Search for heavy, long-lived neutralinos that decay to photons at CDF II using photon timing
We present the results of the first hadron collider search for heavy, long-lived neutralinos that decay via χ10→γG in gauge-mediated supersymmetry breaking models. Using an integrated luminosity of 570±34pb-1 of pp̄ collisions at s=1.96TeV, we select γ+jet+missing transverse energy candidate events...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2008
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| _version_ | 1826290827424432128 |
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| author | Aaltonen, T Adelman, J Akimoto, T Albrow, MG González, B Amerio, S Amidei, D Anastassov, A Annovi, A Antos, J Apollinari, G Apresyan, A Arisawa, T Artikov, A Ashmanskas, W Attal, A Aurisano, A Azfar, F Azzurri, P Badgett, W Barbaro-Galtieri, A Barnes, V Barnett, B Bartsch, V Bauer, G |
| author_facet | Aaltonen, T Adelman, J Akimoto, T Albrow, MG González, B Amerio, S Amidei, D Anastassov, A Annovi, A Antos, J Apollinari, G Apresyan, A Arisawa, T Artikov, A Ashmanskas, W Attal, A Aurisano, A Azfar, F Azzurri, P Badgett, W Barbaro-Galtieri, A Barnes, V Barnett, B Bartsch, V Bauer, G |
| author_sort | Aaltonen, T |
| collection | OXFORD |
| description | We present the results of the first hadron collider search for heavy, long-lived neutralinos that decay via χ10→γG in gauge-mediated supersymmetry breaking models. Using an integrated luminosity of 570±34pb-1 of pp̄ collisions at s=1.96TeV, we select γ+jet+missing transverse energy candidate events based on the arrival time of a high-energy photon at the electromagnetic calorimeter as measured with a timing system that was recently installed on the CDF II detector. We find 2 events, consistent with the background estimate of 1.3±0.7 events. While our search strategy does not rely on model-specific dynamics, we set cross section limits and place the world-best 95% C.L. lower limit on the χ 10 mass of 101GeV/c2 at τχ 10=5ns. © 2008 The American Physical Society. |
| first_indexed | 2024-03-07T02:50:09Z |
| format | Journal article |
| id | oxford-uuid:ad680191-9e0f-4ec5-be19-bbc992b5a016 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T02:50:09Z |
| publishDate | 2008 |
| record_format | dspace |
| spelling | oxford-uuid:ad680191-9e0f-4ec5-be19-bbc992b5a0162022-03-27T03:35:25ZSearch for heavy, long-lived neutralinos that decay to photons at CDF II using photon timingJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:ad680191-9e0f-4ec5-be19-bbc992b5a016EnglishSymplectic Elements at Oxford2008Aaltonen, TAdelman, JAkimoto, TAlbrow, MGGonzález, BAmerio, SAmidei, DAnastassov, AAnnovi, AAntos, JApollinari, GApresyan, AArisawa, TArtikov, AAshmanskas, WAttal, AAurisano, AAzfar, FAzzurri, PBadgett, WBarbaro-Galtieri, ABarnes, VBarnett, BBartsch, VBauer, GWe present the results of the first hadron collider search for heavy, long-lived neutralinos that decay via χ10→γG in gauge-mediated supersymmetry breaking models. Using an integrated luminosity of 570±34pb-1 of pp̄ collisions at s=1.96TeV, we select γ+jet+missing transverse energy candidate events based on the arrival time of a high-energy photon at the electromagnetic calorimeter as measured with a timing system that was recently installed on the CDF II detector. We find 2 events, consistent with the background estimate of 1.3±0.7 events. While our search strategy does not rely on model-specific dynamics, we set cross section limits and place the world-best 95% C.L. lower limit on the χ 10 mass of 101GeV/c2 at τχ 10=5ns. © 2008 The American Physical Society. |
| spellingShingle | Aaltonen, T Adelman, J Akimoto, T Albrow, MG González, B Amerio, S Amidei, D Anastassov, A Annovi, A Antos, J Apollinari, G Apresyan, A Arisawa, T Artikov, A Ashmanskas, W Attal, A Aurisano, A Azfar, F Azzurri, P Badgett, W Barbaro-Galtieri, A Barnes, V Barnett, B Bartsch, V Bauer, G Search for heavy, long-lived neutralinos that decay to photons at CDF II using photon timing |
| title | Search for heavy, long-lived neutralinos that decay to photons at CDF II using photon timing |
| title_full | Search for heavy, long-lived neutralinos that decay to photons at CDF II using photon timing |
| title_fullStr | Search for heavy, long-lived neutralinos that decay to photons at CDF II using photon timing |
| title_full_unstemmed | Search for heavy, long-lived neutralinos that decay to photons at CDF II using photon timing |
| title_short | Search for heavy, long-lived neutralinos that decay to photons at CDF II using photon timing |
| title_sort | search for heavy long lived neutralinos that decay to photons at cdf ii using photon timing |
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