Bounds on an Anomalous Dijet Resonance in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>W</mml:mi><mml:mo>+</mml:mo><mml:mtext mathvariant="normal">jets</mml:mtext></mml:math>Production in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>p</mml:mi><mml:mover accent="true"><mml:mi>p</mml:mi><mml:mo>¯</mml:mo></mml:mover></mml:math>Collisions at<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msqrt><mml:mi>s</mml

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doi:10.1103/physrevlett.107.011804

Cited by 57 publications

(26 citation statements)

References 28 publications

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“…We offer some remarks on the A t" t FB [33] and Wjj [34] anomalies at the Tevatron. Naively, one might think that the presence of resonance production of t " t could be relevant for A t" t FB .…”

Section: Discussionmentioning

confidence: 99%

Early LHC phenomenology of Yukawa-bound heavyQQ¯mesons

Enkhbat¹,

Hou²,

Yokoya³

2011

Phys. Rev. D

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Current limits from the LHC on fourth generation quarks are already at the unitarity bound of 500 GeV or so. If they exist, the strong Yukawa couplings are turning nonperturbative, and may form bound states. We study the domain of m b 0 and m t 0 in the range of 500 to 700 GeV, where we expect binding energies are mainly of Yukawa origin, with QCD subdominant. To be consistent with electroweak precision tests, the t 0 and b 0 quarks have to be nearly degenerate, exhibiting a new ''isospin.'' Comparing relativistic expansion with a relativistic bound state approach, we find the most interesting is the production of a color octet, isosinglet vector meson (a ''gluon-prime'') via q " q ! ! 8 . Leading decay modes are AE 8 W Ç , 0 8 Z 0 , and constituent quark decay, with q " q and t " t 0 and b " b 0 subdominant. The color octet, isovector pseudoscalar 8 meson decays via constituent quark decay, or to Wg. These decay rates are parameterized by the decay constant, the binding energy and mass differences, and V tb 0 . For small V t 0 b , one could have a spectacular signal of WWg, where a soft W accompanies a very massive Wg pair. In general, however, one has high multiplicity signals with b, W, and t jet substructures that are not so different from the t 0 " t 0 and b 0 " b 0 search.

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Section: Discussionmentioning

confidence: 99%

Early LHC phenomenology of Yukawa-bound heavyQQ¯mesons

Enkhbat¹,

Hou²,

Yokoya³

2011

Phys. Rev. D

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“…The initially enthusiastic response of the high energy physics community to CDF's excess has been tempered somewhat by the results of a subsequent study from the DØ collaboration [10]. In their analysis of 4.3 fb −1 of data, the DØ collaboration does not report a statistically significant excess consistent with that observed by CDF, but does favor (at the ∼1σ level) the presence of a smaller bump-like feature at ∼150 GeV, corresponding to a production cross section of 0.82…”

Section: Jhep10(2011)063mentioning

confidence: 99%

“…The DØ collaboration claims to exclude a 'bump' arising from a 4 pb Higgs-like scalar with a statistical significance described by a p-value of 8 × 10 −6 [10].…”

Section: +083mentioning

confidence: 99%

“…While the CDF excess in this channel was first observed at 3.2σ significance in a data set corresponding to only 4.3 fb −1 of integrated luminosity [1], the analysis has been updated using 7.3 fb −1 of data, resulting in a increased significance of 4.1σ [2]. We remind the reader that the DØ collaboration's analysis of the ν +dijet channel did not confirm the presence the excess reported by CDF [10]. Here, we use the results of the 7.3 fb −1 analysis and compare the various kinematic distributions of the excess events (made available by the CDF collaboration in ref.…”

Section: Jhep10(2011)063mentioning

confidence: 99%

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What the Tevatron found?

Buckley

Martín

Neil

2011

J. High Energ. Phys.

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Abstract:The CDF collaboration has reported a 4.1σ excess in their lepton, missing energy, and dijets channel. This excess, which takes the form of an approximately Gaussian peak centered at a dijet invariant mass of 147 GeV, has provoked a great deal of experimental and theoretical interest. Although the DØ collaboration has reported that they do not observe a signal consistent with CDF, there is currently no widely accepted explanation for the discrepancy between these two experiments. A resolution of this issue is of great importance -not least because it may teach us lessons relevant for future searches at the LHC -and it will clearly require additional information. In this paper, we consider the ability of the Tevatron and LHC detectors to observe evidence associated with the CDF excess in a variety of channels. We also discuss the ability of selected kinematic distributions to distinguish between Standard Model explanations of the observed excess and various new physics scenarios.

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“…Note added.-Recent results from D0 on Wjj events show no significant deviation from theory [14], while CDF has increased the significance of its Wjj excess events to 4.2 sigma. …”

mentioning

confidence: 93%

Top Quark Asymmetry andWjjExcess at CDF from Gauged Flavor Symmetry

Babu

Frank²,

Kumar

2011

Phys. Rev. Lett.

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We show that the scalar sector needed for fermion mass generation when the flavor symmetry of the standard model is maximally gauged can consistently explain two anomalies reported recently by the CDF Collaboration-the forward-backward asymmetry in tt pair production and the dijet invariant mass in the Wjj channel. A pair of nearly degenerate scalar doublets with masses in the range 150-200 GeV explain these anomalies, with additional scalars predicted in the mass range 100-400 GeV. Consistency of such low scale flavor physics with flavor-changing processes is shown, and expectations for the LHC are outlined.

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Bounds on an Anomalous Dijet Resonance inW+jetsProduction inpp¯Collisions ats

Cited by 57 publications

References 28 publications

Early LHC phenomenology of Yukawa-bound heavyQQ¯mesons

Early LHC phenomenology of Yukawa-bound heavyQQ¯mesons

What the Tevatron found?

Top Quark Asymmetry andWjjExcess at CDF from Gauged Flavor Symmetry

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