Charmed Baryon Spectroscopy and Search for CP Violation in D0 2!Ks Pi+ Pi- at CDF PDF Download
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Author: Felix Wick
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Languages : en
Pages :
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Author: Felix Wick
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ISBN:
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Languages : en
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Author:
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Languages : en
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In this thesis two different analyses are presented, namely the measurements of the properties of $\Lambda_c(2595)^+$, $\Lambda_c(2625)^+$, $\Sigma_c(2455)^{++,0}$, and $\Sigma_c(2520)^{++,0}$ baryons as well as the search for $CP$ violation in the Dalitz plot of the decay $D^0 \to K_S^0\, \pi^+\, \pi^-$. Both studies are performed using data corresponding to 5.2\, \invfb respective 6.0\, \invfb of integrated luminosity from $p\bar{p}$ collisions at a center-of-mass energy of 1.96\, TeV, collected with the CDF~II detector at the Fermilab Tevatron. The masses and decay widths of the mentioned charmed baryon resonances are measured with uncertainties comparable to the world averages for $\Sigma_c$ states, and significantly smaller uncertainties than the world averages for excited $\Lambda_c^+$ states. No hints for any $CP$ violating effects in the resonant substructure of $D^0 \to K_S^0\, \pi^+\, \pi^-$ are found.
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Languages : en
Pages : 235
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In this thesis two different analyses are presented, namely the measurements of the properties of $\Lambda_c(2595)+̂$, $\Lambda_c(2625)+̂$, $\Sigma_c(2455){̂++,0}$, and $\Sigma_c(2520){̂++,0}$ baryons as well as the search for $CP$ violation in the Dalitz plot of the decay $D0̂ \to K_S0̂\,\pi+̂\,\pi-̂$. Both studies are performed using data corresponding to 5.2\,\invfb respective 6.0\,\invfb of integrated luminosity from $p\bar{p}$ collisions at a center-of-mass energy of 1.96\,TeV, collected with the CDFĨI detector at the Fermilab Tevatron. The masses and decay widths of the mentioned charmed baryon resonances are measured with uncertainties comparable to the world averages for $\Sigma_c$ states, and significantly smaller uncertainties than the world averages for excited $\Lambda_c+̂$ states. No hints for any $CP$ violating effects in the resonant substructure of $D0̂ \to K_S0̂\,\pi+̂\,\pi-̂$ are found.
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Languages : en
Pages : 7
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We measure CP-violating asymmetries of neutral charmed mesons in the modes D° → K−K and D° →?−?+ with the highest precision to date by using D° → K−?+ decays to correct detector asymmetries. An analysis of 385.8 fb−1 of data collected with the BaBar detector yields values of a{sup KK}{sub CP} = (0.00 ± 0.34 (stat.) ± 0.13 (syst.))% and a{sup?{pi}}{sub CP} = ( -0.24 ± 0.52 (stat.) ± 0.22 (syst.))%, which agree with Standard Model predictions.
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Languages : en
Pages : 5
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We report a measurement of the CP violating asymmetry in D° →??− decays using approximately 215,000 decays reconstructed in about 5.94 fb−1 of CDF data. We use the strong D*+ → D°?+ decay ('D* tag') to identify the flavor of the charmed meson at production time and exploit CP-conserving strong c{bar c} pair-production in p{bar p} collisions. Higher statistic samples of Cabibbo-favored D° → K−?+ decays with and without D* tag are used to highly suppress systematic uncertainties due to detector effects. The result, A{sub CP}(D° →?+?−) = [0.22 ± 0.24 (stat.) ± 0.11 (syst.)]%, is the world's most precise measurement to date and it is fully consistent with no CP violation.
Author: Cecilia Jarlskog
Publisher: World Scientific
ISBN: 9814632457
Category :
Languages : en
Pages : 733
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Contents:CP Phenomenology:Introduction to CP Violation (C Jarlskog)CP-Violation in the K0-K0-System (K Kleinknecht)The Quark Mixing Matrix, Charm Decays and B Decays (S Stone)The Question of CP Noninvariance — As Seen through the Eyes of Neutral Beauty (I I Bigi et al.)In Search of CP Noninvariance in Heavy Quark Systems (L-L Chau)CP Violation at High Energy e+e- Colliders (J Bernabéu & M B Gavela)CP Violation in the Standard Model with Four Families (A Datta & E A Paschos)CP Effects When Neutrinos are their Own Antiparticles (B Kayser)On Spontaneous CP Violation Triggered by Scalar Bosons (I I Bigi & A I Sanda)CP Violation and Left-Right Symmetry (R N Mohapatra)CP Violation and Supersymmetry (R N Mohapatra)Electric Dipole Moments (S M Barr & W H Marciano)Special Topics: The Strong CP Problem (R D Peccei)CP Violation and Cosmology (P Langacker)Nonleptonic Interactions:The 1/N Approach to Nonleptonic Weak Interactions (A J Buras)Chiral Perturbation Theory Approach to Weak Amplitudes (E de Rafael)What We Learnt from Weak Decays of Heavy Quarks (B Stech)Weak Hamiltonian on the Lattice (G Martinelli) Readership: High energy physicists. Keywords:CP Violation;Quark Mixing Matrix;Charm Decays;B Decays;Nonleptic Interactions;Heavy QuarksReview: “Similar material is most often available in journals, but the book accomplishes a valuable service in drawing it together … the one that will probably have the greatest utility and longest lifespan is the survey of B meson physics by I Bigi, V Khoze, N Uraltsev and A Sanda … Bigi et al. here provide the most thorough and readable account of the issues that I know of. I have seen no review comparable to the excellent summary of electric dipole moments by S Barr and W Marciano … the volume offers a generally readable entry into this field for a reader who has a basic background in particle physics.” John F Donoghue Science “… this book performs a very useful service for anyone active or interested in CP violation, both as a source of primary information and as a work of reference.” K J Peach J Phys. G: Nucl. Part. Phys.
Author: Michael Prim
Publisher: Springer Science & Business Media
ISBN: 3319057561
Category : Science
Languages : en
Pages : 111
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This thesis describes the thorough analysis of the rare B meson decay into φ K* on data taken by the Belle Collaboration at the B-meson-factory KEKB over 10 years. This reaction is very interesting, because it in principle allows the observation of CP-violation effects. In the Standard Model however, no CP violation in this reaction is expected. An observation of CP asymmetries thus immediately implies new physics. This thesis presents an amplitude analysis of this decay and the search for CP violation in detail and discusses methods to solve related problems: The quantification of multivariate dependence and the improvement of numeric evaluation speed of normalization integrals in amplitude analysis. In addition it provides an overview of the theory, experimental setup, (blind) statistical data analysis and estimation of systematic uncertainties.
Author:
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Category :
Languages : en
Pages : 4
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Author: Hamish Gordon
Publisher:
ISBN: 9783319070681
Category :
Languages : en
Pages : 176
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Author:
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ISBN:
Category :
Languages : en
Pages : 8
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We search for CP violation in a sample of 20,000 Cabibbo-suppressed decays, D+ → K+K{sub S}°?+?−, and 30,000 Cabibbo-favored decays, D{sub s}+ → K+K{sub S}°?+?−. We use 520 fb−1 of data recorded by the BABAR detector at the PEP-II asymmetric-energy e+e− collider operating at center of mass energies near 10.6 GeV. We search for CP violation in the difference between the T-odd asymmetries obtained using triple product correlations of the D+ (D{sub s}+) and D− (D{sub s}−) decays, respectively. The T violation parameter values obtained are ?{sub T} (D+) = (-12.0 ± 10.0{sub stat} ± 4.6{sub syst}) x 10−3 and ?{sub T}(D{sub s}+) = (-13.6 ± 7.7{sub stat} ± 3.4{sub syst}) x 10−3, which are consistent with the Standard Model expectations.
