What does the W transverse momentum distribution say about the W+1 jet/W+0 jet ratio?

We compute the W transverse momentum distribution at large transverse momentum at fixed next-to-leading order (i.e. O(alpha_s^2) and find good agreement with the preliminary measurements reported by D0. We find that the W transverse momentum distribution is typically significantly larger than the ex...

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Detalles Bibliográficos
Autores principales: Glover, E.W.Nigel, Summers, D.J.
Lenguaje:eng
Publicado: 1997
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/S0370-2693(97)01461-5
http://cds.cern.ch/record/330822
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author Glover, E.W.Nigel
Summers, D.J.
author_facet Glover, E.W.Nigel
Summers, D.J.
author_sort Glover, E.W.Nigel
collection CERN
description We compute the W transverse momentum distribution at large transverse momentum at fixed next-to-leading order (i.e. O(alpha_s^2) and find good agreement with the preliminary measurements reported by D0. We find that the W transverse momentum distribution is typically significantly larger than the exclusive one-jet rate for a given value of p_T^W or E_T^jet, mainly because two or more jet events are excluded. As a consequence, we find that theoretically the W+1 jet to W+0 jet ratio R^10 is smaller than the analogous quantity defined in terms of p_T^W, R^W. This hierarchy is preserved under changes of renormalisation/factorisation scales, strong coupling constant and jet algorithm. However, this appears to be in contradiction with the preliminary experimental results which suggest R^10 > R^W.
id cern-330822
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1997
record_format invenio
spelling cern-3308222023-03-14T17:57:35Zdoi:10.1016/S0370-2693(97)01461-5http://cds.cern.ch/record/330822engGlover, E.W.NigelSummers, D.J.What does the W transverse momentum distribution say about the W+1 jet/W+0 jet ratio?Particle Physics - PhenomenologyWe compute the W transverse momentum distribution at large transverse momentum at fixed next-to-leading order (i.e. O(alpha_s^2) and find good agreement with the preliminary measurements reported by D0. We find that the W transverse momentum distribution is typically significantly larger than the exclusive one-jet rate for a given value of p_T^W or E_T^jet, mainly because two or more jet events are excluded. As a consequence, we find that theoretically the W+1 jet to W+0 jet ratio R^10 is smaller than the analogous quantity defined in terms of p_T^W, R^W. This hierarchy is preserved under changes of renormalisation/factorisation scales, strong coupling constant and jet algorithm. However, this appears to be in contradiction with the preliminary experimental results which suggest R^10 > R^W.We compute the W transverse momentum distribution at large transverse momentum at fixed next-to-leading order (i.e. O (α s 2 ) ) and find good agreement with the preliminary measurements reported by DØ . We find that the W transverse momentum distribution is typically significantly larger than the exclusive one-jet rate for a given value of p T W or E T jet , mainly because two or more jet events are excluded. As a consequence, we find that theoretically the W +1 jet to W +0 jet ratio R 10 is smaller than the analogous quantity defined in terms of p T W , R W . This hierarchy is preserved under changes of renormalisation/factorisation scales, strong coupling constant and jet algorithm. However, this appears to be in contradiction with the preliminary experimental results which suggest R 10 > R W .We compute the W transverse momentum distribution at large transverse momentum at fixed next-to-leading order (i.e. O(alpha_s^2) and find good agreement with the preliminary measurements reported by D0. We find that the W transverse momentum distribution is typically significantly larger than the exclusive one-jet rate for a given value of p_T^W or E_T^jet, mainly because two or more jet events are excluded. As a consequence, we find that theoretically the W+1 jet to W+0 jet ratio R^10 is smaller than the analogous quantity defined in terms of p_T^W, R^W. This hierarchy is preserved under changes of renormalisation/factorisation scales, strong coupling constant and jet algorithm. However, this appears to be in contradiction with the preliminary experimental results which suggest R^10 > R^W.hep-ph/9707469CERN-TH-97-173DTP-97-72CERN-TH-97-173DTP-97-72oai:cds.cern.ch:3308221997-07-28
spellingShingle Particle Physics - Phenomenology
Glover, E.W.Nigel
Summers, D.J.
What does the W transverse momentum distribution say about the W+1 jet/W+0 jet ratio?
title What does the W transverse momentum distribution say about the W+1 jet/W+0 jet ratio?
title_full What does the W transverse momentum distribution say about the W+1 jet/W+0 jet ratio?
title_fullStr What does the W transverse momentum distribution say about the W+1 jet/W+0 jet ratio?
title_full_unstemmed What does the W transverse momentum distribution say about the W+1 jet/W+0 jet ratio?
title_short What does the W transverse momentum distribution say about the W+1 jet/W+0 jet ratio?
title_sort what does the w transverse momentum distribution say about the w+1 jet/w+0 jet ratio?
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/S0370-2693(97)01461-5
http://cds.cern.ch/record/330822
work_keys_str_mv AT gloverewnigel whatdoesthewtransversemomentumdistributionsayaboutthew1jetw0jetratio
AT summersdj whatdoesthewtransversemomentumdistributionsayaboutthew1jetw0jetratio

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