BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN BEGIN:VEVENT SUMMARY:Generation of strong magnetic fields in quark stars driven by the electroweak interaction of quarks DTSTART;VALUE=DATE-TIME:20161014T103500Z DTEND;VALUE=DATE-TIME:20161014T105500Z DTSTAMP;VALUE=DATE-TIME:20260814T154425Z UID:indico-contribution-109-788@cern.ch DESCRIPTION:Speakers: Maxim Dvornikov (Institute of Terrestrial Magnetism\ , Ionosphere and Radiowave Propagation (IZMIRAN))\nWe study the generation of strong large scale magnetic fields in dense quark matter. The magnetic field growth is owing to the magnetic field instability driven by the ele ctroweak interaction of quarks. We discuss the situation when the chiral s ymmetry is unbroken in the degenerate quark matter. In this case we predic t the amplification of the seed magnetic field $10^{12}$ G to the strength s $(10^{14}-10^{15})$ G. In our analysis we use the typical parameters of the quark matter in the core of a hybrid star or in a quark star. We also discuss the application of the obtained results to describe the magnetic f ields generation in magnetars.\n\nReferences\n\n1. M. Dvornikov\, Generati on of strong magnetic fields in dense quark matter driven\nby the electrow eak interaction of quarks\, arXiv:1608.04946.\n\n2. M. Dvornikov\, Relaxat ion of the chiral imbalance and the generation of magnetic fields in magne tars\, to be published in JETP 150 (2016)\, arXiv:1510.06228.\n\n3. M. Dvo rnikov\, Role of particle masses in the magnetic field generation driven b y the parity violating interaction\, Phys.Lett.B 760\, 406 (2016).\n\n4. M . Dvornikov\, V.B. Semikoz\, Energy source for the magnetic field growth in magnetars driven by the electron-nucleon interaction\, Phys.Rev.D 92\, 083007 (2015).\n\n5. M. Dvornikov\, V.B. Semikoz\, Generation of the ma gnetic helicity in a neutron star driven by the electroweak electron-nucle on interaction\, JCAP 05(2015)032.\n\n6. M. Dvornikov\, V.B. Semikoz\, M agnetic field instability in a neutron star driven by the electroweak elec tron-nucleon interaction versus the chiral magnetic effect\, Phys.Rev.D 91 \, 061301 (2015).\n\nhttps://indico.particle.mephi.ru/event/4/contribution s/788/ LOCATION:Milan Hotel Rossini URL:https://indico.particle.mephi.ru/event/4/contributions/788/ END:VEVENT BEGIN:VEVENT SUMMARY:New detector for studies of cumulative processes in hadron collis ions in NA61/SINE at the SPS DTSTART;VALUE=DATE-TIME:20161014T115500Z DTEND;VALUE=DATE-TIME:20161014T121500Z DTSTAMP;VALUE=DATE-TIME:20260814T154425Z UID:indico-contribution-109-762@cern.ch DESCRIPTION:Speakers: Tatiana Lazareva (Saint-Petersburg State University) \nThe increase of luminosity of the SPS beams expected after 2020\nallows to consider the investigations of rather rare processes. In particular\,\n a so-called cumulative particle production can be studied in hadron collis ions by measurements of secondary particle yields in the kinematically fo rbidden region. It could be considered either as a result\nof hard parton collisions with some large density multi quark configuration or\ndue to t he formation of heavy baryonic resonances.\nStudies in the backward hemisp here in the fixed target experiment should bring\nthe event-by-event data that could be used\, along with those from the forward region\,\nin the co rrelation analysis\, thus giving new constraints to the models.\n\nIn thi s report the design\, technology and the first GEANT simulations\nof new d etector are presented and discussed.\n\nThe author of this report from the SPbSU acknowledges the support\n by the Russian Science Foundation resear ch grant 16-12-10176.\n\nhttps://indico.particle.mephi.ru/event/4/contribu tions/762/ LOCATION:Milan Hotel Rossini URL:https://indico.particle.mephi.ru/event/4/contributions/762/ END:VEVENT BEGIN:VEVENT SUMMARY:Equation of state of strange quark matter in a nonuniform magnetic field DTSTART;VALUE=DATE-TIME:20161014T101500Z DTEND;VALUE=DATE-TIME:20161014T103500Z DTSTAMP;VALUE=DATE-TIME:20260814T154425Z UID:indico-contribution-109-688@cern.ch DESCRIPTION:Speakers: Alexander Isayev (Kharkov Institute of Physics and T echnology)\nThermodynamic properties of strange quark matter (SQM) in a\nn onuniform magnetic field are studied within the phenomenological\nMIT bag model under the charge neutrality and beta equilibrium\nconditions\, relev ant to the interior of strange quark stars. The\nspatial dependence of the magnetic field strength is modeled by the\ndependence on the baryon chemi cal potential. The total energy\ndensity\, longitudinal and transverse pre ssures in magnetized SQM are\nfound as functions of the baryon chemical po tential. It is clarified\nthat the central magnetic field strength in a st range quark star is\nbound from above by the value at which the derivative of the\nlongitudinal pressure with respect to the baryon chemical potenti al\nvanishes first somewhere in the interior of a star under varying the\n central field. Above this upper bound\, the instability along the\nmagneti c field is developed in magnetized SQM.\n\nhttps://indico.particle.mephi.r u/event/4/contributions/688/ LOCATION:Milan Hotel Rossini URL:https://indico.particle.mephi.ru/event/4/contributions/688/ END:VEVENT BEGIN:VEVENT SUMMARY:Stern-Gerlach experiment on the lattice DTSTART;VALUE=DATE-TIME:20161014T105500Z DTEND;VALUE=DATE-TIME:20161014T111500Z DTSTAMP;VALUE=DATE-TIME:20260814T154425Z UID:indico-contribution-109-577@cern.ch DESCRIPTION:Speakers: Olga Solovjeva (NRC "Kurchatov Institute" SSC RF Ins titute of Theoretical and Experimental Physics &\; National Research N uclear University “MEPhI”)\nWe have explored ground state energies of the light vector mesons on the base of the SU(3) lattice gauge theory. Thi s study was performed without dynamical quarks. We have observed the energ ies spliting depending on the value of the spin projections on an external magnetic field. The ground state energy of neutral mesons with the zero s pin projection diminishes with the increase of the field\, while the energ y of charged one increases according to the theoretical expectation. The n eutral mesons energies with non-zero spin projections increase with the va lue of the magnetic field. The Landau level describes the energy of a char ged point-like particle in a magnetic field\, while in our calculations we took into account the quark structure of a particle and introduced the te rm with magnetic polarizability.\nThe background magnetic field enables to calculate the magnetic polarizabilities and the magnetic dipole moments o f the hadrons. We measured the energy of a meson as a function of the unif orm abelian field. In our calculations external magnetic field is constant and it's values vary from $0$ up to $2.5 ~GeV^{2}$. The magnetic dipole m oment of the charged $\\rho$ meson has been defined for various quark mass es more precisely then in our previous work. This value is in good agreeme nt with the experimentally obtained value. We have also estimated the magn etic dipole moment of the $K^{∗}$ meson.\n\nhttps://indico.particle.meph i.ru/event/4/contributions/577/ LOCATION:Milan Hotel Rossini URL:https://indico.particle.mephi.ru/event/4/contributions/577/ END:VEVENT BEGIN:VEVENT SUMMARY:The effect of inclusion of Delta resonances in relativistic mean-f ield model with scaled hadron masses and coupling constants DTSTART;VALUE=DATE-TIME:20161014T113500Z DTEND;VALUE=DATE-TIME:20161014T115500Z DTSTAMP;VALUE=DATE-TIME:20260814T154425Z UID:indico-contribution-109-576@cern.ch DESCRIPTION:Speakers: Konstantin Maslov (National Research Nuclear Univers ity "MEPhI")\nKnowledge of the equation of state of baryon matter at larg e densities plays a decisive role in description of neutron star interio rs. With an increase of the baryon density filling of the Fermi seas of th e hyperons and delta-isobars becomes possible. The inclusion of the hypero ns and delta resonances into standard relativistic mean-field models resul ts in a strong softening of the equation of state and a lowering of the maximum neutron star mass below masses of two known pulsars. We extend ou r recently developed relativistic mean-field model with scaled hadron mass es and couplings\, and with hyperons\, taking into account of delta reson ances and we analyze available empirical information to put constraints on the couplings of $\\Delta$s with meson fields. We show\, that with the inclusion of delta isobars our equation of state satisfies the majority of presently known experimental constraints.\n\nhttps://indico.particle.me phi.ru/event/4/contributions/576/ LOCATION:Milan Hotel Rossini URL:https://indico.particle.mephi.ru/event/4/contributions/576/ END:VEVENT BEGIN:VEVENT SUMMARY:Bose–Einstein correlations and pion lasers in strong interaction processes DTSTART;VALUE=DATE-TIME:20161014T111500Z DTEND;VALUE=DATE-TIME:20161014T113500Z DTSTAMP;VALUE=DATE-TIME:20260814T154425Z UID:indico-contribution-109-493@cern.ch DESCRIPTION:Speakers: Vitalii Okorokov (National Research Nuclear Universi ty "MEPhI")\nA multi-particle Bose–Einstein symmetrization can enhance t he emission of pions and as consequence can lead to the creation of pion l asers in strong interactions at high energies. Onset of the Bose–Einstei n condensation is driven by the critical space density of charged secondar y bosons which are mostly pions. The energy dependence of space pion densi ty at freeze-out and its critical value\, calculated from estimations for volume of emission region and for total multiplicity\, is investigated for both the proton-proton and the nucleus-nucleus collisions. The space-time extent of emission region is derived with the help of Bose–Einstein cor relations of pion pairs produced in various collisions within the framewor k of three dimensional Gaussian model for the source. It is shown that the space density of charged particles is smaller than its critical value and Bose–Einstein condensation cannot be expected for secondary pions in pr oton-proton collisions at energies up to about 100 TeV or even higher. A m arked enhancement is observed for charged pion density in heavy ion collis ions with respect to the proton-proton ones at similar collision energies. Relation between the charged particle density and its critical value allo w the possibility of lasing behavior for secondary pions in nucleus-nucleu s collisions in multi-TeV energy domain.\n\nhttps://indico.particle.mephi. ru/event/4/contributions/493/ LOCATION:Milan Hotel Rossini URL:https://indico.particle.mephi.ru/event/4/contributions/493/ END:VEVENT END:VCALENDAR