Measurements of direct CP violating asymmetries in charmless decays of strange bottom mesons and bottom baryons.
We report measurements of direct CP-violating asymmetries in charmless decays of neutral bottom hadrons to pairs of charged hadrons with the upgraded Collider Detector at the Fermilab Tevatron. Using a data sample corresponding to 1 fb(-1) of integrated luminosity, we obtain the first measurements o...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
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2011
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| _version_ | 1826288592381542400 |
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| author | Aaltonen, T Alvarez González, B Amerio, S Amidei, D Anastassov, A Annovi, A Antos, J Apollinari, G Appel, J Apresyan, A Arisawa, T Artikov, A Asaadi, J Ashmanskas, W Auerbach, B Aurisano, A Azfar, F Badgett, W Barbaro-Galtieri, A Barnes, V Barnett, B Barria, P Bartos, P Bauce, M Bauer, G |
| author_facet | Aaltonen, T Alvarez González, B Amerio, S Amidei, D Anastassov, A Annovi, A Antos, J Apollinari, G Appel, J Apresyan, A Arisawa, T Artikov, A Asaadi, J Ashmanskas, W Auerbach, B Aurisano, A Azfar, F Badgett, W Barbaro-Galtieri, A Barnes, V Barnett, B Barria, P Bartos, P Bauce, M Bauer, G |
| author_sort | Aaltonen, T |
| collection | OXFORD |
| description | We report measurements of direct CP-violating asymmetries in charmless decays of neutral bottom hadrons to pairs of charged hadrons with the upgraded Collider Detector at the Fermilab Tevatron. Using a data sample corresponding to 1 fb(-1) of integrated luminosity, we obtain the first measurements of direct CP violation in bottom strange mesons, A(CP)(B(s)(0)→K(-)π(+))=+0.39±0.15(stat)±0.08(syst), and bottom baryons, A(CP)(Λ(b)(0)→pπ(-))=+0.03±0.17(stat)±0.05(syst) and A(CP)(Λ(b)(0)→pK(-))=+0.37±0.17(stat)±0.03(syst). In addition, we measure CP violation in B(0)→K(+)π(-) decays with 3.5σ significance, A(CP)(B(0)→K(+)π(-))=-0.086±0.023(stat)±0.009(syst), in agreement with the current world average. Measurements of branching fractions of B(s)(0)→K(+)K(-) and B(0)→π(+)π(-) decays are also updated. |
| first_indexed | 2024-03-07T02:16:02Z |
| format | Journal article |
| id | oxford-uuid:a2466d07-0395-44c9-a5cf-f711233c66e2 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T02:16:02Z |
| publishDate | 2011 |
| record_format | dspace |
| spelling | oxford-uuid:a2466d07-0395-44c9-a5cf-f711233c66e22022-03-27T02:19:06ZMeasurements of direct CP violating asymmetries in charmless decays of strange bottom mesons and bottom baryons.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:a2466d07-0395-44c9-a5cf-f711233c66e2EnglishSymplectic Elements at Oxford2011Aaltonen, TAlvarez González, BAmerio, SAmidei, DAnastassov, AAnnovi, AAntos, JApollinari, GAppel, JApresyan, AArisawa, TArtikov, AAsaadi, JAshmanskas, WAuerbach, BAurisano, AAzfar, FBadgett, WBarbaro-Galtieri, ABarnes, VBarnett, BBarria, PBartos, PBauce, MBauer, GWe report measurements of direct CP-violating asymmetries in charmless decays of neutral bottom hadrons to pairs of charged hadrons with the upgraded Collider Detector at the Fermilab Tevatron. Using a data sample corresponding to 1 fb(-1) of integrated luminosity, we obtain the first measurements of direct CP violation in bottom strange mesons, A(CP)(B(s)(0)→K(-)π(+))=+0.39±0.15(stat)±0.08(syst), and bottom baryons, A(CP)(Λ(b)(0)→pπ(-))=+0.03±0.17(stat)±0.05(syst) and A(CP)(Λ(b)(0)→pK(-))=+0.37±0.17(stat)±0.03(syst). In addition, we measure CP violation in B(0)→K(+)π(-) decays with 3.5σ significance, A(CP)(B(0)→K(+)π(-))=-0.086±0.023(stat)±0.009(syst), in agreement with the current world average. Measurements of branching fractions of B(s)(0)→K(+)K(-) and B(0)→π(+)π(-) decays are also updated. |
| spellingShingle | Aaltonen, T Alvarez González, B Amerio, S Amidei, D Anastassov, A Annovi, A Antos, J Apollinari, G Appel, J Apresyan, A Arisawa, T Artikov, A Asaadi, J Ashmanskas, W Auerbach, B Aurisano, A Azfar, F Badgett, W Barbaro-Galtieri, A Barnes, V Barnett, B Barria, P Bartos, P Bauce, M Bauer, G Measurements of direct CP violating asymmetries in charmless decays of strange bottom mesons and bottom baryons. |
| title | Measurements of direct CP violating asymmetries in charmless decays of strange bottom mesons and bottom baryons. |
| title_full | Measurements of direct CP violating asymmetries in charmless decays of strange bottom mesons and bottom baryons. |
| title_fullStr | Measurements of direct CP violating asymmetries in charmless decays of strange bottom mesons and bottom baryons. |
| title_full_unstemmed | Measurements of direct CP violating asymmetries in charmless decays of strange bottom mesons and bottom baryons. |
| title_short | Measurements of direct CP violating asymmetries in charmless decays of strange bottom mesons and bottom baryons. |
| title_sort | measurements of direct cp violating asymmetries in charmless decays of strange bottom mesons and bottom baryons |
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