Year: 2014
Type: article
Abstract: Exclusive and kinematically complete high-statistics measurements of quasifree polarized $\stackrel{\ensuremath{\rightarrow}}{n}p$ scattering have been performed in the energy region of the narrow resonancelike structure ${d}^{*}$ with $I({J}^{P})=0({3}^{+})$, $M\ensuremath{\approx}2380\text{ }\text{ }\mathrm{MeV}$, and $\mathrm{\ensuremath{\Gamma}}\ensuremath{\approx}70\text{ }\text{ }\mathrm{MeV}$ observed recently in the double-pionic fusion channels $pn\ensuremath{\rightarrow}d{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}$ and $pn\ensuremath{\rightarrow}d{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$. The experiment was carried out with the WASA detector setup at COSY having a polarized deuteron beam impinged on the hydrogen pellet target and utilizing the quasifree process $\stackrel{\ensuremath{\rightarrow}}{d}p\ensuremath{\rightarrow}np+{p}_{\text{spectator}}$. This allowed the $np$ analyzing power, ${A}_{y}$, to be measured over a broad angular range. The obtained ${A}_{y}$ angular distributions deviate systematically from the current SAID SP07 NN partial-wave solution. Incorporating the new ${A}_{y}$ data into the SAID analysis produces a pole in the $^{3}{D}_{3}\ensuremath{-}^{3}{G}_{3}$ waves in support of the ${d}^{*}$ resonance hypothesis.
Source: Physical Review Letters
Authors: P. Adlarson, W. Augustyniak, W. Bardan, M. Bashkanov, F. S. Bergmann, M. Berłowski, H. Bhatt, M. Büscher, H. Calén, I. Ciepał, H. Clement, D. Coderre, E. Czerwiński, K. Demmich, E. Doroshkevich, R. Engels, A. Erven, W. Erven, W. Eyrich, P. Fedorets, K. Föhl, K. Fransson, F. Goldenbaum, P. Goslawski, A. Goswami, K. Grigoryev, C.-O. Gullström, F. Hauenstein, L. Heijkenskjöld, V. Hejny, M. Hodana, B. Höistad, N. Hüsken, A. Jany, B. R. Jany, L. Jarczyk, T. Johansson, B. Kamys, G. Kemmerling, F. A. Khan, A. Khoukaz, D. A. Kirillov, S. Kistryn, H. Kleines, B. Kłos, M. Krapp, W. Krzemień, P. Kulessa, A. Kupść, K. Lalwani, D. Lersch, B. Lorentz, A. Magiera, R. Maier, P. Marciniewski, B. Mariański, M. Mikirtychiants, H.-P. Morsch, P. Moskal, H. Ohm, I. Ozerianska, E. Perez del Rio, N. M. Piskunov, P. Podkopał, D. Prasuhn, A. Pricking, D. Pszczel, K. Pysz, A. Pyszniak, C. F. Redmer, J. Ritman, A. Roy, Z. Rudy, S. Sawant, S. Schadmand, T. Sefzick, V. Serdyuk, V. Serdyuk, R. Siudak, T. Skorodko, M. Skurzok, J. Smyrski, V. Sopov, R. Stassen, J. Stepaniak, E. Stephan, G. Sterzenbach, H. Stockhorst, H. Ströher, A. Szczurek, A. Täschner, A. Trzciński, R. Varma, G. J. Wagner, M. Wolke, A. Wrońska, P. Wüstner, P. Wurm, A. Yamamoto, L. Yurev, J. Zabierowski, M. J. Zieliński, A. Zink, J. Złomańczuk, P. Żuprański, M. Żurek, R. L. Workman, W. J. Briscoe, I. I. Strakovsky
Institutions: Uppsala University, National Centre for Nuclear Research, Jagiellonian University, University of Tübingen, University of Münster, Indian Institute of Technology Bombay, Forschungszentrum Jülich, Heinrich Heine University Düsseldorf, Ruhr University Bochum, Friedrich-Alexander-Universität Erlangen-Nürnberg, Institute for Theoretical and Experimental Physics, Justus-Liebig-Universität Gießen, Indian Institute of Technology Indore, Petersburg Nuclear Physics Institute, RWTH Aachen University, University of Silesia in Katowice, Institute of Nuclear Physics, Polish Academy of Sciences, Joint Institute for Nuclear Research, High Energy Accelerator Research Organization, George Washington University
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funder: U.S. Department of Energy
OpenAlex ID: W2011467587