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    Testing the technicolor interpretation of the CDF dijet excess at the 8-TeV LHC

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    Date Issued
    2012-10-09
    Publisher Version
    10.1103/PhysRevD.86.074015
    Author(s)
    Eichten, Estia
    Lane, Kenneth D.
    Martin, Adam
    Pilon, Eric
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    Permanent Link
    https://hdl.handle.net/2144/40022
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    First author draft
    Citation (published version)
    Estia Eichten, Kenneth Lane, Adam Martin, Eric Pilon. 2012. "Testing the technicolor interpretation of the CDF dijet excess at the 8-TeV LHC." PHYSICAL REVIEW D, Volume 86, Issue 7, 16 pp. https://doi.org/10.1103/PhysRevD.86.074015
    Abstract
    Under the assumption that the dijet excess seen by the CDF Collaboration near 150 GeV in Wjj production is due to the lightest technipion of the low-scale technicolor (LSTC) process ρT→WπT, we study its observability in LHC detectors for √s=8  TeV and ∫Ldt=20  fb−1. We describe interesting new kinematic tests that can provide independent confirmation of this LSTC hypothesis. We show that cuts similar to those employed by CDF, and recently by ATLAS, cannot confirm the dijet signal. We propose cuts tailored to the LSTC hypothesis and its backgrounds at the LHC that may reveal ρT→ℓνjj. Observation of the isospin-related channel ρ±T→Zπ±T→ℓ+ℓ−jj and of ρ±T→WZ in the ℓ+ℓ−ℓ±νℓ and ℓ+ℓ−jj modes will be important confirmations of the LSTC interpretation of the CDF signal. The ZπT channel is experimentally cleaner than WπT and its rate is known from WπT by phase space. It can be discovered or excluded with the collider data expected by the end of 2012. The WZ→3ℓν channel is cleanest of all and its rate is determined from WπT and the LSTC parameter sinχ. This channel and WZ→ℓ+ℓ−jj are discussed as a function of sinχ.
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    © 2012 American Physical Society
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    • CAS: Physics: Scholarly Papers [346]
    • BU Open Access Articles [3664]

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