Observation and Polarization Measurements of $B^\pm \to \phi K_{1}^\pm$ and $B^\pm \to \phi K_{2}^{*\pm}$ - INSPIRE

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Observation and Polarization Measurements of $B^\pm \to \phi K_{1}^\pm$ and $B^\pm \to \phi K_{2}^{*\pm}$

BaBar

Collaboration

Jun, 2008

7 pages

Published in:

Phys.Rev.Lett. 101 (2008) 161801

e-Print:

0806.4419 [hep-ex]

DOI:

10.1103/PhysRevLett.101.161801

PDG:

{{\mathit B}^{+}}

\rightarrow

{{\mathit \phi}}{{\mathit K}_{{{1}}}{(1400)}^{+}}

Report number:

SLAC-PUB-13267,
BABAR-PUB-08-021

Experiments:

SLAC-PEP2-BABAR

View in:

reference search47 citations

Citations per year

Abstract: (arXiv)

With the full \babar data sample of 465 million BaBar pairs, we observe the decays B+- ->phi(1020) K_1(1270)+- and B+- ->phi(1020) K_2*(1430) +-. We measure the branching fractions (6.1+-1.6+-1.1)\times 10^{-6} and (8.4+- 1.9+- 0.9)\times 10^{-6} and the fractions of longitudinal polarization 0.46(+0.12-0.13)(+0.03-0.07) and 0.80(+0.09-0.10)+-0.03, respectively. We also report on the B+- ->phi K_0*(1430)+- decay branching fraction of (7.0+-1.3+-0.9)\times10^{-6} and several parameters sensitive to CP violation and interference in the above three decays. Upper limits are placed on the B+- decay rates to final states with phi and K_1(1400)+-, K*(1410)+-, K_2(1770)+-,or K_2(1820)+-. Understanding the observed polarization pattern requires amplitude contributions from an uncertain source.

Note:

7 pages, 10 postscript figures, submitted to PRL

11.30.Er
13.25.Hw
13.88.+e
electron positron: annihilation
B: pair production
B: hadronic decay
decay: amplitude analysis
K1(1270)
K*2(1430)
K*0(1430)

References(25)

Figures(10)

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BaBar

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