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Abashian-Booth-Crowe resonance structure in the double pionic fusion to<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mrow /><mml:mn>4</mml:mn></mml:msup></mml:math>He

P. Adlarson,W. Augustyniak,W. Bardan,M. Bashkanov,T. Bednarski,F. S. Bergmann,M. Berłowski,Himani Bhatt,K.-Th. Brinkmann,M. Büscher,H. Calén,H. Clement,D. Coderre,E. Czerwiński,K. Demmich,E. Doroshkevich,Ralf Engels,W. Erven,W. Eyrich,P. Fedorets,K. Foehl,K. Fransson,F. Goldenbaum,P. Goslawski,K. Grigoryev,C.–O. Gullström,F. Hauenstein,L. Heijkenskjöld,V. Hejny,F. Hinterberger,M. Hodana,B. Höistad,Christina Husmann,A. Jany,Benedykt R. Jany,L. Jarczyk,T. Johansson,B. Kamys,G. Kemmerling,Farha Khan,A. Khoukaz,S. Kistryn,J. Klaja,H. Kleines,B. Kłos,Wojciech Krzemień,P. Kulessa,A. Kupść,K. Lalwani,D. Lersch,L. Li,B. Lorentz,A. Magiera,R. Maier,P. Marciniewski,B. Mariański,M. Mikirtychiants,H. P. Morsch,P. Moskal,Basanta Kumar Nandi,Szymon Niedźwiecki,H. Ohm,I. Ozerianska,C. Pauly,E. Pérez del Río,Y. Petukhov,P. Pluciński,P. Podkopał,D. Prasuhn,A. Pricking,D. Pszczel,K. Pysz,A. Pyszniak,C. F. Redmer,J. Ritman,Ankhi Roy,Z. Rudy,Siddhesh Sawant,S. Schadmand,A. Schmidt,V. Serdyuk,Nausheen R. Shah,R. Siudak,T. Skorodko,M. Skurzok,J. Smyrski,V. Sopov,R. Stassen,J. Steṕaniak,G. Sterzenbach,H. Stockhorst,H. Ströher,Antoni Szczurek,T. Tolba,A. Trzciński,R. Varma,P. Vlasov,G. J. Wagner,W. Wȩglorz,M. Wolke,A. Wrońska,P. Wüstner,P. Wurm,A. Yamamoto,X. Yuan,L. Yurev,J. Zabierowski,C. Zheng,Marcin Zieliński,W. Zipper,J. Złomańczuk,P. Żuprański

Physics

Resonance (particle physics)

Spectral line

2012

Exclusive and kinematically complete high-statistics measurements of the double pionic fusion reaction $dd \to ^4$He$\pi^0\pi^0$ have been performed in the energy range 0.8 - 1.4 GeV covering thus the region of the ABC effect, which denotes a pronounced low-mass enhancement in the $\pi\pi$-invariant mass spectrum. The experiments were carried out with the WASA detector setup at COSY. Similar to the observation in the basic $pn \to d \pi^0\pi^0$ reaction, the data reveal a correlation between the ABC effect and a resonance-like energy dependence in the total cross section. The maximum occurs at m=2.37 GeV + 2$m_N$, i.e. at the same position as in the basic reaction. The observed resonance width $\Gamma \approx$ 160 MeV can be understood from broadening due to Fermi motion of the nucleons in initial and final nuclei together with collision damping. Differential cross sections are described equally well by the hypothesis of a $pn$ resonance formation during the reaction process.

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“Abashian-Booth-Crowe resonance structure in the double pionic fusion to<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mrow /><mml:mn>4</mml:mn></mml:msup></mml:math>He” is a paper by P. Adlarson W. Augustyniak W. Bardan M. Bashkanov T. Bednarski F. S. Bergmann M. Berłowski Himani Bhatt K.-Th. Brinkmann M. Büscher H. Calén H. Clement D. Coderre E. Czerwiński K. Demmich E. Doroshkevich Ralf Engels W. Erven W. Eyrich P. Fedorets K. Foehl K. Fransson F. Goldenbaum P. Goslawski K. Grigoryev C.–O. Gullström F. Hauenstein L. Heijkenskjöld V. Hejny F. Hinterberger M. Hodana B. Höistad Christina Husmann A. Jany Benedykt R. Jany L. Jarczyk T. Johansson B. Kamys G. Kemmerling Farha Khan A. Khoukaz S. Kistryn J. Klaja H. Kleines B. Kłos Wojciech Krzemień P. Kulessa A. Kupść K. Lalwani D. Lersch L. Li B. Lorentz A. Magiera R. Maier P. Marciniewski B. Mariański M. Mikirtychiants H. P. Morsch P. Moskal Basanta Kumar Nandi Szymon Niedźwiecki H. Ohm I. Ozerianska C. Pauly E. Pérez del Río Y. Petukhov P. Pluciński P. Podkopał D. Prasuhn A. Pricking D. Pszczel K. Pysz A. Pyszniak C. F. Redmer J. Ritman Ankhi Roy Z. Rudy Siddhesh Sawant S. Schadmand A. Schmidt V. Serdyuk Nausheen R. Shah R. Siudak T. Skorodko M. Skurzok J. Smyrski V. Sopov R. Stassen J. Steṕaniak G. Sterzenbach H. Stockhorst H. Ströher Antoni Szczurek T. Tolba A. Trzciński R. Varma P. Vlasov G. J. Wagner W. Wȩglorz M. Wolke A. Wrońska P. Wüstner P. Wurm A. Yamamoto X. Yuan L. Yurev J. Zabierowski C. Zheng Marcin Zieliński W. Zipper J. Złomańczuk P. Żuprański published in 2012. It has an Open Access status of “green”. You can read and download a PDF Full Text of this paper here.