Mostrando 15,121 - 15,140 Resultados de 16,682 Para Buscar '"quarks"', tiempo de consulta: 0.76s Limitar resultados
  1. 15121
    por Ehlers, Raymond
    Publicado 2021
    “…Jet substructure provides information about quantum chromodynamics (QCD) and plays an important role in the study of the evolution of the quark-gluon plasma. The ALICE experiment is uniquely suited to provide insight into the smallest splitting angles due to high efficiency in the reconstruction of charged particles. …”
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  2. 15122
    por Ganoti, Paraskevi
    Publicado 2021
    “…In addition, having different masses, quantum numbers and quark content, hadronic resonances carry a wealth of information on different aspects of ion$-$ion collisions, including the processes that determine the shapes of particle momentum spectra, strangeness production, and the possible onset of collective effects in small systems. …”
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  3. 15123
    por Meyer-Conde, Marco
    Publicado 2021
    “…Apart from the absolute cross-section measurements for both processes, COMPASS studies also the target spin (in)dependent azimuthal asymmetries in both channels. Assuming the valence quark-antiquark annihilation to be the main production mechanism, one can interpret the azimuthal asymmetries in terms of convolutions of pion and proton Transverse Momentum Dependent (TMD) Parton Distribution Functions (PDFs). …”
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    Enlace del recurso
  4. 15124
    por Wang, Xiaolin
    Publicado 2022
    “…The LHCb detector is a single-arm forward spectrometer covering the pseudorapidity range 2 < 𝜂 < 5, designed for the study of particles containing bottom or charm quark. The study of exclusive vector meson photoproduction in ultra-peripheral lead-lead collisions is essential to understand physics at low Bjorken x. …”
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  5. 15125
    por Longo, R
    Publicado 2017
    “…In the TMD framework of QCD it is predicted that the two naively time-reversal odd TMD PDFs, i.e. the quark Sivers functions and Boer-Mulders functions, have opposite sign when mea- sured in SIDIS or DY. …”
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    Enlace del recurso
  6. 15126
    por Krivos, Martin
    Publicado 2022
    “…These include multiple measurements of jet production and structure, which probe the dynamics of the hot, dense Quark-Gluon Plasma formed in relativistic nucleus-nucleus collisions. …”
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  7. 15127
    por Sharma, Meenakshi
    Publicado 2023
    “…Several other features that were observed in large collision systems and explained as due to collective phenomena related to the formation of the Quark Gluon Plasma (QGP) are also observed in small systems. …”
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  8. 15128
    por The ATLAS collaboration
    Publicado 2022
    “…This is a collection of plots comparing Monte Carlo simulation of top quark pair events by the ATLAS and CMS experiments. …”
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  9. 15129
    por Das, Prottay
    Publicado 2023
    “…These processes can be studied from the ratios of the yields of resonances to stable particles having same quark content, as a function of system size and comparing with model predictions with and without hadronic interactions.…”
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  10. 15130
    por The ATLAS collaboration
    Publicado 2023
    “…Measurements of both the inclusive and differential production cross-sections of a top-quark-antiquark pair in association with a $W$ boson ($t\bar{t}W$) are presented. …”
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  11. 15131
    por Zuliani, Davide
    Publicado 2022
    “…Namely, a Variational Quantum Classifier is trained and evaluated on fully simulated data of the LHCb experiment, in order to identify jets containing a hadron formed by a $b$ or $\bar{b}$ quark at the moment of production. The jet identification performance of the quantum classifier is compared with a Deep Neural Network using the same input features.…”
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  12. 15132
    por Rosano, Antonina
    Publicado 2022
    “…Measurements of the production of resonances characterized by different lifetimes, masses, quark content, and quantum numbers can be used to explore the different mechanisms that influence the shape of particle momentum spectra, the dynamical evolution and lifetime of the hadronic phase, strangeness production, and collective effects. …”
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  13. 15133
    por Day-Hall, Henry
    Publicado 2023
    “…The recoil of the Z-boson is sensitive to quark and gluon emissions and is used to determine the strong coupling constant in a novel approach. …”
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  14. 15134
  15. 15135
    por Quast, G
    Publicado 2000
    “…Altogether, in combination with measurements of the weak mixing angle at the SLC and the top quark mass at the Tevatron, these results provide stringent test of the Standard Model of the electroweak interaction and constrain its last missing parameter, the mass of the Higgs boson. (19 refs).…”
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    Enlace del recurso
  16. 15136
    por Kaczmarska, A
    Publicado 1999
    “…This note presents an extension of a previous study on the expected performance of b-jet tagging in ATLAS experiment using low-pt electrons from semileptonic b-quark decays. Inner Detector and the EM Calorimeter information is used.The performance is evaluated in terms of the expected hadron rejection versus the electron identification efficiency and the expected suppression of background events versus the acceptance of signal events. …”
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  17. 15137
    “…More realistic performance figures for the detector and a measurement of the pattern recognition capabilities of the algorithms have been obtained from a further study with di-quark jets, including pile-up. The results obtained with the two algorithms, and the two layouts have been compared. …”
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  18. 15138
    “…We consider possible assignments for the D$_{s\J}^+(2632)$, which was recently reported in D$_s^+\eta$ and D$^0$K$^+$ final states by the SELEX Collaboration at Fermilab. The most plausible quark model assignment for this state is the first radial excitation ($2^3\S_1$) of the $c\bar s$ D$_s^*(2112)$, although the predicted mass and strong decay branching fractions for this assignment are not in agreement with the SELEX data. …”
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  19. 15139
    por Chung, Suh-Urk
    Publicado 2015
    “…Both states are likely to be a tetra-quark, i.e. qq¯+qq¯or a gluonic hybrid, a qq¯object with an excited gluon inside it.Section 2 is devoted to a brief discussion of the central production of resonances, which is being investigated by both COMPASS and ALICE collaborations. …”
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    Enlace del recurso
  20. 15140
    por Eller, Philipp
    Publicado 2015
    “…A standard model Higgs boson, radiated off by a leptonically decaying Z boson, is searched for in the b ¯b-quark decay mode by analyzing the full 7+8 TeV LHC dataset recorded with the CMS detector. …”
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