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Search for resonant B<sup>+</sup>/-->K<sup>+</sup>/-h->K<sup>+</sup>/-γγ decays at Belle
Belle Collaboration,Wicht, J.,Adachi, I.,Aihara, H.,Anipko, D.,Aulchenko, V.,Aushev, T.,Bakich, A.M.,Barberio, E.,Bedny, I.,Bitenc, U.,Bizjak, I.,Bondar, A.,Bozek, A.,Bracko, M.,Brodzicka, J.,Browder, North-Holland Pub. Co 2008 Physics letters: B Vol.662 No.4
We report measurements and searches for resonant B<SUP>+</SUP>/-->K<SUP>+</SUP>/-h->K<SUP>+</SUP>/-γγ decays where h is a η, η<SUP>'</SUP>, η<SUB>c</SUB>, η<SUB>c</SUB>(2S), χ<SUB>c0</SUB>, χ<SUB>c2</SUB>, J/ψ meson or the X(3872) particle. The results are based on a data sample containing 535 million BB@? pairs collected with the Belle detector at the KEKB e<SUP>+</SUP>e<SUP>-</SUP> asymmetric-energy collider operating at the @?(4S) resonance. Signals are observed in the modes with η and η<SUP>'</SUP>, and we obtain evidence for a signal in the mode with η<SUB>c</SUB>. We measure B(B<SUP>+</SUP>/-->K<SUP>+</SUP>/-η->K<SUP>+</SUP>/-γγ)=(0.87<SUB>-0.15</SUB><SUP>+0.16</SUP>(stat)<SUB>-0.07</SUB><SUP>+0.10</SUP>(syst))x10<SUP>-6</SUP>, B(B<SUP>+</SUP>/-->K<SUP>+</SUP>/-η<SUP>'</SUP>->K<SUP>+</SUP>/-γγ)=(1.40<SUB>-0.15</SUB><SUP>+0.16</SUP>(stat)<SUB>-0.12</SUB><SUP>+0.15</SUP>(syst))x10<SUP>-6</SUP> and B(B<SUP>+</SUP>/-->K<SUP>+</SUP>/-η<SUB>c</SUB>->K<SUP>+</SUP>/-γγ)=(0.22<SUB>-0.07</SUB><SUP>+0.09</SUP>(stat)<SUB>-0.02</SUB><SUP>+0.04</SUP>(syst))x10<SUP>-6</SUP>. We set upper limits on the branching fractions of the other modes.
ASTROD I, Test of Relativity, Solar-System Measurement and G-Wave Detection
Wei-Tou Ni,Albrecht Rudiger,Etienne Samain,Stephan Schiller,Diana Shaul,Sachie Shiomi,Timothy Sumner,Chien-Jen Tang,Jinhe Tao,Pierre Touboul,Haitao Wang,Andreas Wicht,Ji Wu,Xue-Jun Wu,Yaoheng Xiong,Ch 한국물리학회 2004 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.45 No.1
ASTROD-I is a mission concept under study to realize the general concept of ASTROD (Astrodynamical Space Test of Relativity using Optical Devices). This mission concept has one spacecraft carrying a payload of a telescope, ve lasers, and a clock together with ground stations (ODSN: Optical Deep Space Network) to test the optical scheme of interferometric and pulse ranging and yet give important scientic results. The scientic goals include a better measurement of the relativistic parameters, a better sensitivity in using optical Doppler tracking method for detecting gravitational waves, and measurement of many solar system parameters more precisely. The weight of this spacecraft is estimated to be about 300-350 kg with a payload of about 100-120 kg. The spacecraft is to be launched with initial period about 290 days and to pass by Venus twice to receive gravity-assistance for achieving shorter periods. With good orbit design, after about 370 days from launch, the spacecraft will arrive at the other side of the Sun for the determination of relativistic parameters.