Visualization Of Semileptonic Form Factors From Lattice Qcd PDF Download
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Total Pages | : 6 |
Release | : 2009 |
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Download Visualization of Semileptonic Form Factors from Lattice QCD. Book in PDF, ePub and Kindle
Comparisons of lattice-QCD calculations of semileptonic form factors with experimental measurements often display two sets of points, one each for lattice QCD and experiment. Here we propose to display the output of a lattice-QCD analysis as a curve and error band. This is justified, because lattice-QCD results rely in part on fitting, both for the chiral extrapolation and to extend lattice-QCD data over the full physically allowed kinematic domain. To display an error band, correlations in the fit parameters must be taken into account. For the statistical error, the correlation comes from the fit. To illustrate how to address correlations in the systematic errors, we use the Becirevic-Kaidalov parametrization of the D → [pi]l[nu] and D → Kl[nu] form factors, and a analyticity-based fit for the B → [pi]l[nu] form factor f+.
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Release | : 1994 |
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Download Semi-leptonic Form-factors from Lattice QCD. Book in PDF, ePub and Kindle
Author | : Ernest M Henley |
Publisher | : World Scientific |
Total Pages | : 559 |
Release | : 2013-06-28 |
Genre | : Science |
ISBN | : 9814425826 |
Download 100 Years Of Subatomic Physics Book in PDF, ePub and Kindle
By year 1911 radioactivity had been discovered for over a decade, but its origin remained a mystery. Rutherford's discovery of the nucleus and the subsequent discovery of the neutron by Chadwick started the field of subatomic physics — a quest for understanding the fundamental constituents of matter.This book reviews the important achievements in subatomic physics in the past century. The chapters are divided into two parts: nuclear physics and particle physics. Written by renowned authors who have made major developments in the field, this book provides the academics and researchers an essential overview of the present state of knowledge in nuclear and particle physics.
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Release | : 2014 |
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Download Kaon and D Meson Semileptonic Form Factors from Lattice QCD. Book in PDF, ePub and Kindle
We present the status of on-going calculations of the $K\to\pi l\nu$ and $D\to K(\pi) l\nu$ semileptonic form factors at $q^2=0$. These form factors are important for the determination of the CKM matrix elements $\lvert{V_{us}}\rvert$ and $\lvert{V_{cs(d)}}\rvert$ respectively. This work uses the HISQ action for both valence quarks and sea quarks on MILC $N_f=2+1+1$ configurations. We employ twisted boundary conditions to calculate the form factors at zero momentum transfer directly. The $K\to\pi$ results are an update to previously published results with new data at the physical point. The $D\to K(\pi)$ results are preliminary.
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Release | : 2015 |
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Download $D$-Meson Semileptonic Form Factors at Zero Momentum Transfer in (2+1+1)-Flavor Lattice QCD. Book in PDF, ePub and Kindle
We present a calculation of the $D\to K \ell \nu$ and $D\to\pi \ell \nu$ semileptonic form factors at $q^2=0$, which enable determinations of the CKM matrix elements $\lvert{V_{cs}}\rvert$ and $\lvert{V_{cd}}\rvert$, respectively. We use gauge-field configurations generated by the MILC collaboration with four flavors of highly-improved staggered (HISQ) quarks, analyzing several ensembles including those with physical pion masses and approximate lattice spacings ranging from 0.12~fm to 0.042~fm. We also use the HISQ action for the valence quarks. We employ twisted boundary conditions to calculate the form factors at zero momentum transfer directly. We use heavy-light-meson chiral perturbation theory modified for energetic pions and kaons, and supplemented by terms to describe the lattice-spacing dependence, to obtain preliminary results at the physical point and in the continuum limit.
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Release | : 2002 |
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Download Lattice QCD and the Unitarity Triangle Book in PDF, ePub and Kindle
Theoretical and computational advances in lattice calculations are reviewed, with focus on examples relevant to the unitarity triangle of the CKM matrix. Recent progress in semi-leptonic form factors for B[yields][pi]/v and B[yields] D*lv, as well as the parameter[zeta] in B[sup 0]-[bar B][sup 0] mixing, are highlighted.
Author | : Draper, Terrence |
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Total Pages | : 12 |
Release | : 1988 |
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Download The Pion Form Factor in Lattice QCD Book in PDF, ePub and Kindle
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Total Pages | : 31 |
Release | : 2011 |
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Download Dirac and Pauli Form Factors from Lattice QCD Book in PDF, ePub and Kindle
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Release | : 2012 |
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Download Form Factors from Lattice QCD. Book in PDF, ePub and Kindle
Precision computation of hadronic physics with lattice QCD is becoming feasible. The last decade has seen precent-level calculations of many simple properties of mesons, and the last few years have seen calculations of baryon masses, including the nucleon mass, accurate to a few percent. As computational power increases and algorithms advance, the precise calculation of a variety of more demanding hadronic properties will become realistic. With this in mind, I discuss the current lattice QCD calculations of generalized parton distributions with an emphasis on the prospects for well-controlled calculations for these observables as well. I will do this by way of several examples: the pion and nucleon form factors and moments of the nucleon parton and generalized-parton distributions.
Author | : Ashley Noel Cooke |
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Release | : 2014 |
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Download Lattice QCD Study of Octet Hyperon Semi-leptonic Decays Book in PDF, ePub and Kindle