Mostrando 14,741 - 14,760 Resultados de 16,682 Para Buscar '"quarks"', tiempo de consulta: 0.51s Limitar resultados
  1. 14741
    por Bahmani, Marzieh
    Publicado 2023
    “…In this talk, I present an overview of the recent searches conducted at the ATLAS experiment, specifically focusing on the searches for an additional spin-0 boson with a mass below 125 GeV, new scalar resonance in flavour-changing neutral-current top-quark decays, pseudo-scalar Higgs boson and doubly charged Higgs boson production. …”
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  2. 14742
    por Wang, Xiaoning
    Publicado 2023
    “…The initial QGP geometry of the quark-gluon plasma (QGP) is manifested as azimuthal anisotropy in final state particles of a nuclear collision in the plane transverse to the beam direction. …”
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  3. 14743
    por Amsler, Claude
    Publicado 1998
    “…The measured rates for annihilation into various two-body channels and for electromagnetic processes have been used to test simple models for the annihilation mechanism based on the quark internal structure of hadrons. From three-body annihilations three scalar mesons, a0(1450), f0(1370) and f0(1500) have been established in various decay modes. …”
    Enlace del recurso
    Enlace del recurso
  4. 14744
    por CERN. Geneva
    Publicado 1999
    “…However, with new machine ideas opening up the possibility of intense neutrino sources, this area of research could go on to reveal further insights into the weakly $9 interacting particles, thereby complementing the detailed knowledge of the quark sector. Muons, which are heavy relatives of the electron, come in positively and negatively charged versions with properties that are broadly similar to $9 those of electrons. …”
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  5. 14745
    por Foka, P Y
    Publicado 1999
    “…Their relevance concerning the observation and characterisation of an extended equilibrated deconfined state of partonic matter, the quark gluon plasma (QGP) is discussed. Available data support that sufficient energy density for a phase transition of normal hadronic matter to a deconfined state is reached at the early stage of such collisions. …”
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  6. 14746
    por Schükraft, Jürgen
    Publicado 2000
    “…This overview, which is the combined write-up of talks given at this conference will sketch a rough picture of the heavy ion program at current and future machines and concentrate on a few important topics, in particular the question if current results show any of the signs predicted for the phase transition between normal hadronic matter and the quark-gluon plasma. (14 refs).…”
    Enlace del recurso
    Enlace del recurso
  7. 14747
    por Fanebust, K
    Publicado 2002
    “…In particular the onset of a Quark-Gluon Plasma phase in a heavy ion collision is expected to enhance the hyperon yield with respect to normal hadronic interactions. \\ \\WA97 aims to measure the spectra of strange particles and in particular of hyperons and antihyperons produced in ultrarelativistic lead-lead interactions and to compare them with those from proton initiated reactions. …”
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  8. 14748
    por Biscarat, C
    Publicado 2001
    “…The W mass reconstruction method, based on the well-known W mass and the very large statistics of W -> jj decays from top quark decay, and the pT-balance method, based on events containing a Z boson decaying to leptons balanced by one high-pT jet, should provide adequate tools to achieve the required overall 1% uncertainty.…”
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  9. 14749
    por Moraes, A M
    Publicado 2003
    “…The extreme brightness (luminosity) of the LHC beam crossings will allow significant improvements in the measurement of the mass of the top quark and the W boson. A significant improvement in the determination of the coupling in three vector boson vertices will be possible. …”
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  10. 14750
    por Gounaris, George J, Verganelakis, A
    Publicado 1975
    “…The authors assume the existence of a series of mesons phi /sub cn/ with a cc charmed quark structure and masses m( phi /sub cn/)/sup 2/=m ( phi /sub c/)/sup 2/(1+ alpha /sub c/n), n=0,1,2..., with the 3.1, 3.7, and 4.1 GeV states the first three in the series. …”
    Enlace del recurso
    Enlace del recurso
  11. 14751
    “…The main goal of the detector is the identification of kaons and pions for b-quark (B-meson) flavour tagging. Construction of the detector has been described as well as proposals on detector design changes to improve its time resolution. …”
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  12. 14752
    por Da Silva, W
    Publicado 2004
    “…Heavy b and c quark production in gamma gamma collisions has been measured through semileptonic decays with the DELPHI detector at LEP. …”
    Enlace del recurso
    Enlace del recurso
  13. 14753
    por Kabuss, E M
    Publicado 2003
    “…Currently, the main emphasis lies on the measurement of the gluon polarisation and a study of transverse quark distributions. For this purpose we use a newly built 2-stage large acceptance spectrometer supplemented by particle identification via RICH, calorimetry and muon identification. …”
    Enlace del recurso
    Enlace del recurso
  14. 14754
    por Fionda, F
    Publicado 2013
    “…The ALICE detector provides excellent capabilities to study heavy quark (i.e. charm and beauty) production in proton{proton (pp) and heavy{ion collisions (AA) at the Large Hadron Collider (LHC). …”
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  15. 14755
    por Mastroserio, Annalisa
    Publicado 2014
    “…The charmonium states provide essential information on the properties of a new state of matter predicted to be formed at extreme energy densities and temperatures, the Quark Gluon Plasma (QGP). ALICE is an experiment at LHC dedicated to the study of the QGP state in heavy ion collisions. …”
    Enlace del recurso
    Enlace del recurso
  16. 14756
    por Schöfbeck, Robert
    Publicado 2015
    “…A large number of groundbreaking results were obtained from the analysis of this dataset, among them the discovery of the Higgs boson and precision measurements of important Standard Model parameters, for example the mass of the top quark. Subtle processes like the production of a Z boson by fusion of two W bosons have been measured for the first time. …”
    Enlace del recurso
    Enlace del recurso
  17. 14757
    por St Denis, Richard
    Publicado 2015
    “…Evidence for production of the Higgs boson by vector boson fusion is obtained in a model-independent approach by comparing the signal strengths μ of vector boson fusion and production associated with a vector boson to that for gluon fusion including associated production of top quark pairs: which is 3.3 Gaussian standard deviations from zero.…”
    Enlace del recurso
    Enlace del recurso
  18. 14758
    por Kouznetsov, Oleg M
    Publicado 2014
    “…The COMPASS results on quark and gluon helicities are discussed, as well as results on transverse spin and transverse momentum effects in semi-inclusive deeply inelastic scattering. …”
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  19. 14759
    por Lazareva, T V
    Publicado 2017
    “…Such processes could be either a result of hard parton collisions with some large-density multi-quark configuration or of the formation of heavy baryonic resonances. …”
    Enlace del recurso
    Enlace del recurso
  20. 14760
    por Lakomov, Igor
    Publicado 2016
    “…ALICE is dedicated to the study of the strongly interacting matter, the so-called Quark-Gluon Plasma (QGP), formed in heavy-ion collisions at the LHC. …”
    Enlace del recurso
    Enlace del recurso
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