Direct photon cross section with conversions at CDF
We present a measurement of the isolated direct photon cross section in p p̄ collisions at √s = 1.8 TeV and |η| < 0.9 using data collected between 1994 and 1995 by the Collider Detector at Fermilab (CDF). The measurement is based on events where the photon converts into an electron-positron p...
| Auteurs principaux: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Langue: | English |
| Publié: |
2004
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| _version_ | 1826281152412909568 |
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| author | Acosta, D Affolder, T Albrow, MG Ambrose, D Amidei, D Anikeev, K Antos, J Apollinari, G Arisawa, T Artikov, A Ashmanskas, W Azfar, F Azzi-Bacchetta, P Bacchetta, N Bachacou, H Badgett, W Barbaro-Galtieri, A Barnes, V Barnett, B Baroiant, S Barone, M Bauer, G Bedeschi, F Behari, S Belforte, S |
| author_facet | Acosta, D Affolder, T Albrow, MG Ambrose, D Amidei, D Anikeev, K Antos, J Apollinari, G Arisawa, T Artikov, A Ashmanskas, W Azfar, F Azzi-Bacchetta, P Bacchetta, N Bachacou, H Badgett, W Barbaro-Galtieri, A Barnes, V Barnett, B Baroiant, S Barone, M Bauer, G Bedeschi, F Behari, S Belforte, S |
| author_sort | Acosta, D |
| collection | OXFORD |
| description | We present a measurement of the isolated direct photon cross section in p p̄ collisions at √s = 1.8 TeV and |η| < 0.9 using data collected between 1994 and 1995 by the Collider Detector at Fermilab (CDF). The measurement is based on events where the photon converts into an electron-positron pair in the material of the inner detector, resulting in a two track event signature. To remove π0 → γγ and η → γγ events from the data we use a new background subtraction technique which takes advantage of the tracking information available in a photon conversion event. We find that the shape of the cross section as a function of photon pT is poorly described by next-to-leading-order QCD predictions, but agrees with previous CDF measurements. |
| first_indexed | 2024-03-07T00:24:30Z |
| format | Journal article |
| id | oxford-uuid:7dabd79c-b4af-4def-bc71-f4bb6c8d1f4f |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T00:24:30Z |
| publishDate | 2004 |
| record_format | dspace |
| spelling | oxford-uuid:7dabd79c-b4af-4def-bc71-f4bb6c8d1f4f2022-03-26T21:05:10ZDirect photon cross section with conversions at CDFJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:7dabd79c-b4af-4def-bc71-f4bb6c8d1f4fEnglishSymplectic Elements at Oxford2004Acosta, DAffolder, TAlbrow, MGAmbrose, DAmidei, DAnikeev, KAntos, JApollinari, GArisawa, TArtikov, AAshmanskas, WAzfar, FAzzi-Bacchetta, PBacchetta, NBachacou, HBadgett, WBarbaro-Galtieri, ABarnes, VBarnett, BBaroiant, SBarone, MBauer, GBedeschi, FBehari, SBelforte, SWe present a measurement of the isolated direct photon cross section in p p̄ collisions at √s = 1.8 TeV and |η| < 0.9 using data collected between 1994 and 1995 by the Collider Detector at Fermilab (CDF). The measurement is based on events where the photon converts into an electron-positron pair in the material of the inner detector, resulting in a two track event signature. To remove π0 → γγ and η → γγ events from the data we use a new background subtraction technique which takes advantage of the tracking information available in a photon conversion event. We find that the shape of the cross section as a function of photon pT is poorly described by next-to-leading-order QCD predictions, but agrees with previous CDF measurements. |
| spellingShingle | Acosta, D Affolder, T Albrow, MG Ambrose, D Amidei, D Anikeev, K Antos, J Apollinari, G Arisawa, T Artikov, A Ashmanskas, W Azfar, F Azzi-Bacchetta, P Bacchetta, N Bachacou, H Badgett, W Barbaro-Galtieri, A Barnes, V Barnett, B Baroiant, S Barone, M Bauer, G Bedeschi, F Behari, S Belforte, S Direct photon cross section with conversions at CDF |
| title | Direct photon cross section with conversions at CDF |
| title_full | Direct photon cross section with conversions at CDF |
| title_fullStr | Direct photon cross section with conversions at CDF |
| title_full_unstemmed | Direct photon cross section with conversions at CDF |
| title_short | Direct photon cross section with conversions at CDF |
| title_sort | direct photon cross section with conversions at cdf |
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