Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Branching Fractions And Cp Violating Asymmetries In Radiative B Decays To Eta K Gamma
Download Branching Fractions And Cp Violating Asymmetries In Radiative B Decays To Eta K Gamma full books in PDF, epub, and Kindle. Read online Branching Fractions And Cp Violating Asymmetries In Radiative B Decays To Eta K Gamma ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Branching Fractions and CP-Violating Asymmetries in Radiative B Decays to Eta K Gamma by :
Download or read book Branching Fractions and CP-Violating Asymmetries in Radiative B Decays to Eta K Gamma written by and published by . This book was released on 2008 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present measurements of the CP-violation parameters S and C for the radiative decay B° →?K{sub S}°?; for B →?K? they also measure the branching fractions and for B →?K+? the time-integrated charge asymmetry?{sub ch}. The data, collected with the BABAR detector at the Stanford Linear Accelerator Center, represent 465 x 106 B{bar B} pairs produced in e+e− annihilation. The results are S = -0.18{sub -0.46}{sup +0.49} ± 0.12, C = -0.32{sub -0.39}{sup +0.40} ± 0.07,?(B° →?K°?) = (7.1{sub -2.0}{sup +2.1} ± 0.4) x 10−6,?(B+ →?K+?) = (7.7 ± 1.0 ± 0.4) x 10−6, and?{sub ch} = ( -9.0{sub -9.8}{sup +10.4} ± 1.4) x 10−2. The first error quoted is statistical and the second systematic.
Book Synopsis Measurement of Branching Fractions in Radiative BDecays to Eta K Gamma and Search for B Decays to Eta' K Gamma by : B. Aubert
Download or read book Measurement of Branching Fractions in Radiative BDecays to Eta K Gamma and Search for B Decays to Eta' K Gamma written by B. Aubert and published by . This book was released on 2006 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present measurements of the B {yields} {eta}K{gamma} branching fractions and upper limits for the B {yields} {eta}'K{gamma} branching fractions. For B{sup +} {yields} {eta}K{sup +}{gamma} they also measure the time-integrated charge asymmetry. The data sample, collected with the BABAR detector at the Stanford Linear Accelerator Center, represents 232 x 10{sup 6} produced B{bar B} pairs. The results for branching fractions and upper limits at 90% C.L. in units of 10{sup -6} are: {Beta}(B{sup 0} {yields} {eta}K{sup 0}{gamma}) = 11.3{sub -2.6}{sup +2.8} {+-} 0.6, {Beta}(B{sup +} {yields} {eta}K{sup +}{gamma}) = 10.0 {+-} 1.3 {+-} 0.5, {Beta}(B{sup 0} {yields} {eta}'K{sup 0}{gamma})
Book Synopsis Measurement of the Branching Fraction and Search for Direct CP-Violation in the Radiative Decay B to K*Gamma with the BABAR Detector by :
Download or read book Measurement of the Branching Fraction and Search for Direct CP-Violation in the Radiative Decay B to K*Gamma with the BABAR Detector written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The presented study of the radiative electroweak "penguin"--Decay B->K*(892)gamma, proceeding by the b->sgamma "loop"-transition, provides an important test of the Standard Model and a candidate of the search for New Physics. The used data sample has been recorded at the Y(4S) resonance with the BABAR detector at the asymmetric electron-positron- collider PEP-II of the Stanford Linear Accelerator Center (SLAC) in California. The B->K*gamma branching fractions are measured in four K*-decay modes. A search for direct CP-violation in the B->K*gamma mode has also been carried out.
Book Synopsis Measurements of Branching Fractions and Time-Dependent CP-Violating Asymmetries in B to Eta' K Decays by :
Download or read book Measurements of Branching Fractions and Time-Dependent CP-Violating Asymmetries in B to Eta' K Decays written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of Ratios of Branching Fractions and CP-Violating Asymmetries of B+/- --] D*K +/- Decays by :
Download or read book Measurement of Ratios of Branching Fractions and CP-Violating Asymmetries of B+/- --] D*K +/- Decays written by and published by . This book was released on 2008 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors report a study of B{sup ±} 2!D*K{sup ±} decays with D* decaying to D[pi]° or D[gamma], using 383 x 106 B{bar B} pairs collected at the [Upsilon](4S) resonance with the BABAR detector at the SLAC PEP-II B-Factory. The D meson decays under study include a non-CP mode (K{sup ±}[pi]{sup {-+}}), CP-even modes (K{sup ±}K{sup {-+}}, [pi]{sup ±}[pi]{sup {-+}}) and CP-odd modes (K{sub S}°[pi]°, K{sub S}°[phi], K{sub S}°[omega]). They measure ratios (R*{sub CP±}) of branching fractions of decays to CP eigenmode states and to flavor-specific states as well as CP asymmetries A*{sub CP±} = -0.11 ± 0.09 ± 0.01, R*{sub CP+} = 1.31 ± 0.13 ± 0.04, and A*{sub CP-} = 0.06 ± 0.10 {+-} 0.02, R*{sub CP-} = 1.10 {+-} 0.12 {+-} 0.04, where the first error is statistical and the second error is systematic. Translating the results into an alternative parameterization, widely used for related measurements, they obtain x*+ = 0.11 {+-} 0.06 {+-} 0.02 and x* = 0.00 {+-} 0.06 {+-} 0.01. No significant CP-violating charge asymmetry is found in either the flavor-specific mode D 2!K{sup {+-}}[pi]{sup {-+}} or in B{sup {+-}} 2!D*[pi]{sup {+-}} decays.
Book Synopsis Measurements of Branching Fraction and CP Violation InB Meson Rare Decays to Final States Containing Eta Or Eta' Mesons in the BaBar Experiment at SLAC. by :
Download or read book Measurements of Branching Fraction and CP Violation InB Meson Rare Decays to Final States Containing Eta Or Eta' Mesons in the BaBar Experiment at SLAC. written by and published by . This book was released on 2007 with total page 383 pages. Available in PDF, EPUB and Kindle. Book excerpt: Note that the main goal of this thesis work is the measurement of the branching fractions, charge asymmetry, and Time-Dependent CP Violation in [eta]'K° mode. All other measurements are reported here for completion because they are connected by similar physics arguments. They are part of the Milan analysis activity, done by undergraduate students. They should not be considered as done in this thesis work. The measurements of the two body-modes [eta][eta], [eta][phi], and [eta]'[phi] are used to determine a theoretical bound based on SU(3) flavor symmetry for the difference between SM prediction and the experimental measurements of CP violation parameters in b → s loop-dominated modes. In general for this estimation we need to measure the branching fractions (or upper limits) of neutral B decays to two-body modes with [eta]', [eta], [phi], [omega], [pi]°, K°, K*° [13, 14, 15, 16]. There is an important issue related to the branching fractions of [eta]'K (charged and neutral) modes. Since the discover of B → [eta]'K in 1997 [17] with high branching fraction (higher than expected), it was found that the corresponding mode with [eta] is suppressed. This fact was pointed out by Lipkin in 1991 [18]. In particular, using arguments concerning the [eta]-[eta]' mixing angle and the parity of K or K* we can say that [eta]'K and [eta]K* are enhanced, while [eta]K and [eta]'K* are suppressed. This scheme is experimentally verified. The branching fraction of all these modes are already measured, but the B° → [eta]K°. So it is important to measure also this mode to complete the scenario. Finally we report on the measurements of the radiative modes B → [eta]'K[gamma] and of the three-body mode B → [eta]'[eta]'K. Both cases are good candidates to manifest effects due to NP in CP violations [19, 20]. For all measurements we use an unbinned maximum likelihood fit to extract the number of signal yields and CP parameters. To perform these fits we have developed a flexible program in C++ language, called MiFit, which has taken a consistent part of the work described in this thesis. This program is used in all Milan analyses. All these measurements have been presented in conferences and published in Physical Review Letters or Physics Review D (Rapid Communication). These measurements are official BABAR results, approved by the Collaboration. The thesis is structured in eight chapters. In the first chapter we describe the CP violation and how it is explained in the SM. We give the theoretical description of the modes studied in this thesis. We report also the latest main results for the CP violation. In the second chapter we describe the BABAR detector with a description of each sub-detector. In the third chapter we describe the software used by the collaboration, in particular the code used in the events reconstruction, which is described in the fourth chapter. In the fifth chapter we describe the software used to selected the events and the MiFit program. After that, in the sixth chapter we show the discriminating variables used for the events selection and how the selection is done. In the last two chapters we report the analyses and results of the branching fractions and charge asymmetries measurements and the time-dependent CP asymmetries analysis of the mode B° → [eta]'K°, respectively.
Book Synopsis B Physics And Cp Violation: Proceedings Of The 2nd International Conference by : Thomas E Browder
Download or read book B Physics And Cp Violation: Proceedings Of The 2nd International Conference written by Thomas E Browder and published by World Scientific. This book was released on 1998-04-04 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: CP violation is one of the most subtle effects in the Standard Model of particle physics and may be the first clue to the physics that lies beyond. Charge conjugation, C, and parity, P, are symmetries of particle interactions. C corresponds to the operation of replacing a particle by its antiparticle, while P is the operation of mirror reflection. Before 1956, it was believed that these were also symmetries of the interactions of elementary particles. In 1956, C S Wu found evidence for P violation in the weak interaction. Theorists proposed that the combination of CP would be a symmetry of the weak interaction. In 1964, Christenson, Cronin, Fitch and Turlay found the first evidence for the violation of CP symmetry in the decays of kaons.Although Kobayashi and Maskawa then showed how the Standard Model can accommodate the observed CP violation, Wolfenstein pointed out that it is also possible that there is a new interaction in addition to the usual four, called the superweak interaction, which is responsible for the asymmetry. To test this idea, the observation of a different type of asymmetry, called direct CP violation, is required; in the kaon sector, very precise measurements of the ratio of kaon decay rates are necessary. In B decay modes where a second order weak process whimisically named “penguin” interferes with another suppressed, first order “tree” amplitude, it may also be possible to observe these direct CP-violating effects.B physics and CP violation is now one of the major growth areas in high energy physics. Nearly every major high energy physics laboratory now has a project underway to observe the large CP asymmetries expected in the B sector and to test the consistency of the Standard Model. The unitarity of the Kobayashi-Maskawa mixing matrix in the Standard Model implies the existence of three phases, called alpha, beta and gamma, which can be determined by the measurements of CP asymmetries in B decays. About 200 participants gathered in Hawaii in March 1997 to discuss the progress in the field, and this important book constitutes the proceedings of that conference.
Book Synopsis Measurements of the Branching Fraction and CP-Violating Asymmetries of B[sup 0]--] K[sup 0][pi][sup 0] Decays by :
Download or read book Measurements of the Branching Fraction and CP-Violating Asymmetries of B[sup 0]--] K[sup 0][pi][sup 0] Decays written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: No abstract prepared.
Book Synopsis Legge sul diritto di bollo, 13 novembre 1899 by :
Download or read book Legge sul diritto di bollo, 13 novembre 1899 written by and published by . This book was released on 1900 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurements of B -] V Gamma Decays by :
Download or read book Measurements of B -] V Gamma Decays written by and published by . This book was released on 2010 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: The standard model has been highly successful at describing current experimental data. However, extensions of the standard model predict particles that have masses at energy scales that are above the electroweak scale. The flavor-changing neutral current processes of the B meson are sensitive to the influences of these new physics contributions. These processes proceed through loop diagrams, thus allowing new physics to enter at the same order as the standard model. New physics may contribute to the enhancement or suppression of rate asymmetries or the decay rates of these processes. The transition B → V[gamma] (V = K*(892), [rho](770), [omega](782), [phi](1020)) represents radiative decays of the B meson that proceed through penguin processes. Hadronic uncertainties limit the theoretical accuracy of the prediction of the branching fractions. However, uncertainties, both theoretical and experimental, are much reduced when considering quantities involving ratios of branching fractions, such as CP or isospin asymmetries. The most dominant exclusive radiative b → s transition is B → K*[gamma]. We present the best measurements of the branching fractions, direct CP, and isospin asymmetries of B → K*[gamma]. The analogous b → d transitions are B → [rho][gamma] and B → [omega][gamma], which are suppressed by a factor of.
Book Synopsis Measurement of the Branching Fraction and Search for Direct CP Violation in the Radiative Decay B→K*γ [B K Gamma] with the BABAR Detector by : Tilmann Colberg
Download or read book Measurement of the Branching Fraction and Search for Direct CP Violation in the Radiative Decay B→K*γ [B K Gamma] with the BABAR Detector written by Tilmann Colberg and published by . This book was released on 2002 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurements of the Branching Fraction and CP-Violating Asymmetries of B°--] K°s[pi]° Decays by :
Download or read book Measurements of the Branching Fraction and CP-Violating Asymmetries of B°--] K°s[pi]° Decays written by and published by . This book was released on 2004 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Branching ratio and direct CP-violating rate asymmetry of the rare decays B → K*γ [K gamma] and B → ργ [rhogamma] by : Christoph Greub
Download or read book Branching ratio and direct CP-violating rate asymmetry of the rare decays B → K*γ [K gamma] and B → ργ [rhogamma] written by Christoph Greub and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book B K Gamma written by Tilmann Colberg and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis MEASUREMENTS OF BRANCHING FRACTIONS AND CP VIOLATING ASYMMETRIES IN B0 ---] PI+ PI-, K+ PI-, K+ K- DECAYS. by :
Download or read book MEASUREMENTS OF BRANCHING FRACTIONS AND CP VIOLATING ASYMMETRIES IN B0 ---] PI+ PI-, K+ PI-, K+ K- DECAYS. written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present measurements of branching fractions and CP-violating asymmetries for neutral B meson decays to two-body final states of charged pions and kaons. The results are obtained from a data sample of about 88 million[Upsilon](4S)[yields] B[bar B] decays collected between 1999 and 2002 with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. From a time-independent fit we measure the charge-averaged branching fractions[Beta](B[sup 0][yields][pi][sup+][pi][sup -])= (4.7[+-] 0.6[+-] 0.2) x 10[sup -6] and[Beta](B[sup 0][yields] K[sup+][pi][sup -])= (17.9[+-] 0.9[+-] 0.7) x 10[sup -6], where the first uncertainty is statistical and the second is systematic; the 90% confidence level upper limit[Beta](B[sup 0][yields] K[sup+]K[sup -])
Book Synopsis Branching ratio and direct CP-violating rate asymmetry of the rare decays B → K*[gamma] and B → [rho gamma]1 by :
Download or read book Branching ratio and direct CP-violating rate asymmetry of the rare decays B → K*[gamma] and B → [rho gamma]1 written by and published by . This book was released on 1998 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurements of Branching Fractions and CP-Violating Asymmetries in B Meson Decays to Charmless Two-Body States Containing a K[sup 0]. by :
Download or read book Measurements of Branching Fractions and CP-Violating Asymmetries in B Meson Decays to Charmless Two-Body States Containing a K[sup 0]. written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present measurements of branching fractions and CP-violating asymmetries in decays of B mesons to two-body final states containing a K[sup 0]. The results are based on a data sample of approximately 88 million [Upsilon](4S) [yields] B[bar B] decays collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC.
![Download Measurement of Ratios of Branching Fractions and CP-Violating Asymmetries of B+/- --] D*K +/- Decays PDF Online Free](https://books.google.com/books/content/images/frontcover/9bVDnQAACAAJ?fife=w200-h370)
![Download Measurements of the Branching Fraction and CP-Violating Asymmetries of B[sup 0]--] K[sup 0][pi][sup 0] Decays PDF Online Free](https://books.google.com/books/content/images/frontcover/gzDFjwEACAAJ?fife=w200-h370)
![Download Measurements of B -] V Gamma Decays PDF Online Free](https://books.google.com/books/content/images/frontcover/3dRBnQAACAAJ?fife=w200-h370)
![Download Measurement of the Branching Fraction and Search for Direct CP Violation in the Radiative Decay B→K*γ [B K Gamma] with the BABAR Detector PDF Online Free](https://books.google.com/books/content/images/frontcover/177CzQEACAAJ?fife=w200-h370)
![Download Measurements of the Branching Fraction and CP-Violating Asymmetries of B°--] K°s[pi]° Decays PDF Online Free](https://books.google.com/books/content/images/frontcover/gyc2nQAACAAJ?fife=w200-h370)
![Download Branching ratio and direct CP-violating rate asymmetry of the rare decays B → K*γ [K gamma] and B → ργ [rhogamma] PDF Online Free](https://books.google.com/books/content/images/frontcover/1CPGzQEACAAJ?fife=w200-h370)
![Download MEASUREMENTS OF BRANCHING FRACTIONS AND CP VIOLATING ASYMMETRIES IN B0 ---] PI+ PI-, K+ PI-, K+ K- DECAYS. PDF Online Free](https://books.google.com/books/content/images/frontcover/LWLLjwEACAAJ?fife=w200-h370)
![Download Branching ratio and direct CP-violating rate asymmetry of the rare decays B → K*[gamma] and B → [rho gamma]1 PDF Online Free](https://books.google.com/books/content/images/frontcover/U32PzQEACAAJ?fife=w200-h370)
![Download Measurements of Branching Fractions and CP-Violating Asymmetries in B Meson Decays to Charmless Two-Body States Containing a K[sup 0]. PDF Online Free](https://books.google.com/books/content/images/frontcover/JWnCjwEACAAJ?fife=w200-h370)
