- publication . Article . Other literature type . Preprint . 2018Open Access EnglishAuthors:K. Grigoryev; Eremey Valetov; Maria Zurek; V. Kamerdzhiev; Yu. Valdau; Pia Thörngren Engblom; Alexander J. Silenko; I. A. Koop; I. Keshelashvili; Martin Berz; ...Publisher: American Physical SocietyProject: EC | HADRONPHYSICS3 (283286), EC | srEDM (694340)
This paper reports the first simultaneous measurement of the horizontal and vertical components of the polarization vector in a storage ring under the influence of a radio frequency (rf) solenoid. The experiments were performed at the Cooler Synchrotron COSY in Julich u...
- publication . Article . Preprint . 2014Open Access EnglishAuthors:Dimitri Agadjanov; Ulf-G. Meißner; Akaki Rusetsky;handle: 2128/15749Publisher: SpringerProject: EC | HADRONPHYSICS3 (283286)
Comment: 35 pages, 4 figures
- publication . Article . Preprint . 2014Open AccessAuthors:Ulf-G. Meißner; Ulf-G. Meißner; J. Gegelia; J. Gegelia;handle: 2128/22795Publisher: Springer Science and Business Media LLCProject: EC | HADRONPHYSICS3 (283286)
Two-loop corrections to the pole mass of the vector boson and the pole masses and the magnetic moments of fermions are calculated in the framework of an effective field theory of massive Yang-Mills fields interacting with fermions. It is shown that the limit of vanishin...
- publication . Article . Preprint . 2014Open Access EnglishAuthors:Ulf-G. Meißner; Ulf-G. Meißner; Akaki Rusetsky; Véronique Bernard; Andria Agadjanov;handle: 2128/19807Publisher: ElsevierProject: EC | HADRONPHYSICS3 (283286)
Using the non-relativistic effective field theory framework in a finite volume, we discuss the extraction of the $\Delta N\gamma^*$ transition form factors from lattice data. A counterpart of the L\"uscher approach for the matrix elements of unstable states is formulate...
- publication . Preprint . Article . Other literature type . 2015Open Access EnglishAuthors:J. Gegelia; J. Gegelia; Evgeny Epelbaum; A. M. Gasparyan; A. M. Gasparyan; Hermann Krebs;Project: EC | HADRONPHYSICS3 (283286), EC | NUCLEAREFT (259218)
Comment: 16 pages, 4 figures
- publication . Article . Other literature type . 2013Open Access EnglishAuthors:S. Mikirtytchiants; S. Mikirtytchiants; V.I. Komarov; M. D. Tabidze; H. Ströher; Yu. N. Uzikov; M. S. Nioradze; V. Kurbatov; A. I. Kulikov; V. Serdyuk; ...Publisher: ELSEVIER SCIENCE BVProject: EC | HADRONPHYSICS3 (283286)
Abstract The transverse spin correlations A x , x and A y , y in the n → p → → d π 0 reaction have been measured for the first time in quasi-free kinematics at the COSY-ANKE facility using a polarised deuteron beam incident on a polarised hydrogen cell target. The resul...
- publication . Article . Preprint . 2013Open Access EnglishAuthors:Shmakova, V.; Mchedlishvili, D.; Dymov, S.; Azaryan, T.; Barsov, S.; Chiladze, D.; Engels, R.; Gebel, R.; Gou, B.; Grigoryev, K.; ...handle: 2128/13261Publisher: North-Holland Publ.Project: EC | HADRONPHYSICS3 (283286)
The transverse spin correlations Axx and Ayy in the np-> d pi^0 reaction have been measured for the first time in quasi-free kinematics at the COSY-ANKE facility using a polarised deuteron beam incident on a polarised hydrogen cell target. The results obtained for neutr...
- publication . Article . Preprint . Other literature type . 2015Open Access EnglishAuthors:A. Lehrach; A. Pesce; A. Khoukaz; V. Hejny; A. Magiera; S. Mey; B. Kamys; Martin Rosenthal; Hans-Joachim Krause; H. Straatmann; ...handle: 2128/9480Project: EC | HADRONPHYSICS3 (283286)
A new method to determine the spin tune is described and tested. In an ideal planar magnetic ring, the spin tune - defined as the number of spin precessions per turn - is given by $\nu_s = \gamma G$ (gamma is the Lorentz factor, $G$ the magnetic anomaly). For 970 MeV/c ...
- publication . Preprint . Article . Other literature type . 2015Open Access EnglishAuthors:A. I. Kulikov; Nikolai N. Nikolaev; C. Weidemann; G. G. Macharashvili; M. Gaisser; U. Bechstedt; M. Mielke; G. Tagliente; A. Pesce; Helmut Soltner; ...handle: 2128/10757Project: EC | POLPBAR (246980), EC | HADRONPHYSICS3 (283286), EC | HADRONPHYSICS2 (227431)
The paper describes the commissioning of the experimental equipment and the machine studies required for the first spin-filtering experiment with protons at a beam kinetic energy of $49.3\,$MeV in COSY. The implementation of a low-$\beta$ insertion made it possible to a...
- publication . Article . Preprint . Other literature type . 2014Open Access EnglishAuthors:Dalibor Djukanovic; J. Gegelia; J. Gegelia; Evgeny Epelbaum; Ulf-G. Meißner; Ulf-G. Meißner;handle: 2128/8894Publisher: ELSEVIER SCIENCE BVProject: EC | HADRONPHYSICS3 (283286), EC | NUCLEAREFT (259218)
The magnetic moment of the \rho-meson is calculated in the framework of a low-energy effective field theory of the strong interactions. We find that the complex-valued strong interaction corrections to the gyromagnetic ratio are small leading to a value close to the rea...
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