Coherent Dissociation $^{16}$O~$\rightarrow$~4$α$ in Photoemulsion at an Incident Momentum of 4.5 GeV/$c$ per Nucleon
Nina P. AndreevaInstitute of High Energy Physics . National Academy of Sciences of Kazakhstan , pos. Ala-Tau , Almaty , 480082 KazakhstanZ.V. AnzonInstitute of High Energy Physics . National Academy of Sciences of Kazakhstan , pos. Ala-Tau , Almaty , 480082 KazakhstanV.I. BubnovInstitute of High Energy Physics . National Academy of Sciences of Kazakhstan , pos. Ala-Tau , Almaty , 480082 KazakhstanA. Sh. GaitinovInstitute of High Energy Physics . National Academy of Sciences of Kazakhstan , pos. Ala-Tau , Almaty , 480082 KazakhstanG.Z. EligbaevaInstitute of High Energy Physics . National Academy of Sciences of Kazakhstan , pos. Ala-Tau , Almaty , 480082 KazakhstanL.E. EremenkoInstitute of High Energy Physics . National Academy of Sciences of Kazakhstan , pos. Ala-Tau , Almaty , 480082 KazakhstanG.S. KalyachkinaInstitute of High Energy Physics . National Academy of Sciences of Kazakhstan , pos. Ala-Tau , Almaty , 480082 KazakhstanE.K. KanyginaInstitute of High Energy Physics . National Academy of Sciences of Kazakhstan , pos. Ala-Tau , Almaty , 480082 KazakhstanA.M. SeitimbetovInstitute of High Energy Physics . National Academy of Sciences of Kazakhstan , pos. Ala-Tau , Almaty , 480082 KazakhstanI.Ya. ChasnikovInstitute of High Energy Physics . National Academy of Sciences of Kazakhstan , pos. Ala-Tau , Almaty , 480082 KazakhstanTs.I. ShakhovaM. HaidukInstitute of Physics , Romania Academy of Sciences , Bucharest . RomaniaS.A. KrasnovJoint Insitute for Nuclear Research , Dubna , Russia , Moscow oblast' , 141980 RussiaMaksimkina, T. N.Joint Insitute for Nuclear Research , Dubna , Russia , Moscow oblast' , 141980 RussiaK.D. TolstovJoint Insitute for Nuclear Research , Dubna , Russia , Moscow oblast' , 141980 RussiaG.M. ChernovJoint Insitute for Nuclear Research , Dubna , Russia , Moscow oblast' , 141980 RussiaN.A. SalmanovaD.A. SalomovA. KhushvaktovaF.A. AvetyanYerevan Physics Institute , ul. Brat'ev Alikhanian 2 . Yerevan , 375036 ArmeniaN.A. MarutyanYerevan Physics Institute , ul. Brat'ev Alikhanian 2 . Yerevan , 375036 ArmeniaL. T. SarkisovaYerevan Physics Institute , ul. Brat'ev Alikhanian 2 . Yerevan , 375036 ArmeniaV.F. SarkisianYerevan Physics Institute , ul. Brat'ev Alikhanian 2 . Yerevan , 375036 ArmeniaM. I. AdamovichLebedev Institute of Physics , Russian Academy of Sciences. Leninskii pr. 53 . Moscow , 117924 RussiaYu. A. BashmakovV.G. LarionovaLebedev Institute of Physics , Russian Academy of Sciences. Leninskii pr. 53 . Moscow , 117924 RussiaG. I. OrlovaRussian Academy of SciencesN. G. PeresadkoRussian Academy of SciencesM.I. TretyakovaLebedev Institute of Physics , Russian Academy of Sciences. Leninskii pr. 53 . Moscow , 117924 RussiaS. P. KharlamovRussian Academy of SciencesM. M. ChemyavskyLebedev Institute of Physics , Russian Academy of Sciences. Leninskii pr. 53 . Moscow , 117924 RussiaV.G. BogdanovKhopin Radium Institute , St. Petersburg , 197022 RussiaV.A. PlyushchevKhopin Radium Institute , St. Petersburg , 197022 RussiaZ.I. Solov'evaKhopin Radium Institute , St. Petersburg , 197022 RussiaV. V. BelagaInstitute of Nuclear PhysicsA. I. BondarenkoInstitute of Nuclear PhysicsSh. A. RustamovaA. G. ChemovInstitute of Nuclear Physics . Academy of Sciences of Uzbekistan , pos. Ulughbek , Tashkent , 702132 UzbekistanN. N. KostanashviliTbilisi State University , Universitetskaya ul. 9 , Tbilisi , 380086 GeorgiaS. Vokál
2011en
ABI
Annotatsiya
First searches for the coherent dissociation of relativistic oxygen nuclei into four a particles are reported. It is shown that reactions of this type are characterized by a significantly lower decay temperature than the conventional multifragmentation of residual projectile nuclei. The momentum spectra and correlations of a panicles are not reproduced by the simple statistical model of direct fragmentation. The possibility that the oxygen nucleus undergoing fragmentation acquires a nonzero angular momentum in the collision process is discussed.
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