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The authors present improved measurements of the branching fractions and CP asymmetries in the two-body decays B° 2!?°?°, B° 2!K°?° and B° 2!K?− as well as the quasi two-body B° 2!K1(1270)+?− and B° 2!K1(1400)+?− decays. These updated measurements are made using the complete set of BABAR data taken at the Y(4S) resonance, collected between 1999 and 2007 at the PEP-II collider at SLAC.
The authors present preliminary results of a search for several exclusive charmless hadronic B decays from electron-positron annihilation data collected by the BaBar detector near the Upsilon(4S) resonance. These include three-body decay modes with final states h"h{sup minus-plus}h" and h"h{sup minus-plus}pi°, and quasi-two-body decay modes with final states X°h and X°K{sub S}°, where h = pi or K and X° = eta-prime or omega. They find beta(B° --> rho{sup minus-plus}pi{sup "}) = (49"135{sup +6}) x 10−6 and beta(B --> eta-prime-K+) = (62"18{+-}8) x 10−6 and present upper limits for right other decays.
The authors present results for measurement of the decays to charmless final states of B{sup 0} meson to {eta}K{sup 0}, {eta}{omega}, a{sub 1}{sup +}(1260){pi}{sup -} with a{sub 1}{sup +}(1260) {yields} {pi}{sup +}{pi}{sup +}{pi}{sup -}, and of B{sup +} to {eta}{rho}{sup +}, {eta}{prime}{pi}{sup +}. Analyses are based on data taken with the BABAR detector at the PEP-II asymmetric e{sup +}e{sup -} collider at SLAC.
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.
This proceedings volume contains the latest results from the field of particle physics. The contributions cover the current status of all the Large Hadron Collider (LHC) experiments, the implications of the LHC for cosmology, and the search for dark matter and nuclear astrophysics. It also includes work on the current status of the future International Linear Collider (ILC).
This proceedings volume contains the latest results from the field of particle physics. The contributions cover the current status of all the Large Hadron Collider (LHC) experiments, the implications of the LHC for cosmology, and the search for dark matter and nuclear astrophysics. It also includes work on the current status of the future International Linear Collider (ILC).
Using 22.7M B{bar B} events collected with the BABAR detector at SLAC, we present preliminary measurements of the branching fractions for charmless hadronic decays of B mesons into two-body, quasi two-body and three-body final states with pions, kaons, and? and a0 resonances. In the search for exclusive B° →??−?°, we measure?(B° →?{sup ±}(770)?{sup {-+}}) = (28.9 ± 5.4 ± 4.3) x 10−6, together with the relative asymmetry?{sub phys} = -0.04 ± 0.18 {+-} 0.02. We also set the upper limits on B° →?°(770)?°, non-resonant B° →?+?−?°, B° → a0{sup {+-}}(→??{sup {+-}})?{sup {-+}} and B° → K°{bar K}°.
This book presents topics of major interest to the high energy physics community, as well as recent research results.
We present results for measurements of B{sup 0} meson decays to charmless final states {eta}K{sup 0}, {eta}{omega}, a{sub 1}{sup +}(1260){pi}{sup -} with a{sub 1}{sup +}(1260) {yields} {pi}{sup +}{pi}{sup +}{pi}{sup -}, {rho}{sup 0}K{sub S}{sup 0}, K{sub S}{sup 0}K{sub S}{sup 0}K{sub S}{sup 0}, and of B{sup +} to {eta}{rho}{sup +} and {eta}{prime}{pi}{sup +}. Analyses are based on data taken with the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC.