Bulletin of the American Physical Society
2009 APS April Meeting
Volume 54, Number 4
Saturday–Tuesday, May 2–5, 2009; Denver, Colorado
Session Q9: Mini-Symposium on Heavy Flavor: CP Violation and Rare Decays |
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Sponsoring Units: DPF Chair: William Wisniewski, Stanford Linear Accelerator Center Room: Governor's Square 11 |
Monday, May 4, 2009 10:45AM - 11:21AM |
Q9.00001: Rare B Decays and CP Violation from BaBar and Belle Invited Speaker: |
Monday, May 4, 2009 11:21AM - 11:33AM |
Q9.00002: Amplitude Analysis of the Decay~$B^0 \to K^+\pi^-\pi^0$ Andrew Wagner We report an updated amplitude analysis of the charmless hadronic decays of neutral B mesons to $K^+\pi^-\pi^0$. With a sample of 454 million $\Upsilon(4S) \to B^0\overline{B^0}$ decays collected by the {\it B{\footnotesize A}B{\footnotesize AR}} detector at the PEP-II asymmetric-energy B~Factory at SLAC, we measure the magnitudes and phases of the intermediate resonant and nonresonant amplitudes for $B^0$ and $\overline{B^0}$ decays and determine the corresponding branching fractions and charge asymmetries. Combined with measurements of phases from $B$ decays to $K_s\pi^+\pi^-$ we constrain the CKM angle $\gamma$. [Preview Abstract] |
Monday, May 4, 2009 11:33AM - 11:45AM |
Q9.00003: Search for two-body $B$-meson decays with a $b_1$ meson and a $\rho$ or $K^*$ meson Angel Chavez We present results of a search for $B$-meson decays to a $b_1$ meson in combination with a vector meson $\rho\rightarrow\pi\pi$ or $K^*\rightarrow K\pi$. The analysis was performed on a data sample consisting of 465$\times10^{-6}$ $B\kern 0.18em\overline {\kern -0.18em B}$ pairs collected with the {\sl B{\scriptsize A} B{\scriptsize AR}} detector at the PEP-II asymmetric-energy $B$ Factory at SLAC. [Preview Abstract] |
Monday, May 4, 2009 11:45AM - 11:57AM |
Q9.00004: Recent Results in Rare Charmless Three-body Hadronic $B$-meson Decays Eugenia Puccio We report recent results from the {\sl B{\scriptsize A}B {\scriptsize AR}} experiment on the rare three-body charmless hadronic decays of charged and neutral $B$ mesons. These results have been obtained using the full {\sl B {\scriptsize A}B{\scriptsize AR}} dataset of around 470 million $B\bar{B}$ pairs. [Preview Abstract] |
Monday, May 4, 2009 11:57AM - 12:09PM |
Q9.00005: Study of the Decays $B^0 \to K^+K^-K^0_S$ and $B^+ \to K^+K^-K^+$ Brian Lindquist We study the decays $B^0 \to K^+K^-K^0_S$ and $B^+ \to K^+K^- K^+$ using a sample of 459 million $\Upsilon(4S) \to B\bar{B}$ events collected with the {\sl B{\scriptsize A}B{\scriptsize AR}} detector at the PEP-II $B$ Factory. We use a Dalitz plot analysis to measure the magnitudes and phases of intermediate resonant and nonresonant amplitudes, and to measure $CP$-violating parameters. [Preview Abstract] |
Monday, May 4, 2009 12:09PM - 12:21PM |
Q9.00006: Study of $B$-meson decays to an $\omega$ meson and a light vector meson Evan W. Thomas We present measurements of branching fractions, polarization, and $CP$-violation charge asymmetries for $B$-meson decays to two- body final states containing an $\omega$ meson and a low-mass $\pi\pi$ or $K\pi$ system. The analysis was performed on a data sample consisting of 465$\times10^{-6}$ $B\kern 0.18em\overline {\kern -0.18em B}$ pairs collected with the {\sl B{\scriptsize A} B{\scriptsize AR}} detector at the PEP-II asymmetric-energy $B$ Factory at SLAC. We obtain improved measurements for the previously observed decay $B\rightarrow\omega\rho^+$, and evidence or observation of new modes with $\omega$ and $K^*(892) $, $K^*_0(1430)$, and $K^*_2(1430)$. [Preview Abstract] |
Monday, May 4, 2009 12:21PM - 12:33PM |
Q9.00007: Measurement of of the Time-Dependent CP asymmetries in $B^0 \to K_S K_S K_S$ Simon Sitt We present a measurement of the time-dependent CP asymmetry in the channel $B^0 \to K_S K_S K_S$ using the full $\Upsilon(4S)$ dataset of the {\it B{\footnotesize A}B{\footnotesize AR}} experiment corresponding to 465 million $B\bar{B}$ pair events. This mode is of particular interest, as it is a theoretically clean penguin mode and potentially sensitive to new physics effects. We use an extended likelihood fit to determine the S and C parameters of the CP asymmetry simultaneously in the modes $B^0 \to K_S(\pi^+\pi^-) K_S(\pi^+\pi^-)K_S(\pi^+\pi^-) $ and $B^0 \to K_S(\pi^+\pi^-)K_S(\pi^+\pi^-)K_S(\pi^0\pi^0)$. [Preview Abstract] |
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