Measurements of the angular distributions in the decays B→K( *)μ +μ - at CDF
We report an indirect search for nonstandard model physics using the flavor-changing neutral current decays B→K( *) μ +μ -. We reconstruct the decays and measure their angular distributions, as a function of q2=Mμμ2c2, where M μμ is the dimuon mass, in pp̄ collisions at √s=1.96TeV using a data sampl...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
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2012
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| _version_ | 1797090246271172608 |
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| author | Aaltonen, T Álvarez 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 Álvarez 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 an indirect search for nonstandard model physics using the flavor-changing neutral current decays B→K( *) μ +μ -. We reconstruct the decays and measure their angular distributions, as a function of q2=Mμμ2c2, where M μμ is the dimuon mass, in pp̄ collisions at √s=1.96TeV using a data sample corresponding to an integrated luminosity of 6.8fb -1. The transverse polarization asymmetry AT(2) and the time-reversal-odd charge-and-parity asymmetry A im are measured for the first time, together with the K * longitudinal polarization fraction F L and the muon forward-backward asymmetry A FB for the decays B0→K *0μ +μ - and B +→K *+μ +μ -. The B→K *μ +μ - forward-backward asymmetry in the most sensitive kinematic regime, 1≤q2<6GeV2/c2, is measured to be A FB=0.29-0.23+0.20(stat) ±0.07(syst), the most precise result to date. No deviations from the standard model predictions are observed. © 2012 American Physical Society. |
| first_indexed | 2024-03-07T03:15:46Z |
| format | Journal article |
| id | oxford-uuid:b5b77e89-0bec-4ce2-9ad3-1cb96a6d19f3 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T03:15:46Z |
| publishDate | 2012 |
| record_format | dspace |
| spelling | oxford-uuid:b5b77e89-0bec-4ce2-9ad3-1cb96a6d19f32022-03-27T04:35:46ZMeasurements of the angular distributions in the decays B→K( *)μ +μ - at CDFJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:b5b77e89-0bec-4ce2-9ad3-1cb96a6d19f3EnglishSymplectic Elements at Oxford2012Aaltonen, TÁlvarez 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 an indirect search for nonstandard model physics using the flavor-changing neutral current decays B→K( *) μ +μ -. We reconstruct the decays and measure their angular distributions, as a function of q2=Mμμ2c2, where M μμ is the dimuon mass, in pp̄ collisions at √s=1.96TeV using a data sample corresponding to an integrated luminosity of 6.8fb -1. The transverse polarization asymmetry AT(2) and the time-reversal-odd charge-and-parity asymmetry A im are measured for the first time, together with the K * longitudinal polarization fraction F L and the muon forward-backward asymmetry A FB for the decays B0→K *0μ +μ - and B +→K *+μ +μ -. The B→K *μ +μ - forward-backward asymmetry in the most sensitive kinematic regime, 1≤q2<6GeV2/c2, is measured to be A FB=0.29-0.23+0.20(stat) ±0.07(syst), the most precise result to date. No deviations from the standard model predictions are observed. © 2012 American Physical Society. |
| spellingShingle | Aaltonen, T Álvarez 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 the angular distributions in the decays B→K( *)μ +μ - at CDF |
| title | Measurements of the angular distributions in the decays B→K( *)μ +μ - at CDF |
| title_full | Measurements of the angular distributions in the decays B→K( *)μ +μ - at CDF |
| title_fullStr | Measurements of the angular distributions in the decays B→K( *)μ +μ - at CDF |
| title_full_unstemmed | Measurements of the angular distributions in the decays B→K( *)μ +μ - at CDF |
| title_short | Measurements of the angular distributions in the decays B→K( *)μ +μ - at CDF |
| title_sort | measurements of the angular distributions in the decays b k μ μ at cdf |
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