Observation of Top Quark Production in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mrow><mml:mover><mml:mrow><mml:mi mathvariant="italic">p</mml:mi></mml:mrow><mml:mrow><mml:mi>¯</mml:mi></mml:mrow></mml:mover></mml:mrow></mml:mrow><mml:mi mathvariant="italic">p</mml:mi></mml:math>Collisions with the Collider Detector at Fermilab

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P.; Yeh, P.; Yin, M.; Yoh, J.; Yosef, C.; Yoshida, T.; Yovanovitch, D.; Yu, I.; Yun, J. C.; Zanetti, A.; Zetti, F.; Zhang, L.; Zhang, W.; Zucchelli, S.

doi:10.1103/physrevlett.74.2626

Cited by 1,360 publications

(689 citation statements)

References 8 publications

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“…In the 1980's CERN discovered the W and Z [4,5], while later in the 1990's the top quark was observed at Fermilab [6,7]. Aside from the Higgs, these particles complete what is expected from the Standard Model.…”

Section: List Of Tablesmentioning

confidence: 94%

Measurement of the relative fraction of t$\bar{t}$ events produced via gluon fusion in p$\bar{p}$ collision at √s = 1.96 TeV at CDF

Yamaoka

2007

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In this thesis we present a measurement of the relative fraction of tt events produced via gluon-fusion to the total number of tt events. Using the kinematics of the production and decay of the top and antitop quark pair, we trained a Neural Network to discriminate the gluon-fusion events. The Neural Network was then used as a template to fit for the gluon-fusion fraction in data. Using a total integrated luminosity of 955 pb −1 we find σ(gg→tt) σ(pp→tt) < 0.33 at 68% confidence level and σ(gg→tt) σ(pp→tt) < 0.61 at 95% confidence level.ii

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Section: List Of Tablesmentioning

confidence: 94%

Measurement of the relative fraction of t$\bar{t}$ events produced via gluon fusion in p$\bar{p}$ collision at √s = 1.96 TeV at CDF

Yamaoka

2007

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“…The unusually long article described the analysis in great detail, and spoke of "evidence" for top quark production [6]. One year later CDF and DZERO both presented [7] 5σ significances based on their counting experiments, obtained by analyzing three times more collision data. The top quark was thus the first particle discovered by a willful, disciplined application of the 5σ criterion.…”

Section: How 5σ Became a Standardmentioning

confidence: 99%

Extraordinary claims: the 0.000029% solution

Dorigo

2015

EPJ Web of Conferences

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Abstract. The five-standard-deviation threshold is an established standard for discovery claims in experimental particle physics; however, the criterion is an ad-hoc recipe with no solid foundations. In this report I discuss its origins and the issues it was designed to address, pointing out its shortcomings and the need for a more flexible approach to decide when a new observed effect should be taken seriously.

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“…A consequence of the interactions among gluons is that the coupling "constant" α s depends on Q 2 (the interaction momentum transfer scale) 11 . To a first approximation in Q 2 /λ 2 one has:…”

Section: Quantum-chromo-dynamicsmentioning

confidence: 99%

“…If no acceptance decision is made up to that time the event is lost 11 . L1 decisions are made in average in about 4 µs: no dead time is expected from this level.…”

Section: Levelmentioning

confidence: 99%

“…First of all the renormalizability of the standard model requires that the sum of electric charges of all left-handed fermions is zero. The discovery of top quark was accomplished in 1995 at the CDF and D/ 0 experiment [10,11]. After more than 10 years from its discovery the world average for top quark mass is M top = 170.9 ± 1.1(stat) ± 1.5(syst)GeV /c 2 [59] (more than 30 times the mass of second heaviest quark).…”

Section: The Top Quarkmentioning

confidence: 99%

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