Search Results - "quantum chromodynamics"

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  1. 1
    Effect of colorlessness condition on phase transition from Hadronic Gas to partonic plasma

    Effect of colorlessness condition on phase transition from Hadronic Gas to partonic plasma by Abdul Raheem Ahmed, Mohamed Abdul Malek, Cherif, S., Ladrem, M., Zainuddin, Hishamuddin, Mohd Shah, Nurisya

    Published 2018
    “…One of the most important phase transition in physics is the Deconfinement Phase Transition in thermal Quantum ChromoDynamics. Due to the confinement property, we study the effect of colorlessness condition during the Deconfinement Phase Transition from a Hadronic Gas to a Quark-Gluon Plasma. …”
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  2. 2
    A New Look at the Electroweak Interactions of Hadrons

    A New Look at the Electroweak Interactions of Hadrons by Chia, Swee Ping

    Published 2008
    “…Quarks are subjected to strong forces which are described by quantum chromodynamics (QCD). Because quarks are tightly bound in hadrons by QCD forces, calculations obtained at the quark level cannot be extended, in a straight-forward way, to physical processes involving hadrons. …”
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  3. 3
    Observation of top quark production in proton-nucleus collisions

    Observation of top quark production in proton-nucleus collisions by Sirunyan, A. M., Tumasyan, A. R., Adam, Wolfgang, Asilar, Ece, Bergauer, Thomas, Brandstetter, Johannes, Md. Ali, Mohd. Adli

    Published 2017
    “…The measured cross section is σtt=45±8 nb, consistent with predictions from perturbative quantum chromodynamics.…”
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  4. 4
    Measurement of the Lambda(b) polarization and angular parameters in Lambda(b) -> J/psi Lambda decays from pp collisions at root s=7 and 8 TeV

    Measurement of the Lambda(b) polarization and angular parameters in Lambda(b) -> J/psi Lambda decays from pp collisions at root s=7 and 8 TeV by Sirunyan, A. M., Tumasyan, A. R., Adam, Wolfgang, Ambrogi, Federico, Asilar, Ece, Md. Ali, Mohd. Adli

    Published 2018
    “…The measurements are compared to various theoretical predictions, including those from perturbative quantum chromodynamics.…”
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  5. 5
    Measurement of the Λb polarization and angular parameters in Λb →j /ψ Λ decays from pp collisions at s =7 and 8 TeV MEASUREMENT of the Λb POLARIZATION ⋯ A. M. SIRUNYAN et al.

    Measurement of the Λb polarization and angular parameters in Λb →j /ψ Λ decays from pp collisions at s =7 and 8 TeV MEASUREMENT of the Λb POLARIZATION ⋯ A. M. SIRUNYAN et al.... by Sirunyan, A. M., Tumasyan, A. R., Adam, Wolfgang, Ambrogi, Federico, Asilar, Ece, Md. Ali, Mohd. Adli

    Published 2018
    “…The measurements are compared to various theoretical predictions, including those from perturbative quantum chromodynamics.…”
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  6. 6
    Measurements of triple-differential cross sections for inclusive isolated-photon plus jet events in pp collisions at root s=8 TeV

    Measurements of triple-differential cross sections for inclusive isolated-photon plus jet events in pp collisions at root s=8 TeV by Sirunyan, A. M., Tumasyan, A. R., Adam, Wolfgang, Ambrogi, Federico, Asilar, Ece, Md. Ali, Mohd. Adli

    Published 2019
    “…The measurements are compared to next-to-leading order perturbative quantum chromodynamics calculations, which reproduce the data within uncertainties.…”
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  7. 7
    Search for new physics with dijet angular distributions in proton-proton collisions at √s=13 TeV

    Search for new physics with dijet angular distributions in proton-proton collisions at √s=13 TeV by Sirunyan, A. M., Tumasyan, A. R., Adam, Wolfgang, Asilar, Ece, Bergauer, Thomas, Md. Ali, Mohd. Adli

    Published 2017
    “…The distributions are found to be in agreement with predictions from perturbative quantum chromodynamics that include electroweak corrections. …”
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  8. 8
    Measurement of the Z/gamma* -> tau tau cross section in pp collisions at root s=13 TeV and validation of tau lepton analysis techniques

    Measurement of the Z/gamma* -> tau tau cross section in pp collisions at root s=13 TeV and validation of tau lepton analysis techniques by Sirunyan, A. M., Tumasyan, A. R., Adam, Wolfgang, Ambrogi, Federico, Asilar, Ece, Md. Ali, Mohd. Adli

    Published 2018
    “…The product of the inclusive cross section and branching fraction is measured to be σ (pp → Z/γ ∗+X) B(Z/γ ∗ → ττ) = 1848 ± 12 (stat) ± 67 (syst + lumi) pb, in agreement with the standard model expectation, computed at next-to-next-to-leading order accuracy in perturbative quantum chromodynamics. The measurement is used to validate new analysis techniques relevant for future measurements of τ lepton production. …”
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  9. 9
    Constraining gluon distributions in nuclei using dijets in proton-proton and proton-lead collisions at sNN =5.02 TeV

    Constraining gluon distributions in nuclei using dijets in proton-proton and proton-lead collisions at sNN =5.02 TeV by Sirunyan, A. M., Tumasyan, A. R., Adam, Wolfgang, Ambrogi, Federico, Asilar, Ece, Md. Ali, Mohd. Adli

    Published 2018
    “…The ratios of the pPb and pp distributions are compared to next-to-leading order perturbative quantum chromodynamics calculations with unbound nucleon and nuclear parton distribution functions (PDFs). …”
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  10. 10
    Measurement of exclusive Upsilon photoproduction from protons in pPb collisions at root sNN=5.02 Tev

    Measurement of exclusive Upsilon photoproduction from protons in pPb collisions at root sNN=5.02 Tev by Sirunyan, A. M., Tumasyan, A. R., Adam, Wolfgang, Ambrogi, Federico, Asilar, Ece, Md. Ali, Mohd. Adli

    Published 2019
    “…The data are compared to theoretical predictions based on perturbative quantum chromodynamics and to previous measurements.…”
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  11. 11
    Azimuthal separation in nearly back-to-back jet topologies in inclusive 2-and 3-jet events in pp collisions at root s=13TeV

    Azimuthal separation in nearly back-to-back jet topologies in inclusive 2-and 3-jet events in pp collisions at root s=13TeV by Sirunyan, A. M., Tumasyan, A. R., Adam, Wolfgang, Ambrogi, Federico, Asilar, Ece, Md. Ali, Mohd. Adli

    Published 2019
    “…Predictions based on calculations using matrix elements at leading-order and next-to-leading-order accuracy in perturbative quantum chromodynamics supplemented with leading-log parton showers and hadronization are generally in agreement with the measurements. …”
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  12. 12
    Measurement of electroweak-induced production of Wγ with two jets in pp collisions at √s=8 TeV and constraints on anomalous quartic gauge couplings

    Measurement of electroweak-induced production of Wγ with two jets in pp collisions at √s=8 TeV and constraints on anomalous quartic gauge couplings by Khachatryan, Vardan, Sirunyan, A.M., Tumasyan, A. R., Adam, Wolfgang, Asilar, Ece, Md. Ali, Mohd. Adli

    Published 2017
    “…The total cross section for Wγ in association with two jets in the same fiducial region is measured to be 23.2 ± 4.3(stat) ± 1.7(syst) ± 0.6(lumi) fb, which is consistent with the standard model prediction from the combination of electroweakand quantum chromodynamics-induced processes. No deviations are observed from the standard model predictions and experimental limits on anomalous quartic gauge couplings fM,0−7/Λ 4 , fT,0−2/Λ 4 , and fT,5−7/Λ 4 are set at 95% confidence level.…”
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  13. 13
    Search for new particles decaying to a jet and an emerging jet

    Search for new particles decaying to a jet and an emerging jet by Sirunyan, A. M., Tumasyan, A. R., Adam, Wolfgang, Ambrogi, Federico, Asilar, Ece, Md. Ali, Mohd. Adli

    Published 2019
    “…The dark quark is charged only under a new quantum-chromodynamics-like force, and forms an “emerging jet” via a parton shower, containing long-lived dark hadrons that give rise to displaced vertices when decaying to standard model hadrons. …”
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  14. 14
    Measurements of tt¯differential cross sections in proton-proton collisions at √s=13 TeV using events containing two leptons

    Measurements of tt¯differential cross sections in proton-proton collisions at √s=13 TeV using events containing two leptons by Sirunyan, A. M., Tumasyan, A. R., Adam, Wolfgang, Ambrogi, Federico, Asilar, Ece, Md. Ali, Mohd. Adli

    Published 2019
    “…All results are compared with standard model predictions from Monte Carlo simulations with next-to-leading-order (NLO) accuracy in quantum chromodynamics (QCD) at matrix-element level interfaced to parton-shower simulations. …”
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  15. 15
    Study of dijet events with a large rapidity gap between the two leading jets in pp collisions at √s=7TeV

    Study of dijet events with a large rapidity gap between the two leading jets in pp collisions at √s=7TeV by Sirunyan, A. M., Tumasyan, A. R., Adam, Wolfgang, Asilar, Ece, Bergauer, Thomas, Md. Ali, Mohd. Adli

    Published 2018
    “…The data are compared to previous measurements at the Tevatron, and to perturbative quantum chromodynamics calculations based on the Balitsky–Fadin–Kuraev–Lipatov evolution equations, including different models of the nonperturbative gap survival probability…”
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  16. 16
    Measurement of normalized differential t t ¯ cross sections in the dilepton channel from pp collisions at √s=13 TeV

    Measurement of normalized differential t t ¯ cross sections in the dilepton channel from pp collisions at √s=13 TeV by Sirunyan, A. M., Tumasyan, A. R., Adam, Wolfgang, Ambrogi, Federico, Asilar, Ece, Md. Ali, Mohd. Adli

    Published 2018
    “…The results are compared to several Monte Carlo generators that implement calculations up to next-to-leading order in perturbative quantum chromodynamics interfaced with parton showering, and also to fixed-order theoretical calculations of top quark pair production up to next-to-next-to-leading order.…”
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  17. 17
    Lateral distribution of muons in IceCube cosmic ray events

    Lateral distribution of muons in IceCube cosmic ray events by Abbasi, R., Abdou, Y., Ackermann, M., Adams, J., Aguilar, J., Ahlers, M., Altmann, D., Andeen, K., Auffenberg, J., Bai, X., Baker, M., Barwick, S., Baum, V., Bay, R., Beattie, K., Beatty, J., Bechet, S., Becker Tjus, J., Becker, K., Bell, M., Benabderrahmane, M., Benzvi, S., Berdermann, J., Berghaus, P., Berley, D., Bernardini, E., Bertrand, D., Besson, D., Bindig, D., Bissok, M., Blaufuss, E., Blumenthal, J., Boersma, D., Bohm, C., Bose, D., Böser, S., Botner, O., Brayeur, L., Brown, A., Bruijn, R., Brunner, J., Buitink, S., Carson, Michael, Casey, J., Casier, M., Chirkin, D., Christy, B., Clevermann, F., Cohen, S., Cowen, D., Cruz Silva, A., Danninger, M., Daughhetee, J., Davis, J., De Clercq, C., Descamps, F., Desiati, P., De Vries-Uiterweerd, G., Deyoung, T., Díaz-Vélez, J., Dreyer, J., Dumm, J., Dunkman, M., Eagan, R., Eisch, J., Ellsworth, R., Engdegård, O., Euler, S., Evenson, P., Fadiran, O., Fazely, A., Fedynitch, A., Feintzeig, J., Feusels, T., Filimonov, K., Finley, C., Fischer-Wasels, T., Flis, S., Franckowiak, A., Franke, R., Frantzen, K., Fuchs, T., Gaisser, T., Gallagher, J., Gerhardt, L., Gladstone, L., Glüsenkamp, T., Goldschmidt, A., Goodman, J., Góra, D., Grant, D., Groß, A., Grullon, S., Gurtner, M., Ha, C., Haj Ismail, A.

    Published 2013
    “…The separation distribution shows a transition to a power law at large values, indicating the presence of a hard pT component that can be described by perturbative quantum chromodynamics. However, the rates and the zenith angle distributions of these events are not well reproduced with the cosmic ray models tested here, even those that include charm interactions. …”
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  18. 18
    Measurement of the top quark polarization and t(t)over-barspin correlations using dilepton final states in proton-proton collisions at root s=13 TeV

    Measurement of the top quark polarization and t(t)over-barspin correlations using dilepton final states in proton-proton collisions at root s=13 TeV by Sirunyan, A. M., Tumasyan, A. R., Adam, Wolfgang, Ambrogi, Federico, Asilar, Ece, Md. Ali, Mohd. Adli

    Published 2019
    “…The measured distributions and extracted coefficients are compared with standard model predictions from simulations at next-to-leadingorder (NLO) accuracy in quantum chromodynamics (QCD), and from NLO QCD calculations including electroweak corrections. …”
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  19. 19
    Measurement of inclusive jet cross sections in pp and PbPb collisions at s NN =2.76 TeV

    Measurement of inclusive jet cross sections in pp and PbPb collisions at s NN =2.76 TeV by Khachatryan, Vardan, Sirunyan, A. M., Tumasyan, A. R., Adam, Wolfgang, Asilar, Ece, Md. Ali, Mohd. Adli

    Published 2017
    “…Next-to-leading-order quantum chromodynamic calculations with nonperturbative corrections are found to overpredict jet production cross sections in pp for small distance parameters. …”
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