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Search for pair production of heavy particles decaying to a top quark and a gluon in the lepton+jets final state in proton–proton collisions at $$\sqrt{s}=13\,\text {Te}\hspace{-.08em}\text {V} $$

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  • معلومة اضافية
    • Contributors:
      Null, Null; Hayrapetyan, A.; Tumasyan, A.; Adam, W.; Andrejkovic, J. W.; Benato, L.; Bergauer, T.; Chatterjee, S.; Damanakis, K.; Dragicevic, M.; Hussain, P. S.; Jeitler, M.; Krammer, N.; Li, A.; Liko, D.; Mikulec, I.; Schieck, J.; Schöfbeck, R.; Schwarz, D.; Sonawane, M.; Waltenberger, W.; Wulz, C. -E.; Janssen, T.; Laer, T. Van; Mechelen, P. Van; Breugelmans, N.; D'Hondt, J.; Dansana, S.; De Moor, A.; Delcourt, M.; Heyen, F.; Lowette, S.; Makarenko, I.; Müller, D.; Tavernier, S.; Tytgat, M.; Onsem, G. P. Van; Putte, S. Van; Vannerom, D.; Bilin, B.; Clerbaux, B.; Das, A. K.; De Bruyn, I.; De Lentdecker, G.; Evard, H.; Favart, L.; Gianneios, P.; Jaramillo, J.; Khalilzadeh, A.; Khan, F. A.; Lee, K.; Malara, A.; Paredes, S.; Shahzad, M. A.; Thomas, L.; Bemden, M. Vanden; Velde, C. Vander; Vanlaer, P.; De Coen, M.; Dobur, D.; Gokbulut, G.; Hong, Y.; Knolle, J.; Lambrecht, L.; Marckx, D.; Amarilo, K. Mota; Skovpen, K.; Bossche, N. Van Den; Van Der Linden, J.; Wezenbeek, L.; Benecke, A.; Bethani, A.; Bruno, G.; Caputo, C.; De Favereau De Jeneret, J.; Delaere, C.; Donertas, I. S.; Giammanco, A.; Guzel, A. O.; Jain, Sa.; Lemaitre, V.; Lidrych, J.; Mastrapasqua, P.; Tran, T. T.; Turkcapar, S.; Alves, G. A.; Coelho, E.; Silva, G. Correia; Hensel, C.; De Oliveira, T. Meneze; Herrera, C. Mora; Teles, P. Rebello; Soeiro, M.; Manganote, E. J. Tonelli; Pereira, A. Vilela; Júnior, W. L. Aldá; Filho, M. Barroso Ferreira; Malbouisson, H. Brandao; Carvalho, W.; Chinellato, J.
    • الموضوع:
      2025
    • Collection:
      Scuola Normale Superiore: CINECA IRIS
    • نبذة مختصرة :
      A search is presented for the pair production of new heavy resonances, each decaying into a top quark (t) or antiquark and a gluon (g). The analysis uses data recorded with the CMS detector from proton-proton collisions at a center-of-mass energy of 13 TeV at the LHC, corresponding to an integrated luminosity of 138 fb(-1). Events with one muon or electron, multiple jets, and missing transverse momentum are selected. After using a deep neural network to enrich the data sample with signal-like events, distributions in the scalar sum of the transverse momenta of all reconstructed objects are analyzed in the search for a signal. No significant deviations from the standardmodel prediction are found. Upper limits at 95% confidence level are set on the product of cross section and branching fraction squared for the pair production of excited top quarks in the t* -> tg decay channel. The upper limits range from 120 to 0.8 fb for a t* with spin-1/2 and from 15 to 1.0 fb for a t* with spin-3/2. These correspond to mass exclusion limits up to 1050 and 1700 GeV for spin-1/2 and spin-3/2 t* particles, respectively. These are the most stringent limits to date on the existence of t* -> tg resonances.
    • Relation:
      info:eu-repo/semantics/altIdentifier/pmid/40152191; info:eu-repo/semantics/altIdentifier/wos/WOS:001458700100001; volume:85; issue:3; numberofpages:29; journal:EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS; https://hdl.handle.net/11384/154955
    • الرقم المعرف:
      10.1140/epjc/s10052-024-13729-y
    • الدخول الالكتروني :
      https://hdl.handle.net/11384/154955
      https://doi.org/10.1140/epjc/s10052-024-13729-y
    • Rights:
      info:eu-repo/semantics/openAccess
    • الرقم المعرف:
      edsbas.2BCD604E