Search for exotic S=-2 baryons in pp̄ collisions at s=1.96TeV
A search for a manifestly exotic S=-2 baryon state decaying to Ξ-π-, and its neutral partner decaying to Ξ-π+, has been performed using 220pb-1 of pp̄ collisions at s=1.96TeV collected by the Collider Detector at Fermilab. The Ξ- trajectories were measured in a silicon tracker before their decay, re...
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| Fformat: | Journal article |
| Iaith: | English |
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2007
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| _version_ | 1826271916697059328 |
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| author | Abulencia, A Adelman, J Affolder, T Akimoto, T Albrow, MG Ambrose, D Amerio, S Amidei, D Anastassov, A Anikeev, K Annovi, A Antos, J Aoki, M Apollinari, G Arguin, J Arisawa, T Artikov, A Ashmanskas, W Attal, A Azfar, F Azzi-Bacchetta, P Azzurri, P Bacchetta, N Badgett, W Barbaro-Galtieri, A |
| author_facet | Abulencia, A Adelman, J Affolder, T Akimoto, T Albrow, MG Ambrose, D Amerio, S Amidei, D Anastassov, A Anikeev, K Annovi, A Antos, J Aoki, M Apollinari, G Arguin, J Arisawa, T Artikov, A Ashmanskas, W Attal, A Azfar, F Azzi-Bacchetta, P Azzurri, P Bacchetta, N Badgett, W Barbaro-Galtieri, A |
| author_sort | Abulencia, A |
| collection | OXFORD |
| description | A search for a manifestly exotic S=-2 baryon state decaying to Ξ-π-, and its neutral partner decaying to Ξ-π+, has been performed using 220pb-1 of pp̄ collisions at s=1.96TeV collected by the Collider Detector at Fermilab. The Ξ- trajectories were measured in a silicon tracker before their decay, resulting in a sample with low background and excellent position resolution. No evidence was found for S=-2 pentaquark candidates in the invariant mass range of 1600-2100MeV/c2. Upper limits on the product of pentaquark production cross section times its branching fraction to Ξ-π+,-, relative to the cross section of the well-established Ξ(1530) resonance, are presented for neutral and doubly negative candidates with pT>2GeV/c and |y|<1 as a function of pentaquark mass. At 1862MeV/c2, these upper limits for neutral and doubly negative final states were found to be 3.2% and 1.7% at the 90% confidence level, respectively. © 2007 The American Physical Society. |
| first_indexed | 2024-03-06T22:04:17Z |
| format | Journal article |
| id | oxford-uuid:4f9f3d79-0849-45a5-91db-f09e2c287ef4 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T22:04:17Z |
| publishDate | 2007 |
| record_format | dspace |
| spelling | oxford-uuid:4f9f3d79-0849-45a5-91db-f09e2c287ef42022-03-26T16:08:31ZSearch for exotic S=-2 baryons in pp̄ collisions at s=1.96TeVJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:4f9f3d79-0849-45a5-91db-f09e2c287ef4EnglishSymplectic Elements at Oxford2007Abulencia, AAdelman, JAffolder, TAkimoto, TAlbrow, MGAmbrose, DAmerio, SAmidei, DAnastassov, AAnikeev, KAnnovi, AAntos, JAoki, MApollinari, GArguin, JArisawa, TArtikov, AAshmanskas, WAttal, AAzfar, FAzzi-Bacchetta, PAzzurri, PBacchetta, NBadgett, WBarbaro-Galtieri, AA search for a manifestly exotic S=-2 baryon state decaying to Ξ-π-, and its neutral partner decaying to Ξ-π+, has been performed using 220pb-1 of pp̄ collisions at s=1.96TeV collected by the Collider Detector at Fermilab. The Ξ- trajectories were measured in a silicon tracker before their decay, resulting in a sample with low background and excellent position resolution. No evidence was found for S=-2 pentaquark candidates in the invariant mass range of 1600-2100MeV/c2. Upper limits on the product of pentaquark production cross section times its branching fraction to Ξ-π+,-, relative to the cross section of the well-established Ξ(1530) resonance, are presented for neutral and doubly negative candidates with pT>2GeV/c and |y|<1 as a function of pentaquark mass. At 1862MeV/c2, these upper limits for neutral and doubly negative final states were found to be 3.2% and 1.7% at the 90% confidence level, respectively. © 2007 The American Physical Society. |
| spellingShingle | Abulencia, A Adelman, J Affolder, T Akimoto, T Albrow, MG Ambrose, D Amerio, S Amidei, D Anastassov, A Anikeev, K Annovi, A Antos, J Aoki, M Apollinari, G Arguin, J Arisawa, T Artikov, A Ashmanskas, W Attal, A Azfar, F Azzi-Bacchetta, P Azzurri, P Bacchetta, N Badgett, W Barbaro-Galtieri, A Search for exotic S=-2 baryons in pp̄ collisions at s=1.96TeV |
| title | Search for exotic S=-2 baryons in pp̄ collisions at s=1.96TeV |
| title_full | Search for exotic S=-2 baryons in pp̄ collisions at s=1.96TeV |
| title_fullStr | Search for exotic S=-2 baryons in pp̄ collisions at s=1.96TeV |
| title_full_unstemmed | Search for exotic S=-2 baryons in pp̄ collisions at s=1.96TeV |
| title_short | Search for exotic S=-2 baryons in pp̄ collisions at s=1.96TeV |
| title_sort | search for exotic s 2 baryons in pp collisions at s 1 96tev |
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