Search for extra dimensions in diphoton events from proton–proton collisions at √ s = 7 TeV in the ATLAS detector at the LHC
The large difference between the Planck scale and the electroweak scale, known as the hierarchy problem, is addressed in certain models through the postulate of extra spatial dimensions. A search for evidence of extra spatial dimensions in the diphoton channel has been performed using the full set o...
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| Format: | Article |
| Language: | en_US |
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IOP Publishing
2013
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| Online Access: | http://hdl.handle.net/1721.1/79756 https://orcid.org/0000-0002-7586-7253 |
| _version_ | 1811073661945249792 |
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| author | Taylor, Frank E. |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Taylor, Frank E. |
| author_sort | Taylor, Frank E. |
| collection | MIT |
| description | The large difference between the Planck scale and the electroweak scale, known as the hierarchy problem, is addressed in certain models through the postulate of extra spatial dimensions. A search for evidence of extra spatial dimensions in the diphoton channel has been performed using the full set of proton–proton collisions at √s = 7 TeV recorded in 2011 with the ATLAS detector at the CERN Large Hadron Collider. This dataset corresponds to an integrated luminosity of 4.9fb[superscript −1]. The diphoton invariant mass spectrum is observed to be in good agreement with the Standard Model expectation. In the context of the model proposed by Arkani–Hamed, Dimopoulos and Dvali, 95% confidence level lower limits of between 2.52 and 3.92 TeV are set on the ultraviolet cutoff scale M[subscript S] depending on the number of extra dimensions and the theoretical formalism used. In the context of the Randall–Sundrum model, a lower limit of 2.06 (1.00) TeV at 95% confidence level is set on the mass of the lightest graviton for couplings of k/M[subscript Pl] = 0.1(0.01). Combining with the ATLAS dilepton searches based on the 2011 data, the 95% confidence level lower limit on the Randall–Sundrum graviton mass is further tightened to 2.23 (1.03)TeV for k/M[subscript Pl] = 0.1(0.01). |
| first_indexed | 2024-09-23T09:36:34Z |
| format | Article |
| id | mit-1721.1/79756 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T09:36:34Z |
| publishDate | 2013 |
| publisher | IOP Publishing |
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| spelling | mit-1721.1/797562022-09-26T12:37:47Z Search for extra dimensions in diphoton events from proton–proton collisions at √ s = 7 TeV in the ATLAS detector at the LHC Taylor, Frank E. Massachusetts Institute of Technology. Department of Physics Taylor, Frank E. The large difference between the Planck scale and the electroweak scale, known as the hierarchy problem, is addressed in certain models through the postulate of extra spatial dimensions. A search for evidence of extra spatial dimensions in the diphoton channel has been performed using the full set of proton–proton collisions at √s = 7 TeV recorded in 2011 with the ATLAS detector at the CERN Large Hadron Collider. This dataset corresponds to an integrated luminosity of 4.9fb[superscript −1]. The diphoton invariant mass spectrum is observed to be in good agreement with the Standard Model expectation. In the context of the model proposed by Arkani–Hamed, Dimopoulos and Dvali, 95% confidence level lower limits of between 2.52 and 3.92 TeV are set on the ultraviolet cutoff scale M[subscript S] depending on the number of extra dimensions and the theoretical formalism used. In the context of the Randall–Sundrum model, a lower limit of 2.06 (1.00) TeV at 95% confidence level is set on the mass of the lightest graviton for couplings of k/M[subscript Pl] = 0.1(0.01). Combining with the ATLAS dilepton searches based on the 2011 data, the 95% confidence level lower limit on the Randall–Sundrum graviton mass is further tightened to 2.23 (1.03)TeV for k/M[subscript Pl] = 0.1(0.01). United States. Dept. of Energy National Science Foundation (U.S.) Brookhaven National Laboratory 2013-08-01T13:57:25Z 2013-08-01T13:57:25Z 2013-04 2013-02 Article http://purl.org/eprint/type/JournalArticle 1367-2630 http://hdl.handle.net/1721.1/79756 Aad, G, T Abajyan, B Abbott, J Abdallah, S Abdel Khalek, A A Abdelalim, O Abdinov, et al. “Search for extra dimensions in diphoton events from proton–proton collisions at √ s = 7 TeV in the ATLAS detector at the LHC.” New Journal of Physics 15, no. 4 (April 1, 2013): 043007. © CERN 2013 for the benefit of the ATLAS Collaboration https://orcid.org/0000-0002-7586-7253 en_US http://dx.doi.org/10.1088/1367-2630/15/4/043007 New Journal of Physics Creative Commons Attribution 3.0 http://creativecommons.org/licenses/by/3.0/ application/pdf IOP Publishing IOP |
| spellingShingle | Taylor, Frank E. Search for extra dimensions in diphoton events from proton–proton collisions at √ s = 7 TeV in the ATLAS detector at the LHC |
| title | Search for extra dimensions in diphoton events from proton–proton collisions at √ s = 7 TeV in the ATLAS detector at the LHC |
| title_full | Search for extra dimensions in diphoton events from proton–proton collisions at √ s = 7 TeV in the ATLAS detector at the LHC |
| title_fullStr | Search for extra dimensions in diphoton events from proton–proton collisions at √ s = 7 TeV in the ATLAS detector at the LHC |
| title_full_unstemmed | Search for extra dimensions in diphoton events from proton–proton collisions at √ s = 7 TeV in the ATLAS detector at the LHC |
| title_short | Search for extra dimensions in diphoton events from proton–proton collisions at √ s = 7 TeV in the ATLAS detector at the LHC |
| title_sort | search for extra dimensions in diphoton events from proton proton collisions at √ s 7 tev in the atlas detector at the lhc |
| url | http://hdl.handle.net/1721.1/79756 https://orcid.org/0000-0002-7586-7253 |
| work_keys_str_mv | AT taylorfranke searchforextradimensionsindiphotoneventsfromprotonprotoncollisionsats7tevintheatlasdetectoratthelhc |