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Article overview
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$Z'$ discovery potential at the LHC in the minimal $B-L$ extension of the Standard Model | | Lorenzo Basso
; Alexander Belyaev
; Stefano Moretti
; Giovanni Marco Pruna
; Claire H. Shepherd-Themistocleous
; | | Date: |
18 Feb 2010 | | Abstract: | We present the Large Hadron Collider (LHC) discovery potential in the $Z’$
sector of a $U(1)_{B-L}$ enlarged Standard Model (that also includes three
heavy Majorana neutrinos and an additional Higgs boson) for $sqrt{s}=7$, 10
and 14 TeV centre-of-mass (CM) energies, considering both the $Z’_{B-L} o
e^+e^-$ and $Z’_{B-L} o mu^+mu^-$ decay channels. Electrons present a higher
sensitivity to smaller couplings at small $Z’_{B-L}$ masses than the muon
channel. Also, the resolutions achievable might allow a measure of the
$Z’_{B-L}$ width, for smaller masses in the case of electrons in the final
state. The run of the LHC at $sqrt{s}=7$ TeV, assuming at most $int
mathcal{L} sim 1$ fb$^{-1}$, will be able to give similar results to those
that will be available soon at the Tevatron in the lower mass region, and to
extend them for a heavier $M_{Z’}$. A run at $sqrt{s}=10$ TeV, if performed,
will be able to further extend the reach of such a $Z’_{B-L}$ boson to higher
masses (up to 1.6 TeV for 1 fb$^{-1}$). Finally, the run at 14 TeV is needed to
fully probe the parameter space and its potential is comparable in scope to
that of a future TeV scale Linear Collider (LC). If no evidence is found in any
energy configuration, 95% C.L. limits can be determined, and, given their
better resolution, the limits from electrons will always be more stringent than
those from muons. | | Source: | arXiv, 1002.3586 | | Services: | Forum | Review | PDF | Favorites | |
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