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CERN Document Server 2,037 záznamov nájdených  1 - 10ďalšíkoniec  skoč na záznam: Hľadanie trvalo 1.52 sekúnd. 
1.
Hydrodynamic series and hydrodynamization of expanding plasma in kinetic theory / Heller, Michal P. (Potsdam, Max Planck Inst. ; Perimeter Inst. Theor. Phys. ; Warsaw, Inst. Nucl. Studies) ; Kurkela, Aleksi (CERN ; Stavanger U.) ; Spaliński, Michal (Warsaw, Inst. Nucl. Studies ; Bialystok U.) ; Svensson, Viktor (Warsaw, Inst. Nucl. Studies ; Potsdam, Max Planck Inst.)
We explore the transition to hydrodynamics in a weakly-coupled model of quark-gluon plasma given by kinetic theory in the relaxation time approximation with conformal symmetry. We demonstrate that the gradient expansion in this model has a vanishing radius of convergence due to the presence of a transient (nonhydrodynamic) mode, in a way similar to results obtained earlier in strongly-coupled gauge theories. [...]
arXiv:1609.04803; CERN-TH-2016-199.- 2018-06-01 - 6 p. - Published in : Phys. Rev. D 97 (2018) 091503 Fulltext: PDF; Fulltext from Publisher: PDF; External link: Preprint
2.
Same-sign WW scattering at the LHC: can we discover BSM effects before discovering new states? / Kalinowski, Jan (CERN ; Warsaw U.) ; Kozów, Paweł (Warsaw U.) ; Pokorski, Stefan (Warsaw U.) ; Rosiek, Janusz (Warsaw U.) ; Szleper, Michał (Warsaw, Inst. Nucl. Studies ; NCBJ, Swierk) ; Tkaczyk, Sławomir (Fermilab)
It is possible that measurements of vector boson scattering (VBS) at the LHC will reveal disagreement with Standard Model predictions, but no new particles will be observed directly. The task is then to learn as much as possible about the new physics from a VBS analysis carried within the framework of the Effective Field Theory (EFT). [...]
arXiv:1802.02366; CERN-TH-2017-269.- 2018-05-22 - 24 p. - Published in : Eur. Phys. J. C 78 (2018) 403 Article from SCOAP3: PDF; Fulltext: 1802.02366 - PDF; fermilab-pub-18-033-e - PDF;
3.
Beta-delayed neutron emission of 134In134In and search for i13/2i13/2 single particle neutron state in 133Sn133Sn / Grzywacz, R (Dept of Physics and Astronomy University of Tennessee Knoxville Tennessee 37996 USA) ; Madurga, M (Dept of Physics and Astronomy University of Tennessee Knoxville Tennessee 37996 USA) ; Karny, M (Faculty of Physics University of Warsaw PL 00-681 Warsaw Poland) ; Algora, A (Instituto de Fisica Corpuscular Edificio de Institutos de Paterna E-46071 Valencia Spain) ; Allmond, J M (Physics Division Oak Ridge National Laboratory Oak Ridge Tennessee 37830 USA) ; Bardayan, D (Institute for Structure and Nucl Astrophysics Department of Physics Notre Dame Indiana 46556 USA) ; Benito, J (Grupo de Física Nuclear Universidad Complutense de Madrid 28040 Madrid Spain) ; Brewer, N (Physics Division Oak Ridge National Laboratory Oak Ridge Tennessee 37830 USA) ; Fijałkowska, A (Faculty of Physics University of Warsaw PL 00-681 Warsaw Poland) ; Gaffney, LP (The University of Liverpool Liverpool L69 7ZE United Kingdom) et al.
CERN-INTC-2020-027 ; INTC-P-554.
- 2020.
Fulltext
4.
Blasts of Light from Axions / Ikeda, Taishi (Lisbon, CENTRA) ; Brito, Richard (Potsdam, Max Planck Inst. ; INFN, Rome ; Rome U.) ; Cardoso, Vitor (Lisbon, CENTRA ; CERN)
The nature of dark matter is one of the longest-standing puzzles in science. Axions or axion-like particles are a key possibility, and arise in mechanisms to solve the strong CP problem but also in low-energy limits of string theory. [...]
arXiv:1811.04950.- 2019-03-01 - 6 p. - Published in : Phys. Rev. Lett. 122 (2019) 081101 Fulltext: PDF; Fulltext from Publisher: PDF;
5.
Analytic structure of nonhydrodynamic modes in kinetic theory / Kurkela, Aleksi (CERN ; Stavanger U.) ; Wiedemann, Urs Achim (CERN)
How physical systems approach hydrodynamic behavior is governed by the decay of nonhydrodynamic modes. Here, we start from a relativistic kinetic theory that encodes relaxation mechanisms governed by different timescales thus sharing essential features of generic weakly coupled nonequilib- rium systems. [...]
arXiv:1712.04376; CERN-TH-2017-255.- 2019-09-19 - 21 p. - Published in : Eur. Phys. J. C 79 (2019) 776 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF;
6.
Measurement of the cross section for hard exclusive π0π0 leptoproduction / COMPASS Collaboration
We report on a measurement of hard exclusive π0π0 muoproduction on the proton by COMPASS using 160 GeV/cc polarised μ+μ+ and μμ beams of the CERN SPS impinging on a liquid hydrogen target. From the average of the measured μ+μ+ and μμ cross sections, the virtual-photon proton cross section is determined as a function of the squared four-momentum transfer between initial and final proton in the range 0.08(GeV/c)2<|t|<0.64(GeV/c)20.08(GeV/c)2<|t|<0.64(GeV/c)2. [...]
arXiv:1903.12030; CERN-EP-2019-049.- 2020-06-10 - 9 p. - Published in : Phys. Lett. B 805 (2020) 135454 Article from SCOAP3: PDF; Fulltext: PDF; Fulltext from publisher: PDF;
7.
K over K++ multiplicity ratio for kaons produced in DIS with a large fraction of the virtual-photon energy / COMPASS Collaboration
The K over K++ multiplicity ratio is measured in deep-inelastic scattering, for the first time for kaons carrying a large fraction zz of the virtual-photon energy. The data were obtained by the COMPASS collaboration using a 160 GeV muon beam and an isoscalar 66LiD target. [...]
arXiv:1802.00584; CERN-EP-2018-012.- Geneva : CERN, 2018-11-10 - 9 p. - Published in : Phys. Lett. B 786 (2018) 390-398 Article from SCOAP3: PDF; Draft (restricted): PDF; Fulltext: CERN-EP-2018-012 - PDF; 1802.00584 - PDF; arXiv:1802.00584 - PDF;
8.
Measurement of PTPT-weighted Sivers asymmetries in leptoproduction of hadrons / COMPASS Collaboration
The transverse spin asymmetries measured in semi-inclusive leptoproduction of hadrons, when weighted with the hadron transverse momentum PTPT, allow for the extraction of important transverse-momentum-dependent distribution functions. In particular, the weighted Sivers asymmetries provide direct information on the Sivers function, which is a leading-twist distribution that arises from a correlation between the transverse momentum of an unpolarised quark in a transversely polarised nucleon and the spin of the nucleon. [...]
arXiv:1809.02936; CERN-EP-2018-242.- Geneva : CERN, 2019-03 - 20 p. - Published in : Nucl. Phys. B 940 (2019) 34-53 Article from SCOAP3: PDF; Draft (restricted): PDF; Fulltext: CERN-EP-2018-242 - PDF; 1809.02936 - PDF;
9.
Longitudinal double-spin asymmetry Ap1Ap1 and spin-dependent structure function gp1gp1 of the proton at small values of xx and Q2Q2 / COMPASS Collaboration
We present a precise measurement of the proton longitudinal double-spin asymmetry Ap1Ap1 and the proton spin-dependent structure function gp1gp1 at photon virtualities 0.006 (GeV/c)2<Q2<1 (GeV/c)20.006 (GeV/c)2<Q2<1 (GeV/c)2 in the Bjorken xx range of 4×105<x<4×1024×105<x<4×102. The results are based on data collected by the COMPASS Collaboration at CERN using muon beam energies of 160 GeV160 GeV and 200 GeV200 GeV. [...]
arXiv:1710.01014; CERN-EP-2017-263.- Geneva : CERN, 2018-06-10 - 9 p. Article from SCOAP3: PDF; Draft (restricted): PDF; Fulltext: CERN-EP-2017-263 - PDF; arXiv:1710.01014 - PDF;
10.
Search for muoproduction of X(3872)X(3872) at COMPASS and indication of a new state ˜X(3872)˜X(3872) / COMPASS Collaboration
We have observed exclusive production of the exotic X(3872)X(3872) hadron in the reaction μ+ Nμ+(J/ψπ+π)π± N using COMPASS data collected with incoming muons of 160~GeV/c and 200~GeV/c momentum. The statistical significance of the X(3872) signal is 6σ. [...]
arXiv:1707.01796; CERN-EP-2017-165.- Geneva : CERN, 2018-08-10 - 7 p. - Published in : Phys. Lett. B 783 (2018) 334-340 Article from SCOAP3: PDF; Draft (restricted): PDF; Fulltext: CERN-EP-2017-165 - PDF; SCOAP3 Fulltext - PDF; arXiv:1707.01796 - PDF;

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