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An update of combined measurements of the new Higgs-like boson with high mass resolution channels

An update is presented of the measurement of the newly discovered boson properties using the high mass resolution channels, $H\rightarrow\,\gamma\gamma$ and $H \rightarrow ZZ^{(*)}\rightarrow 4\ell$, with up to 4.8 fb$^{-1}$ of $pp$ collision data at $\sqrt{s}=7$ TeV and 13 fb$^{-1}$ at $\sqrt{s}=8$...

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Detalles Bibliográficos
Autor principal: The ATLAS collaboration
Lenguaje:eng
Publicado: 2012
Materias:
Acceso en línea:http://cds.cern.ch/record/1499629
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author The ATLAS collaboration
author_facet The ATLAS collaboration
author_sort The ATLAS collaboration
collection CERN
description An update is presented of the measurement of the newly discovered boson properties using the high mass resolution channels, $H\rightarrow\,\gamma\gamma$ and $H \rightarrow ZZ^{(*)}\rightarrow 4\ell$, with up to 4.8 fb$^{-1}$ of $pp$ collision data at $\sqrt{s}=7$ TeV and 13 fb$^{-1}$ at $\sqrt{s}=8$ TeV. The combined mass measurement derived from the $H\rightarrow\,\gamma\gamma$ and $H \rightarrow ZZ^{(*)}\rightarrow 4\ell$ channels is $m_H=125.2 \pm 0.3\,(stat)\,\, \pm 0.6\,(sys)$ GeV. The combination of all final states, including the recently updated low mass resolution channels $H\rightarrow\,WW^{(*)}{\rightarrow\,}\ell\nu\ell\nu$, $H \rightarrow \tau^+\tau^-$ and $H \rightarrow b\bar{b}$, is reported for this data set in terms of the combined signal strength ($\mu$). This is determined to be $\mu = 1.35 \pm 0.24$ computed at a mass of 125 GeV, in agreement with the Standard Model expectation.
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spelling cern-14996292021-04-18T19:37:52Zhttp://cds.cern.ch/record/1499629engThe ATLAS collaborationAn update of combined measurements of the new Higgs-like boson with high mass resolution channelsDetectors and Experimental TechniquesAn update is presented of the measurement of the newly discovered boson properties using the high mass resolution channels, $H\rightarrow\,\gamma\gamma$ and $H \rightarrow ZZ^{(*)}\rightarrow 4\ell$, with up to 4.8 fb$^{-1}$ of $pp$ collision data at $\sqrt{s}=7$ TeV and 13 fb$^{-1}$ at $\sqrt{s}=8$ TeV. The combined mass measurement derived from the $H\rightarrow\,\gamma\gamma$ and $H \rightarrow ZZ^{(*)}\rightarrow 4\ell$ channels is $m_H=125.2 \pm 0.3\,(stat)\,\, \pm 0.6\,(sys)$ GeV. The combination of all final states, including the recently updated low mass resolution channels $H\rightarrow\,WW^{(*)}{\rightarrow\,}\ell\nu\ell\nu$, $H \rightarrow \tau^+\tau^-$ and $H \rightarrow b\bar{b}$, is reported for this data set in terms of the combined signal strength ($\mu$). This is determined to be $\mu = 1.35 \pm 0.24$ computed at a mass of 125 GeV, in agreement with the Standard Model expectation.ATLAS-CONF-2012-170oai:cds.cern.ch:14996292012-12-14
spellingShingle Detectors and Experimental Techniques
The ATLAS collaboration
An update of combined measurements of the new Higgs-like boson with high mass resolution channels
title An update of combined measurements of the new Higgs-like boson with high mass resolution channels
title_full An update of combined measurements of the new Higgs-like boson with high mass resolution channels
title_fullStr An update of combined measurements of the new Higgs-like boson with high mass resolution channels
title_full_unstemmed An update of combined measurements of the new Higgs-like boson with high mass resolution channels
title_short An update of combined measurements of the new Higgs-like boson with high mass resolution channels
title_sort update of combined measurements of the new higgs-like boson with high mass resolution channels
topic Detectors and Experimental Techniques
url http://cds.cern.ch/record/1499629
work_keys_str_mv AT theatlascollaboration anupdateofcombinedmeasurementsofthenewhiggslikebosonwithhighmassresolutionchannels
AT theatlascollaboration updateofcombinedmeasurementsofthenewhiggslikebosonwithhighmassresolutionchannels