Observation of the diphoton decay of the Higgs boson and measurement of its properties
Observation of the diphoton decay mode of the recently discovered Higgs boson and measurement of some of its properties are reported. The analysis uses the entire dataset collected by the CMS experiment in proton-proton collisions during the 2011 and 2012 LHC running periods. The data samples corres...
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| Format: | Article |
| Language: | en_US |
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Springer-Verlag
2015
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| Online Access: | http://hdl.handle.net/1721.1/94588 https://orcid.org/0000-0002-3831-9071 https://orcid.org/0000-0003-3106-4894 https://orcid.org/0000-0001-6332-5839 https://orcid.org/0000-0001-8983-2169 https://orcid.org/0000-0002-1260-777X https://orcid.org/0000-0002-9418-6656 https://orcid.org/0000-0002-6047-4211 https://orcid.org/0000-0002-7945-005X https://orcid.org/0000-0003-3681-0649 https://orcid.org/0000-0003-1486-606X https://orcid.org/0000-0003-2593-7767 https://orcid.org/0000-0001-9236-6621 https://orcid.org/0000-0002-0869-5631 https://orcid.org/0000-0002-1136-6900 |
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| author | Apyan, Aram Busza, Wit Cali, Ivan Amos Chan, M. Di Matteo, Leonardo Gomez-Ceballos, Guillelmo Goncharov, Maxim Gulhan, Doga Can Klute, Markus Lai, Yue Shi Ma, Teng Paus, Christoph M. E. Ralph, Duncan Kelley Stephans, George S. F. Velicanu, Dragos Alexandru Veverka, Jan Wyslouch, Boleslaw Yoon, A. S. Zanetti, Marco Stoeckli, Fabian Sumorok, Konstanty C Yang, Mingming Wyslouch, Victoria Barbieri, Richard Alexander Bauer, Gerry P Dutta, Valentina Lee, Yen-Jie Levin, Andrew Michael Luckey Jr, P David Roland, Christof E Roland, Gunther M |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Apyan, Aram Busza, Wit Cali, Ivan Amos Chan, M. Di Matteo, Leonardo Gomez-Ceballos, Guillelmo Goncharov, Maxim Gulhan, Doga Can Klute, Markus Lai, Yue Shi Ma, Teng Paus, Christoph M. E. Ralph, Duncan Kelley Stephans, George S. F. Velicanu, Dragos Alexandru Veverka, Jan Wyslouch, Boleslaw Yoon, A. S. Zanetti, Marco Stoeckli, Fabian Sumorok, Konstanty C Yang, Mingming Wyslouch, Victoria Barbieri, Richard Alexander Bauer, Gerry P Dutta, Valentina Lee, Yen-Jie Levin, Andrew Michael Luckey Jr, P David Roland, Christof E Roland, Gunther M |
| author_sort | Apyan, Aram |
| collection | MIT |
| description | Observation of the diphoton decay mode of the recently discovered Higgs boson and measurement of some of its properties are reported. The analysis uses the entire dataset collected by the CMS experiment in proton-proton collisions during the 2011 and 2012 LHC running periods. The data samples correspond to integrated luminosities of 5.1 fb [superscript -1] at √s = 7 TeV and 19.7 fb [superscript -1] at 8 TeV. A clear signal is observed in the diphoton channel at a mass close to 125 GeV with a local significance of 5.7σ , where a significance of 5.2σ is expected for the standard model Higgs boson. The mass is measured to be 124.70±0.34GeV=124.70±0.31(stat)±0.15(syst)GeV , and the best-fit signal strength relative to the standard model prediction is 1.14[superscript +0.26][subscript −0.23] = 1.14±0.21(stat) [superscript +0.09][subscript −0.05](syst) [superscript +0.13][subscript −0.09](theo) . Additional measurements include the signal strength modifiers associated with different production mechanisms, and hypothesis tests between spin-0 and spin-2 models. |
| first_indexed | 2024-09-23T13:09:26Z |
| format | Article |
| id | mit-1721.1/94588 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T13:09:26Z |
| publishDate | 2015 |
| publisher | Springer-Verlag |
| record_format | dspace |
| spelling | mit-1721.1/945882023-02-26T04:29:18Z Observation of the diphoton decay of the Higgs boson and measurement of its properties Apyan, Aram Busza, Wit Cali, Ivan Amos Chan, M. Di Matteo, Leonardo Gomez-Ceballos, Guillelmo Goncharov, Maxim Gulhan, Doga Can Klute, Markus Lai, Yue Shi Ma, Teng Paus, Christoph M. E. Ralph, Duncan Kelley Stephans, George S. F. Velicanu, Dragos Alexandru Veverka, Jan Wyslouch, Boleslaw Yoon, A. S. Zanetti, Marco Stoeckli, Fabian Sumorok, Konstanty C Yang, Mingming Wyslouch, Victoria Barbieri, Richard Alexander Bauer, Gerry P Dutta, Valentina Lee, Yen-Jie Levin, Andrew Michael Luckey Jr, P David Roland, Christof E Roland, Gunther M Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Massachusetts Institute of Technology. School of Science Apyan, Aram Barbieri, R. Bauer, Gerry P. Busza, Wit Cali, Ivan Amos Chan, M. Di Matteo, Leonardo Dutta, V. Gomez-Ceballos, Guillelmo Goncharov, Maxim Gulhan, Doga Can Klute, Markus Lai, Yue Shi Lee, Y.-J. Levin, A. Luckey, P. David, Jr. Ma, Teng Paus, Christoph M. E. Ralph, Duncan Kelley Roland, Christof E. Roland, Gunther M. Stephans, George S. F. Stockli, Fabian Sumorok, Konstanty C. Velicanu, Dragos Alexandru Veverka, Jan Wyslouch, Boleslaw Yang, M. Yoon, A. S. Zanetti, Marco Zhukova, Victoria Observation of the diphoton decay mode of the recently discovered Higgs boson and measurement of some of its properties are reported. The analysis uses the entire dataset collected by the CMS experiment in proton-proton collisions during the 2011 and 2012 LHC running periods. The data samples correspond to integrated luminosities of 5.1 fb [superscript -1] at √s = 7 TeV and 19.7 fb [superscript -1] at 8 TeV. A clear signal is observed in the diphoton channel at a mass close to 125 GeV with a local significance of 5.7σ , where a significance of 5.2σ is expected for the standard model Higgs boson. The mass is measured to be 124.70±0.34GeV=124.70±0.31(stat)±0.15(syst)GeV , and the best-fit signal strength relative to the standard model prediction is 1.14[superscript +0.26][subscript −0.23] = 1.14±0.21(stat) [superscript +0.09][subscript −0.05](syst) [superscript +0.13][subscript −0.09](theo) . Additional measurements include the signal strength modifiers associated with different production mechanisms, and hypothesis tests between spin-0 and spin-2 models. United States. Dept. of Energy National Science Foundation (U.S.) Alfred P. Sloan Foundation 2015-02-18T16:38:53Z 2015-02-18T16:38:53Z 2014-10 2014-07 Article http://purl.org/eprint/type/JournalArticle 1434-6044 1434-6052 http://hdl.handle.net/1721.1/94588 Khachatryan, V., A. M. Sirunyan, A. Tumasyan, W. Adam, T. Bergauer, M. Dragicevic, J. Erö, et al. “Observation of the Diphoton Decay of the Higgs Boson and Measurement of Its Properties.” Eur. Phys. J. C 74, no. 10 (October 2014). https://orcid.org/0000-0002-3831-9071 https://orcid.org/0000-0003-3106-4894 https://orcid.org/0000-0001-6332-5839 https://orcid.org/0000-0001-8983-2169 https://orcid.org/0000-0002-1260-777X https://orcid.org/0000-0002-9418-6656 https://orcid.org/0000-0002-6047-4211 https://orcid.org/0000-0002-7945-005X https://orcid.org/0000-0003-3681-0649 https://orcid.org/0000-0003-1486-606X https://orcid.org/0000-0003-2593-7767 https://orcid.org/0000-0001-9236-6621 https://orcid.org/0000-0002-0869-5631 https://orcid.org/0000-0002-1136-6900 en_US http://dx.doi.org/10.1140/epjc/s10052-014-3076-z European Physical Journal C: Particles and Fields Creative Commons Attribution http://creativecommons.org/licenses/by/4.0/ application/pdf Springer-Verlag Springer-Verlag |
| spellingShingle | Apyan, Aram Busza, Wit Cali, Ivan Amos Chan, M. Di Matteo, Leonardo Gomez-Ceballos, Guillelmo Goncharov, Maxim Gulhan, Doga Can Klute, Markus Lai, Yue Shi Ma, Teng Paus, Christoph M. E. Ralph, Duncan Kelley Stephans, George S. F. Velicanu, Dragos Alexandru Veverka, Jan Wyslouch, Boleslaw Yoon, A. S. Zanetti, Marco Stoeckli, Fabian Sumorok, Konstanty C Yang, Mingming Wyslouch, Victoria Barbieri, Richard Alexander Bauer, Gerry P Dutta, Valentina Lee, Yen-Jie Levin, Andrew Michael Luckey Jr, P David Roland, Christof E Roland, Gunther M Observation of the diphoton decay of the Higgs boson and measurement of its properties |
| title | Observation of the diphoton decay of the Higgs boson and measurement of its properties |
| title_full | Observation of the diphoton decay of the Higgs boson and measurement of its properties |
| title_fullStr | Observation of the diphoton decay of the Higgs boson and measurement of its properties |
| title_full_unstemmed | Observation of the diphoton decay of the Higgs boson and measurement of its properties |
| title_short | Observation of the diphoton decay of the Higgs boson and measurement of its properties |
| title_sort | observation of the diphoton decay of the higgs boson and measurement of its properties |
| url | http://hdl.handle.net/1721.1/94588 https://orcid.org/0000-0002-3831-9071 https://orcid.org/0000-0003-3106-4894 https://orcid.org/0000-0001-6332-5839 https://orcid.org/0000-0001-8983-2169 https://orcid.org/0000-0002-1260-777X https://orcid.org/0000-0002-9418-6656 https://orcid.org/0000-0002-6047-4211 https://orcid.org/0000-0002-7945-005X https://orcid.org/0000-0003-3681-0649 https://orcid.org/0000-0003-1486-606X https://orcid.org/0000-0003-2593-7767 https://orcid.org/0000-0001-9236-6621 https://orcid.org/0000-0002-0869-5631 https://orcid.org/0000-0002-1136-6900 |
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