Measurement Of The Strong Coupling Constants Alpha Subscript S From Jet Rates Using The K Perpendicular Jet Algorithm At Zeus
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Measurement Of The Strong Coupling Constants Alpha Subscript S From Jet Rates Using The K Perpendicular Jet Algorithm At Zeus
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Author : Stephan Eisenhardt
language : en
Publisher:
Release Date : 1998
Measurement Of The Strong Coupling Constants Alpha Subscript S From Jet Rates Using The K Perpendicular Jet Algorithm At Zeus written by Stephan Eisenhardt and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with categories.
Measurement Of The Strong Coupling Constant S Alpha S From Jet Rates Using The K Jet Algorithm At Zeus
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Author : Stephan Eisenhardt
language : en
Publisher:
Release Date : 1998
Measurement Of The Strong Coupling Constant S Alpha S From Jet Rates Using The K Jet Algorithm At Zeus written by Stephan Eisenhardt and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with categories.
Measurement Of The Strong Coupling Constant Alpha S Alpha S From Jet Rates Using The K Jet Algorithm At Zeus
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Author : Stephan Eisenhardt
language : en
Publisher:
Release Date : 1998
Measurement Of The Strong Coupling Constant Alpha S Alpha S From Jet Rates Using The K Jet Algorithm At Zeus written by Stephan Eisenhardt and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with categories.
Measurement Of The Strong Coupling Constant Alpha Subscript S From Jet Production In W Right Arrow E Nu Events
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Author : Michael Allen Lindgren
language : en
Publisher:
Release Date : 1990
Measurement Of The Strong Coupling Constant Alpha Subscript S From Jet Production In W Right Arrow E Nu Events written by Michael Allen Lindgren and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Coupling constants categories.
Measurement Of The Strong Coupling Constant As Alpha S From Jet Rates In Deep Inelastic Scattering
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Author : Richard Nisius
language : en
Publisher:
Release Date : 1994
Measurement Of The Strong Coupling Constant As Alpha S From Jet Rates In Deep Inelastic Scattering written by Richard Nisius and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with categories.
Determination Of Strong Coupling Constant From Multi Jet Events In Deep Inelastic Scattering At Hera
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Author : Kyung Kwang Joo
language : en
Publisher:
Release Date : 1997
Determination Of Strong Coupling Constant From Multi Jet Events In Deep Inelastic Scattering At Hera written by Kyung Kwang Joo and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with categories.
This thesis describes the determination of the strong coupling constant $\alpha\sb{s}$ from measurements of multi-jet rates in deep inelastic electron-proton scattering at HERA by the ZEUS collaboration for values of the squared four-momentum transfer $Q\sp2$ between 120 and 3600 GeV$\sp2.$ A total integrated luminosity of 3.2 pb$\sp{-1},$ collected during 1994, was used for the measurement. Jets are identified with the JADE algorithm. The jet rates were fitted to a next-to-leading order $O\ (\alpha\sbsp{s}{2})$ perturbative QCD calculation with $\alpha\sb{s}$ left as a free parameter. Using the fitted value for $\alpha\sb{s}$ the perturbative calculation describes well the measured rates and kinematic properties of multi-jet events. A cut on the angular distribution of parton emission in the $\gamma\sp{\*}$-parton center of mass is introduced to remove forward going jets. The value of $\alpha\sb{s}$ is measured in three $Q\sp2$ regions and finally combined over the full kinematic range. The $\alpha\sb{s}$ value decreases for increasing $Q\sp2,$ consistent with the running of the strong coupling constant, as expected by QCD. The determined value is $\alpha\sb{s}\ (M\sb{Z\sp0})=0.117\pm0.005\ (stat)\ \pm\ \sbsp{0.005}{0.004}(syst\sb{exp})\ \pm\ 0.007\ (syst\sb{theory}).$
Measurement Of The Strong Coupling Constant S Alpha S From Jet Rates In Deep Inelastic Scattering
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Author : Richard Nisius
language : de
Publisher:
Release Date : 1994
Measurement Of The Strong Coupling Constant S Alpha S From Jet Rates In Deep Inelastic Scattering written by Richard Nisius and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with categories.
A Study Of The Strong Coupling Constant Using W Jets Processes
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Author :
language : en
Publisher:
Release Date : 2001
A Study Of The Strong Coupling Constant Using W Jets Processes written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with categories.
The ratio of the number of W+ 1 jet to W+ 0 jet events is measured with the D0 detector using data from, the 1992--93 Tevatron Collider run. For the W[yields] e[nu] channel with a minimum jet E[sub T] cutoff of 25 GeV, the experimental ratio is 0.065[+-] 0.003(stat)[+-] 0.007(sys). Next-to-Leading order QCD predictions for various parton distributions agree well with each other and are all over one standard deviation below the measurement. Varying the strong coupling constant[alpha][sub s] in both the parton distributions and the partonic cross sections simultaneously does not remove this discrepancy.
Jet Measurements At D0 Using A Kt Algorithm
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Author :
language : en
Publisher:
Release Date : 2002
Jet Measurements At D0 Using A Kt Algorithm written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with categories.
D0 has implemented and calibrated a k[perpendicular] jet algorithm for the first time in a p[bar p] collider. We present two results based on 1992-1996 data which were recently published: the subjet multiplicity in quark and gluon jets and the central inclusive jet cross section. The measured ratio between subjet multiplicities in gluon and quark jets is consistent with theoretical predictions and previous experimental values. NLO pQCD predictions of the k[perpendicular] inclusive jet cross section agree with the D0 measurement, although marginally in the low p[sub T] range. We also present a preliminary measurement of thrust cross sections, which indicates the need to include higher than[alpha][sub s][sup 3] terms and resumation in the theoretical calculations.
Determination Of The Strong Coupling Constant From The Inclusive Jet Cross Section In Ppbar Collisions At Sqrt S
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Author :
language : en
Publisher:
Release Date : 2009
Determination Of The Strong Coupling Constant From The Inclusive Jet Cross Section In Ppbar Collisions At Sqrt S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with categories.
We determine the strong coupling constant [alpha]{sub s} and its energy dependence from the p{sub T} dependence of the inclusive jet cross section in p{bar p} collisions at √s = 1.96 TeV. The strong coupling constant is determined over the transverse momentum range 50