университет
_bФизический факультет
_bНаучные подразделения ФФ
_9107954
773 0 _tPhysical Review C
_d2015
_gVol. 91, № 1. P. 015201-1-015201-8
_x0556-2813
852 4 _aRU-ToGU
856 7 _uhttp://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000532455
908 _aстатья
999 _c391019