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Observation and measurement of the H...

Quan, Xiaohang.

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Observation and measurement of the Higgs-like boson at 125 GeV in the two-photon decay channel with the CMS experiment.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Observation and measurement of the Higgs-like boson at 125 GeV in the two-photon decay channel with the CMS experiment./
作者:	Quan, Xiaohang.
面頁冊數:	93 p.
附註:	Source: Dissertation Abstracts International, Volume: 75-01(E), Section: B.
Contained By:	Dissertation Abstracts International75-01B(E).
標題:	Physics, Molecular. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3597544
ISBN:	9781303456695

Observation and measurement of the Higgs-like boson at 125 GeV in the two-photon decay channel with the CMS experiment.
Quan, Xiaohang.

Observation and measurement of the Higgs-like boson at 125 GeV in the two-photon decay channel with the CMS experiment. - 93 p.

Source: Dissertation Abstracts International, Volume: 75-01(E), Section: B.

Thesis (Ph.D.)--Princeton University, 2013.

We present results for the search for the Standard Model Higgs boson in the two-photon channel using the full 2011+2012 dataset recorded by the CMS experiment at the LHC. The MVA analysis, most sensitive for discovery, observes an excess of events at 125 GeV with a local significance of 3.2sigma. The mass of the observed boson is measured to be 125.4 +/- 0.5( stat.) +/- 0.6(syst.) GeV. For a Higgs boson mass hypothesis of 125 GeV, the best fit signal strength is 0.78+0.28-0.26 times the SM Higgs boson cross-section. An upper limit on its natural width is found to be 6.9 GeV/c2 at 95% confidence level.

ISBN: 9781303456695Subjects--Topical Terms:

1018648
Physics, Molecular.

Observation and measurement of the Higgs-like boson at 125 GeV in the two-photon decay channel with the CMS experiment.
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245 1 0 $a Observation and measurement of the Higgs-like boson at 125 GeV in the two-photon decay channel with the CMS experiment.
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500 $a Source: Dissertation Abstracts International, Volume: 75-01(E), Section: B.
500 $a Adviser: Chris G. Tully.
502 $a Thesis (Ph.D.)--Princeton University, 2013.
520 $a We present results for the search for the Standard Model Higgs boson in the two-photon channel using the full 2011+2012 dataset recorded by the CMS experiment at the LHC. The MVA analysis, most sensitive for discovery, observes an excess of events at 125 GeV with a local significance of 3.2sigma. The mass of the observed boson is measured to be 125.4 +/- 0.5( stat.) +/- 0.6(syst.) GeV. For a Higgs boson mass hypothesis of 125 GeV, the best fit signal strength is 0.78+0.28-0.26 times the SM Higgs boson cross-section. An upper limit on its natural width is found to be 6.9 GeV/c2 at 95% confidence level.
520 $a We also present results from searches for an additional Higgs boson decaying into two photons, treating the observed resonance as a background process. Cases in which the additional state is SM-like, fermiophobic or gauge-phobic have been considered. In addition, we present a search targeted at discriminating between a single Higgs boson at 125 GeV and two very close-by ones.
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