# Acta Physica Polonica B (Jagiellonian University)

 2018-05-0218:47 A Ranking Method for Selection of $\eta$ Mesons in High Multiplicity Events / Bingül, A. ; Şaşmaz, U. ; Beddall, A.J. The selection of $\eta$ mesons with a high efficiency and a high purity can be important in the formation of statistically significant invariant mass spectra in the reconstruction of short-lived particles such as $\eta' \rightarrow \pi^{+} \pi^{-} \eta$. [...] Published in Acta Physica Polonica B 49 (2018) 727-740 10.5506/APhysPolB.49.727 arXiv:1803.03618 Fulltext: PDF PDF (PDFA); 2018-02-2314:17 Stopped Nucleons in Configuration Space / Bialas, Andrzej ; Bzdak, Adam ; Koch, Volker In this note, using the simplified colour string model, we study the configuration space distribution of stopped nucleons in heavy-ion collisions. [...] Published in Acta Physica Polonica B 49 (2018) 103-113 10.5506/APhysPolB.49.103 arXiv:1608.07041 Fulltext: PDF PDF (PDFA); 2018-01-3109:44 Corrections to (Pseudo)Scalars Decay into a Fermion Pair from Gravitational Torsion / Rojas Abatte, Felipe ; Zamora-Saa, Jilberto ; Castillo-Felisola, Oscar ; Díaz, Bastian ; et al We study the contribution of the torsion-descendent four-fermion contact interaction to the decay width of a neutral (pseudo)scalar field into a fermion pair. [...] Published in Acta Physica Polonica B 49 (2018) 41-57 10.5506/APhysPolB.49.41 arXiv:1704.08879 Fulltext: PDF PDF (PDFA); 2017-12-0713:14 Analysis of the $\frac {3}{2}^{\pm }$ Pentaquark States in the Diquark Model with QCD Sum Rules / Zhang, Jun-Xia ; Wang, Zhi-Gang ; Di, Zun-Yan In this article, we construct the scalar--diquark--axialvector--diquark--antiquark-type interpolating currents, and study the masses and pole res-idues of the $J^{P}=\frac{3}{2}^{\pm}$ hidden-charmed pentaquark states with the QCD sum rules. [...] Published in Acta Physica Polonica B 48 (2017) 2013-2030 10.5506/APhysPolB.48.2013 arXiv:1711.10728 Fulltext: PDF PDF (PDFA); 2017-10-1309:44 Production of Dirac Particles in External Electromagnetic Fields / Sogut, Kenan ; Yanar, Hilmi ; Havare, Ali Pair creation of spin-$\frac{1}{2}$ particles in Minkowski spacetime is investigated by obtaining exact solutions of the Dirac equation in the presence of electromagnetic fields and using them for determining the Bogoliubov coefficients. [...] Published in Acta Physica Polonica B 48 (2017) 1493-1505 10.5506/APhysPolB.48.1493 arXiv:1703.07776 Fulltext: PDF PDF (PDFA); 2017-10-1309:43 Langevin Diffusion Coefficients Ratio in STU Model with Higher Derivative Corrections / Pourhassan, B. ; Karimi, M. ; Mojarrad, S. In this article, we study Langevin diffusion coefficients for the five-dimensional $\mathcal{N}=2$ STU model in the presence of higher derivative corrections. [...] Published in Acta Physica Polonica B 48 (2017) 1507-1514 10.5506/APhysPolB.48.1507 arXiv:1709.06846 Fulltext: PDF PDF (PDFA); 2017-10-1309:43 Extra Lepton Pair Emission Corrections to Drell--Yan Processes in PHOTOS and SANC / Antropov, S. ; Arbuzov, A. ; Sadykov, R. ; Was, Z. In the paper, we present results for the final-state emissions of lepton pairs in decays of heavy intermediate states such as $Z$ boson. [...] Published in Acta Physica Polonica B 48 (2017) 1469-1492 10.5506/APhysPolB.48.1469 arXiv:1706.05571 Fulltext: PDF PDF (PDFA); 2017-09-2209:10 Non-classical Behavior of Moving Relativistic Unstable Particles / Urbanowski, K. We study the survival probability of moving relativistic unstable particles with definite momentum $\vec{p} \neq 0$. [...] Published in Acta Physica Polonica B 48 (2017) 1411-1432 10.5506/APhysPolB.48.1411 arXiv:1506.05076 Fulltext: PDF PDF (PDFA); 2017-09-2209:10 The LHC Mass Limits for the SU(2)$_{\rm L+R}$ Vector Resonance Triplet of a Strong Extension of the Standard Model / Gintner, Mikuláš ; Juráň, Josef In this paper, we derive the mass exclusion limits for the hypothetical vector resonances of a strongly interacting extension of the Standard Model using the most recent upper bounds on the cross sections for various resonance production processes. [...] Published in Acta Physica Polonica B 48 (2017) 1383-1397 10.5506/APhysPolB.48.1383 arXiv:1705.04806 Fulltext: PDF PDF (PDFA); 2017-08-0802:51 Classical BRST Charge and Observables in Reducible Gauge Theories / Bratchikov, Andrei V. We study the construction of the classical Becchi--Rouet--Stora--Tyutin (BRST) charge and observables for arbitrary reducible gauge theory. [...] Published in Acta Physica Polonica B 48 (2017) 1335-1348 10.5506/APhysPolB.48.1335 arXiv:1203.1937 Fulltext: PDF PDF (PDFA);