• Measurement of the cross-section of $Z\gamma$ and limits on ADD models at the CMS with 7 TeV Large Hadron Collider data

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      https://www.ias.ac.in/article/fulltext/pram/079/04/0925-0928

    • Keywords

       

      Large Hadron Collider; compact muon solenoid; initial-state radiation; final-state radiation; Arkani-Hamed–Dimopoulos–Dvali; monophoton; graviton; extra dimension.

    • Abstract

       

      The measurement of the inclusive cross-section for $Z\gamma$ production at LHC with 7 TeV proton–proton collision is presented. The electron and muon decay modes are used to reconstruct the 𝑍 boson. The total cross-section is measured for photon transverse energy greater than 10 GeV and with photon and charged lepton separation in the pseudorapidity-azimuthal angle plane greater than 0.7. This study is extended by a measurement of $Z(\nu \bar{\nu})\gamma$ cross-section. A search is performed for extra dimensions in the Arkani-Hamed, Dimopoulos, Dvali framework using the final state of a graviton and photon. The limits are extended with MD $> 1.25–1.31$ TeV for $n = 2-6$. The measurement is found to be in agreement with the Standard Model prediction.

    • Author Affiliations

       

      Sandhya Jain1

      1. Saha Institute of Nuclear Physics, 1/AF Bidhan Nagar, Kolkata 700 064, India
    • Dates

       
  • Pramana – Journal of Physics | News

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