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Measurement of the d + d -> 4He + eta reaction using vector and tensor polarised beam has been performed at COSY using Big Karl magnetic spectrograph. The beam polarisation necessary for obtaining the vector and tensor analysing power for…

Vector and tensor analysing powers of the d(pol)p->(pp)n (charge-exchange) and d(pol)p->(pn)p (non-charge-exchange) breakup reactions have been measured with the ANKE spectrometer at the COSY ring at a deuteron beam energy of 1170 MeV for…

Transverse energy and charged particle pseudorapidity densities at midrapidity and their ratio, $dE_{T}/d\eta\mid_{mid} / dN_{ch}/d\eta|_{mid}$, are evaluated in a statistical model with longitudinal and transverse flows for the wide range…

High Energy Physics - Phenomenology · Physics 2009-11-10 Dariusz Prorok

The proton to proton polarization transfer coefficients K_x^{x'}, K_y^{y'}, K_z^{x'} and the proton to deuteron polarization transfer coefficients K_x^{x'}, K_y^{y'}, K_z^{x'}, K_x^{y'z'}, K_y^{z'z'}, K_z^{y'z'}, K_y^{x'z'} and…

Nuclear Theory · Physics 2014-11-18 H. Witala , J. Golak , R. Skibinski , W. Glockle , A. Nogga , E. Epelbaum , H. Kamada , A. Kievsky , M. Viviani

We report on a study of the $nd$ and $n\,^3$He radiative captures at thermal neutron energies, using wave functions obtained from either chiral or conventional two- and three-nucleon realistic potentials with the hyperspherical harmonics…

Nuclear Theory · Physics 2010-12-28 L. Girlanda , A. Kievsky , L. E. Marcucci , S. Pastore , R. Schiavilla , M. Viviani

The cross section for the pd --> ^3He eta pi0 reaction has been measured at a beam energy of 1450 MeV using the WASA detector at the CELSIUS storage ring and detecting one ^3He and four photons from the decays of the two photons. The data…

Radiative capture reaction rates for $^6$He, $^9$Be and $^{17}$Ne formation at astrophysical conditions are studied within a three-body model using the analytical transformed harmonic oscillator method to calculate their states. An…

Nuclear Theory · Physics 2018-01-11 J. Casal , M. Rodríguez-Gallardo , J. M. Arias , J. Gómez-Camacho

The analyzing power A_y for the p(pol)p --> pp eta reaction has been determined at the beam momentum p_{beam}=2010 MeV/c, corresponding to the excess energy Q=10 MeV. In the paper the method of the data analysis is briefly presented.

Recent advances in the study of pd radiative capture in a wide range of center-of-mass energy below and above deuteron breakup threshold are presented and discussed.

Nuclear Theory · Physics 2014-11-18 L. E. Marcucci , M. Viviani , R. Schiavilla , A. Kievsky , S. Rosati

We report on the measurement of the analyzing power for the (vec)pp->ppeta reaction with beam momenta of 2026 MeV/c and 2188 MeV/c performed with the WASA-at-COSY detector at the Cooler Synchrotron COSY. The eta meson from the (vec)pp->…

Nuclear Experiment · Physics 2016-12-21 I. Schaetti-Ozerianska , P. Moskal , M. Zielinski

High precision vector and tensor analyzing powers of elastic deuteron-proton d+p scattering have been measured at intermediate energies to investigate effects of three-nucleon forces (3NF). Angular distribution in the range of 70-120 degree…

The cross section and analyzing power of the pol{p}p -> pn pi+ reaction near threshold are estimated in terms of data obtained from the pol{p}p -> d pi+ and pp -> pp pi0 reactions. A simple final state interaction theory is developed which…

Nuclear Theory · Physics 2008-11-26 G. Faeldt , C. Wilkin

We present new data for angular distributions and on the cross section ratio of the p + d -> 3He + eta reaction at excess energies of Q = 48.8 MeV and Q = 59.8 MeV. The data have been obtained at the WASA-at-COSY experiment…

Nuclear Experiment · Physics 2014-06-24 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 , B. Kłos , H. Kleines , 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 , A. Passfeld , 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 , 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 , W. Węglorz , 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

We present conservative 3+1 general relativistic variable Eddington tensor radiation transport equations, including greater elaboration of the momentum space divergence (that is, the energy derivative term) than in previous work. These…

High Energy Astrophysical Phenomena · Physics 2013-07-08 Christian Y. Cardall , Eirik Endeve , Anthony Mezzacappa

The vector Ay and tensor analyzing powers Ayy and Axx for dp- elastic scattering were measured at Td = 880 MeV over the c.m. angular range from 60 to 140 degrees at the JINR Nuclotron. The data are compared with predictions of different…

The process e+e- --> p anti-p gamma is studied using 469 fb-1 of integrated luminosity collected with the BABAR detector at the PEP-II collider, at an e+e- center-of-mass energy of 10.6 GeV. From the analysis of the p anti-p invariant mass…

High Energy Physics - Experiment · Physics 2013-05-15 The BABAR Collaboration

The exclusive deuteron break-up reaction is analyzed within a covariant approach based on the Bethe-Salpeter equation with realistic meson-exchange interaction. Relativistic effects in the cross section, tensor analyzing power and…

Nuclear Theory · Physics 2008-11-26 L. P. Kaptari , B. Kaempfer , S. M. Dorkin , S. S. Semikh

The transverse energies and the charged particle multiplicities at midrapidity as well as their ratio, $dE_{T}/d\eta\mid_{mid} / dN_{ch}/d\eta|_{mid}$, are evaluated in a statistical model with expansion for the wide range of heavy-ion…

High Energy Physics - Phenomenology · Physics 2009-11-10 Dariusz Prorok

The cross section of neutron-deuteron radiative capture $n d\to {^3H}\gamma$ is calculated at energies relevant to Big-Bang nucleosynthesis ($ 20 \leq E \leq 200 $ Kev) with pionless Effective Field Theory. At these energies, magnetic…

Nuclear Theory · Physics 2016-09-08 H. Sadeghi , S. Bayegan

Present day chiral nucleon-nucleon potentials up to N3LO and three nucleon forces at N2LO are used to analyze nucleon-deuteron radiative capture at deuteron lab energies below E_d= 100 MeV. The differential cross section and the deuteron…

Nuclear Theory · Physics 2007-05-23 R. Skibinski , J. Golak , H. Witala , W. Gloeckle , A. Nogga , E. Epelbaum