Evidence For Spin Correlation In Tbart Production PDF Download
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| Total Pages | : 7 |
| Release | : 2011 |
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Download Evidence for Spin Correlation in $t\bar{t}$ Production Book in PDF, ePub and Kindle
We present a measurement of the ratio of events with correlated t and {bar t} spins to the total number of t{bar t} events. This ratio f is evaluated using a matrix-element-based approach in events with a single lepton (electron or muon) and at least four jets. We analyze p{bar p} collisions data corresponding to an integrated luminosity of 5.3 fb−1 collected with the D0 detector at the Fermilab Tevatron collider operating at a center of mass energy √s = 1.96 TeV. Combining this result with a recent measurement of f in t{bar t} → W+b W−{bar b} → l+ [nu]b l− {bar {nu}}b final states, we find f in agreement with the standard model. In addition, the combination provides evidence for the presence of spin correlation in t{bar t} events with a significance of more than three standard deviations.
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| Release | : 2012 |
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Download Evidence for Spin Correlation in Tt Production Book in PDF, ePub and Kindle
We present a measurement of the ratio of events with correlated t and t spins to the total number of tt events. This ratio f is evaluated using a matrix-element-based approach in 729 tt candidate events with a single lepton l (electron or muon) and at least four jets. The analyzed pp collisions data correspond to an integrated luminosity of 5.3 fb-1 and were collected with the D0 detector at the Fermilab Tevatron collider operating at a center-of-mass energy \(\sqrt{s}=1.96\) TeV. Combining this result with a recent measurement of f in dileptonic final states, we find f in agreement with the standard model. In addition, the combination provides evidence for the presence of spin correlation in tt events with a significance of more than 3 standard deviations.
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| Total Pages | : 692 |
| Release | : 1995 |
| Genre | : Aeronautics |
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Download Scientific and Technical Aerospace Reports Book in PDF, ePub and Kindle
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| Total Pages | : 26 |
| Release | : 2016 |
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Download Measurement of Spin Correlations in T-tbar Production Using the Matrix Element Method in the Muon+jets Final State in Pp Collisions at {u221A}(s) Book in PDF, ePub and Kindle
The consistency of the spin correlation strength in top quark pair production with the standard model (SM) prediction is tested in the muon+jets final state. The events are selected from pp collisions, collected by the CMS detector, at a centre-of-mass energy of 8 TeV, corresponding to an integrated luminosity of 19.7 fb-1. We then compare the data with the expectation for the spin correlation predicted by the SM and with the expectation of no correlation. Furthermore, by using a template fit method, the fraction of events that show SM spin correlations is measured to be 0.72 ±0.08 (stat)+0.15 -0.13 (syst), representing the most precise measurement of this quantity in the lepton+jets final state to date.
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| Release | : 2001 |
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Download Spin Correlation in T[anti T] Production from P[anti P] Collisions At[radical] Book in PDF, ePub and Kindle
The Standard Model predicts that the lifetime of the top quark is shorter than the typical time scale at which hadronization process occurs, and the spin information at its production is preserved. Spin correlation of the t[anti t] system from p[anti p] collisions at the Tevatron is analyzed using 6 events in the dilepton channels collected using the D0 detector. Spin correlation factor of[kappa]>[minus] 0.25 at 68% CL is obtained from the data.
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| Total Pages | : 331 |
| Release | : 2000 |
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Download Spin Correlation in T{anti T} Production from P{anti P} Collisions at √s Book in PDF, ePub and Kindle
The Standard Model predicts that the lifetime of the top quark is shorter than the typical time scale at which hadronization process occurs, and the spin information at its production is preserved. Spin correlation of the t{anti t} system from p{anti p} collisions at the Tevatron is analyzed using 6 events in the dilepton channels collected using the D0 detector. Spin correlation factor of?> - 0.25 at 68% CL is obtained from the data.
| Author | : Sadamichi Maekawa |
| Publisher | : Oxford University Press |
| Total Pages | : 541 |
| Release | : 2017 |
| Genre | : Science |
| ISBN | : 0198787073 |
Download Spin Current Book in PDF, ePub and Kindle
In a new branch of physics and technology, called spin-electronics or spintronics, the flow of electrical charge (usual current) as well as the flow of electron spin, the so-called "spin current", are manipulated and controlled together. This book is intended to provide an introduction and guide to the new physics and applications of spin current.
| Author | : United States. Energy Research and Development Administration |
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| Total Pages | : 1104 |
| Release | : 1977 |
| Genre | : Medicine |
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Download ERDA Energy Research Abstracts Book in PDF, ePub and Kindle
| Author | : United States. Energy Research and Development Administration. Technical Information Center |
| Publisher | : |
| Total Pages | : 1682 |
| Release | : 1977 |
| Genre | : Force and energy |
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Download ERDA Energy Research Abstracts Book in PDF, ePub and Kindle
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| Total Pages | : 718 |
| Release | : 1995 |
| Genre | : Nuclear energy |
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Download INIS Atomindex Book in PDF, ePub and Kindle
