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Статті в журналах з теми "LHC CMS Charge asymmetry top quark"
Chwalek, Thorsten, and Frédéric Déliot. "Top Quark Asymmetries." Universe 8, no. 12 (November 25, 2022): 622. http://dx.doi.org/10.3390/universe8120622.
Повний текст джерелаSCHILLING, FRANK-PETER. "TOP QUARK PHYSICS AT THE LHC: A REVIEW OF THE FIRST TWO YEARS." International Journal of Modern Physics A 27, no. 17 (June 26, 2012): 1230016. http://dx.doi.org/10.1142/s0217751x12300165.
Повний текст джерелаDel Duca, Vittorio, and Eric Laenen. "Top physics at the LHC." International Journal of Modern Physics A 30, no. 35 (December 20, 2015): 1530063. http://dx.doi.org/10.1142/s0217751x1530063x.
Повний текст джерелаShaw, Kate. "Top Quark Charge Asymmetry Measurement with ATLAS at the LHC." Journal of Physics: Conference Series 452 (July 30, 2013): 012058. http://dx.doi.org/10.1088/1742-6596/452/1/012058.
Повний текст джерелаMaltoni, F., M. L. Mangano, I. Tsinikos, and M. Zaro. "Top-quark charge asymmetry and polarization intt¯W±production at the LHC." Physics Letters B 736 (September 2014): 252–60. http://dx.doi.org/10.1016/j.physletb.2014.07.033.
Повний текст джерелаRubbo, Francesco. "Top quark pair properties: spin correlation, charge asymmetry and complex final states at LHC in ATLAS." EPJ Web of Conferences 60 (2013): 16013. http://dx.doi.org/10.1051/epjconf/20136016013.
Повний текст джерелаAlvarez, Ezequiel, Aurelio Juste, Manuel Szewc, and Tamara Vazquez Schroeder. "Topping-up multilepton plus b-jets anomalies at the LHC with a Z′ boson." Journal of High Energy Physics 2021, no. 5 (May 2021). http://dx.doi.org/10.1007/jhep05(2021)125.
Повний текст джерелаKnapen, Simon, Yue Zhao, and Matthew J. Strassler. "Diagnosing the top-quark angular asymmetry using LHC intrinsic charge asymmetries." Physical Review D 86, no. 1 (July 12, 2012). http://dx.doi.org/10.1103/physrevd.86.014013.
Повний текст джерелаHagiwara, Kaoru, and Junya Nakamura. "Diquark contributions to top quark charge asymmetry at the Tevatron and LHC." Journal of High Energy Physics 2013, no. 2 (February 2013). http://dx.doi.org/10.1007/jhep02(2013)100.
Повний текст джерелаTumasyan, A., W. Adam, J. W. Andrejkovic, T. Bergauer, S. Chatterjee, M. Dragicevic, A. Escalante Del Valle, et al. "Search for single production of a vector-like T quark decaying to a top quark and a Z boson in the final state with jets and missing transverse momentum at $$ \sqrt{s} $$ = 13 TeV." Journal of High Energy Physics 2022, no. 5 (May 2022). http://dx.doi.org/10.1007/jhep05(2022)093.
Повний текст джерелаДисертації з теми "LHC CMS Charge asymmetry top quark"
Rubbo, Francesco. "Measurements of the charge asymmetry in top quark pair production at the LHC with the ATLAS detector." Doctoral thesis, Universitat Autònoma de Barcelona, 2014. http://hdl.handle.net/10803/284972.
Повний текст джерелаThe top quark, discovered in 1995 at the CDF and D0 experiments at Fermilab’s Tevatron proton-antiproton collider, is the heaviest known elementary particle, with a mass comparable to the atomic mass of tungsten. This property, not explained by the Standard Model (SM), gives a special role to the top quark in the context of theoretical models beyond the Standard Model. Many of the models predict that new particles would preferably couple with the top quark, due to its high mass. After a decade of studies at the Tevatron (2001-2011), no signs of new physics have been discovered in the properties of the top quark, with the exception of the forward-backward asymmetry in top quark pair production, where an excess of about two standard deviations from the SM prediction has been found. This measurement shows that, in average, the top quark in top-antitop events is produced in the proton direction more often than the antitop quark. Even though the SM predicts a small forward-backward asymmetry due to the strong interaction, the presence of new heavy particles contributing to the top-antitop pair production could cause the observed excess. Unfortunately the Tevatron operation terminated on September 2012, and the analysis of the full datasets collected by the CDF and D0 experiments did not provide a final answer with respect to this anomaly. This dissertation describes the precise measurement of the charge asymmetry AC in top-antitop pair production in proton-proton collisions at LHC, using the full dataset collected with the ATLAS detector at center-of-mass energies of 7 TeV and 8 TeV, corresponding to integrated luminosities of about 5 fb-1 and 20 fb-1, respectively. The LHC charge asymmetry, related to the Tevatron forward-backward asymmetry, is a complementary probe of the same new physics effects that could be responsible for the Tevatron excess. The lepton+jets channel is considered to perform inclusive and differential measurements of the charge asymmetry in top quark pair events. The kinematics of the top-antitop pair is reconstructed from the semileptonic decay products, and a Bayesian unfolding procedure is employed to estimate AC at the parton level. Using the dataset at 7 TeV, a 1% precision is achieved for the inclusive measurement. Differential AC measurements as a function of the invariant mass, the rapidity and the transverse momentum of the top-antitop pair are also presented. Using the dataset at 8 TeV, a 0.5% precision is achieved for the inclusive measurement, and the differential AC measurement as a function of the invariant mass of the top-antitop pair is performed as well. All measurements are found to be consistent with the SM predictions.
Roscher, Frank [Verfasser], and T. [Akademischer Betreuer] Müller. "Charge Asymmetry Measurements in Top Quark Pair Production at sqrt(s) = 8 TeV with the CMS Experiment / Frank Roscher. Betreuer: T. Müller." Karlsruhe : KIT-Bibliothek, 2015. http://d-nb.info/1079594949/34.
Повний текст джерелаRichardson, Clint Allan. "A search for heavy fermionic top quark partners with charge 5/3 decaying to a pair of same-sign leptons with the CMS experiment." Thesis, 2017. https://hdl.handle.net/2144/27478.
Повний текст джерелаТези доповідей конференцій з теми "LHC CMS Charge asymmetry top quark"
Chwalek, Thorsten. "ttbar charge asymmetry at CMS." In 8th International Workshop on Top Quark Physics. Trieste, Italy: Sissa Medialab, 2016. http://dx.doi.org/10.22323/1.257.0064.
Повний текст джерелаChwalek, Thorsten. "Measurement of the charge asymmetry in top quark pair production in pp collisions (CMS)." In 36th International Conference on High Energy Physics. Trieste, Italy: Sissa Medialab, 2013. http://dx.doi.org/10.22323/1.174.0215.
Повний текст джерелаRoscher, Frank Sebastian. "Measurements of the top quark properties in ttbar production at the LHC (includes charge asymmetry, top quark polarization, spin correlations and tt+V)." In The European Physical Society Conference on High Energy Physics. Trieste, Italy: Sissa Medialab, 2016. http://dx.doi.org/10.22323/1.234.0301.
Повний текст джерела