Measurements of Direct CP Violating Asymmetries in Charmless Decays of Strange Bottom Mesons and Bottom Baryons PDF Download
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Languages : en
Pages : 7
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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{sub CP}(B{sub s}° → K−?) = +0.39 ± 0.15 (stat) ± 0.08 (syst), and botton baryons, A{sub CP}(?{sub b}° → p?−) = + 0.03 ± 0.17 (stat) ± 0.05 (syst) and A{sub CP} (?{sub b}° → pK−) = +0.37 ± 0.17 (stat) ± 0.03 (syst). In addition, they measure CP violation in B° → K+?− decays with 3.5? significance, A{sub CP} (B° → K+?−) = -0.086 ± 0.023 (stat) ± 0.009 (syst), in agreement with the current world average. Measurements of branching fractions of B{sub s}° → K+K− and B° →?+?− decays are also updated.
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Languages : en
Pages : 7
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Book 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{sub CP}(B{sub s}° → K−?) = +0.39 ± 0.15 (stat) ± 0.08 (syst), and botton baryons, A{sub CP}(?{sub b}° → p?−) = + 0.03 ± 0.17 (stat) ± 0.05 (syst) and A{sub CP} (?{sub b}° → pK−) = +0.37 ± 0.17 (stat) ± 0.03 (syst). In addition, they measure CP violation in B° → K+?− decays with 3.5? significance, A{sub CP} (B° → K+?−) = -0.086 ± 0.023 (stat) ± 0.009 (syst), in agreement with the current world average. Measurements of branching fractions of B{sub s}° → K+K− and B° →?+?− decays are also updated.
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Category :
Languages : en
Pages : 8
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Author: Daniel O'Hanlon
Publisher: Springer
ISBN: 3030022064
Category : Science
Languages : en
Pages : 215
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This book highlights two essential analyses of data collected during the LHCb experiment, based on the Large Hadron Collider at CERN. The first comprises the first observation and studies of matter-antimatter asymmetries in two three-body b-baryon decays, paving the way for more precise measurements of the relatively unknown decay properties of b-baryon decays. The second is an analysis of a charged B meson decay to three charged pions, where previously large matter-antimatter asymmetries were observed in a model-independent analysis. Here a model of the decay amplitude is constructed using the unitarity-conserving ‘K-matrix’ model for the scalar contributions, so as to gain an understanding of how the previously observed matter-antimatter asymmetries arise; further, the model’s construction yields the most precise and comprehensive study of this decay mode to date.
Author: Herwig Schopper
Publisher: World Scientific
ISBN: 9814644161
Category : Science
Languages : en
Pages : 452
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The book is a compilation of the most important experimental results achieved during the past 60 years at CERN - from the mid-1950s to the latest discovery of the Higgs particle. Covering the results from the early accelerators at CERN to those most recent at the LHC, the contents provide an excellent review of the achievements of this outstanding laboratory. Not only presented is the impressive scientific progress achieved during the past six decades, but also demonstrated is the special way in which successful international collaboration exists at CERN.
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Languages : en
Pages :
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We present preliminary results of the measurement of branching fractions and CP violating asymmetries in B meson decays to [eta][prime]K and [phi]K*. We update also the results of the direct CP violation searches with BABAR in charmless hadronic B meson decays.
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Languages : en
Pages :
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Author: Sabato Leo
Publisher: Springer
ISBN: 3319079298
Category : Science
Languages : en
Pages : 146
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This thesis reports on the final measurement of the flavor-mixing phase in decays of strange-bottom mesons (B_s) into J/psi and phi mesons performed in high-energy proton-antiproton collisions recorded by the Collider Experiment at Fermilab. Interference occurs between direct decays and decays following virtual particle-antiparticle transitions (B_s-antiB_s). The phase difference between transition amplitudes (“mixing phase”) is observable and extremely sensitive to contributions from non-standard-model particles or interactions that may be very hard to detect otherwise – a fact that makes the precise measurement of the B_s mixing phase one of the most important goals of particle physics. The results presented include a precise determination of the mixing phase and a suite of other important supplementary results. All measurements are among the most precise available from a single experiment and provide significantly improved constraints on the phenomenology of new particles and interactions.
Author: Emanuele Di Marco
Publisher:
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Category :
Languages : en
Pages : 7
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We present recent results on time integrated and time dependent CP violation for charmless hadronic B decays using BABAR detector at the PEP-II B-factory.
Author: Morris Nicholas Danielson
Publisher:
ISBN:
Category :
Languages : en
Pages : 286
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Author: Alexandre Valerievich Telnov
Publisher:
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Category :
Languages : en
Pages : 446
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