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Spin identification of heavy nonstandard bosons in dilepton and diphoton events at the LHC
High Energy Physics - Phenomenology · Submitted 7 Dec 2010
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim In this case, the spin determination of a peak, requiring the angular analysis of the events, becomes crucial in order to identify the relevant nonstandard source.
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The abstract, sentence by sentence
New Physics scenarios generally predict the existence of very heavy quantum states that can possibly manifest themselves as peaks in the cross sections at the LHC. For values of the parameters in certain domains, different nonstandard models can generate peaks with the same mass and same number of events. In this case, the spin determination of a peak, requiring the angular analysis of the events, becomes crucial in order to identify the relevant nonstandard source. We here discuss, using a particularly suitable symmetrically integrated angular asymmetry applied to Drell-Yan dilepton and diphoton events at LHC, the identification reach on the exchanges in these reactions of the following heavy bosons: spin-2 Randall-Sundrum graviton excitations; spin-1 heavy neutral gauge bosons Z^\prime; and spin-0 SUSY R-parity violating sneutrinos.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | New Physics scenarios generally predict the existence of very heavy quantum states that can possibly manifest themselves as peaks in the cross sections at the LHC. | background 1.00 | 0.04 | 0.03 | hedged possibility 0.93 |
| s1 | For values of the parameters in certain domains, different nonstandard models can generate peaks with the same mass and same number of events. | background 0.86 | 0.08 | 0.04 | asserted 0.62 |
| s2 | In this case, the spin determination of a peak, requiring the angular analysis of the events, becomes crucial in order to identify the relevant nonstandard source. | background 0.77 | 0.06 | 0.11 | asserted 0.99 |
| s3 | We here discuss, using a particularly suitable symmetrically integrated angular asymmetry applied to Drell-Yan dilepton and diphoton events at LHC, the identification reach on the exchanges in these reactions of the following heavy bosons: spin-2 Randall-Sundrum graviton excitations; spin-1 heavy neutral gauge bosons Z^\prime; and spin-0 SUSY R-parity violating sneutrinos. | contribution 0.98 | 0.76 | 0.19 | asserted 0.90 |
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The paper
Original abstract
New Physics scenarios generally predict the existence of very heavy quantum states that can possibly manifest themselves as peaks in the cross sections at the LHC. For values of the parameters in certain domains, different nonstandard models can generate peaks with the same mass and same number of events. In this case, the spin determination of a peak, requiring the angular analysis of the events, becomes crucial in order to identify the relevant nonstandard source. We here discuss, using a particularly suitable symmetrically integrated angular asymmetry applied to Drell-Yan dilepton and diphoton events at LHC, the identification reach on the exchanges in these reactions of the following heavy bosons: spin-2 Randall-Sundrum graviton excitations; spin-1 heavy neutral gauge bosons Z^\prime; and spin-0 SUSY R-parity violating sneutrinos.
Human review
How the literature uses it
2 arXiv papers cite this in 3 sentences
Papers citing it · 1 sentence without a confident label
Compares with it 1 paper
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Analyses with some overlap with ours are contained in [ref] for the case of di-lepton final state.
Telling the spin of the "Higgs boson" at the LHC · Motivations · 0.91
Cites it as background 1 paper
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For a non-exhaustive list of phenomenological studies of $Z'$ in the context of LHC as well as ILC, see reference in [ref] .
Signals of additional Z boson in e+e-\to W+W^- at the ILC with polarized beams · $Z'$ Models · 1.00
What it cites · 16 sentences without a confident label
Uses the method or tool of 4 papers
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This difficulty may be avoided by using as the basic observable for the angular analysis the $z$-evenly integrated center-edge angular asymmetry, defined as [ref] :
Spin identification of the Randall-Sundrum resonance in lepton-pair production at the LHC · Cross sections and center-edge asymmetry · 0.92
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This difficulty may be avoided by using as the basic observable for the angular analysis the $z$-evenly integrated center-edge angular asymmetry, defined as [ref] :
Spin and model identification of Z' bosons at the LHC · Cross sections and center-edge asymmetry · 0.92
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This difficulty may be avoided by using as the basic observable for the angular analysis the $z$-evenly integrated center-edge angular asymmetry, defined as [ref] :
Sneutrino identification in dilepton events at the LHC · Cross sections and center-edge asymmetry · 0.92
Uses data or values from 4 papers
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Figure [ref] shows the expected lowest lying graviton identification domain at 95% CL in the $(M_G,c)$ plane from dilepton events ($l=e,μ$ combined) at 14 TeV with time-integrated luminosities of 10 and 100 $fb^-1$ [ref] .
Spin identification of the Randall-Sundrum resonance in lepton-pair production at the LHC · Spin-2 identification · 0.86
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Current 95% CL experimental limits [ref] are in the range $M_G>600$ GeV (for $c≅0.01$) up to $M_G>1.05$ TeV (for $c≅0.1$).
Search for Randall-Sundrum gravitons in the dielectron and diphoton final states with 5.4 fb-1 of data from ppbar collisions at sqrt(s)=1.96 TeV · RS model with one compactified extra dimension · 0.94
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Current limits on the relevant $λ^'$s are of the order of $10^-2$ [ref] , and the experimental 95% CL lower limits on $M_ν̃$ range from 397 GeV (for $X=10^-4$) to 866 GeV (for $X=10^-2$) [ref] .
A search for high-mass resonances decaying to dimuons at CDF · $R$-parity violating sneutrino exchange · 0.95
Cites as background 4 papers
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The simplest version [ref] , originally proposed as a rationale for the gauge hierarchy problem $M_EW≪M_Pl$, consists of one warped extra spatial coordinate $y$ with exponential warp factor $exp(-kπ|y|)$ (with $k>0$ the 5D curvature assumed of order $M_Pl$), and two three-dimensional branes placed at a compactification distance $R_c$ in $y$.
A Large Mass Hierarchy from a Small Extra Dimension · RS model with one compactified extra dimension · 0.88
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Recents attempts based on, alternatively, $y$-integrated asymmetries have been proposed in Ref. [ref] .
Using Final State Pseudorapidities to Improve s-channel Resonance Observables at the LHC · Spin-diagnosis using $A_CE$ · 0.80
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A discussion of next-to-leading QCD corrections can be found, for instance, in Ref. [ref] .
Z-prime Gauge Bosons at the Tevatron · Heavy neutral gauge bosons · 0.99
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