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The infrared counterpart of the Z source GX 5–1

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 315:4 (2000) l57-l60

Authors:

PG Jonker, RP Fender, NC Hambly, M Van Der Klis
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Measurement of charge asymmetries in charmless hadronic B meson decays.

Physical review letters 85:3 (2000) 525-529

Authors:

S Chen, J Fast, JW Hinson, J Lee, N Menon, DH Miller, EI Shibata, IP Shipsey, V Pavlunin, D Cronin-Hennessey, Y Kwon, AL Lyon, EH Thorndike, CP Jessop, H Marsiske, ML Perl, V Savinov, D Ugolini, X Zhou, TE Coan, V Fadeyev, Y Maravin, I Narsky, R Stroynowski, J Ye, T Wlodek, M Artuso, R Ayaad, C Boulahouache, K Bukin, E Dambasuren, S Karamnov, S Kopp, G Majumder, GC Moneti, R Mountain, S Schuh, T Skwarnicki, S Stone, G Viehauser, JC Wang, A Wolf, J Wu, SE Csorna, I Danko, KW McLean, S Márka, Z Xu, R Godang, A Shapiro

Abstract:

We search for CP-violating charge asymmetries (alpha(CP)) in the B meson decays to K(+/-)pi(-/+), K(+/-)pi(0), K(0)(S)pi(+/-), K(+/-)eta('), and omega pi(+/-). Using 9.66 million upsilon(4S) decays collected with the CLEO detector, the statistical precision on alpha(CP) is in the range of +/-0.12 to +/-0.25 depending on decay mode. While CP-violating asymmetries of up to +/-0.5 are possible within the standard model, the measured asymmetries are consistent with zero in all five decay modes studied.
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Two-body B meson decays to eta and eta('): observation of B --> eta K*.

Physical review letters 85:3 (2000) 520-524

Authors:

SJ Richichi, H Severini, P Skubic, A Undrus, S Chen, J Fast, JW Hinson, J Lee, N Menon, DH Miller, EI Shibata, IP Shipsey, V Pavlunin, D Cronin-Hennessey, Y Kwon, AL Lyon, EH Thorndike, CP Jessop, H Marsiske, ML Perl, V Savinov, D Ugolini, X Zhou, TE Coan, V Fadeyev, Y Maravin, I Narsky, R Stroynowski, J Ye, T Wlodek, M Artuso, R Ayad, C Boulahouache, K Bukin, E Dambasuren, S Karamnov, S Kopp, G Majumder, GC Moneti, R Mountain, S Schuh, T Skwarnicki, S Stone, G Viehauser, JC Wang, A Wolf, J Wu, SE Csorna, I Danko, GJ Zhou

Abstract:

In a sample of 19 x 10(6) produced B mesons, we have observed the decays B-->eta K(*) and improved our previous measurements of B-->eta'K. The branching fractions we measure for these decay modes are B(B+-->eta K(*+)) = (26.4(+9.6)(-8.2)+/-3.3)x10(-6), B(B(0)-->eta K(*0)) = (13.8(+5.5)(-4.6)+/-1.6)x10(-6), B(B(+)-->eta'K(+) = (80(+10)(-9)+/-7)x10(-6), and B(B(0)-->eta'K0) = (89(+18)(-16)+/-9)x10(-6). We have searched with comparable sensitivity for related decays and report upper limits for these branching fractions.
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Hadronic structure in the decay τ-→π-π0ντ

Physical Review D - Particles, Fields, Gravitation and Cosmology 61:11 (2000) 1-19

Authors:

S Anderson, VV Frolov, Y Kubota, SJ Lee, R Mahapatra, JJ O'Neill, R Poling, T Riehle, A Smith, S Ahmed, MS Alam, SB Athar, L Jian, L Ling, AH Mahmood, M Saleem, S Timm, F Wappler, A Anastassov, JE Duboscq, KK Gan, C Gwon, T Hart, K Honscheid, H Kagan, R Kass, J Lorenc, H Schwarthoff, E Von Toerne, MM Zoeller, SJ Richichi, H Severini, P Skubic, A Undrus, M Bishai, S Chen, J Fast, JW Hinson, J Lee, N Menon, DH Miller, EI Shibata, IPJ Shipsey, Y Kwon, AL Lyon, EH Thorndike, CP Jessop, H Marsiske, ML Perl, V Savinov, D Ugolini, X Zhou, TE Coan, V Fadeyev, I Korolkov, Y Maravin, I Narsky, R Stroynowski, J Ye, T Wlodek, M Artuso, R Ayad, E Dambasuren, S Kopp, G Majumder, GC Moneti, R Mountain, S Schuh, T Skwarnicki, S Stone, A Titov, G Viehhauser, JC Wang, A Wolf, J Wu, SE Csorna, KW McLean, S Marka, Z Xu, R Godang, K Kinoshita, IC Lai, S Schrenk, G Bonvicini, D Cinabro, R Greene, LP Perera, GJ Zhou, S Chan, G Eigen, E Lipeles, M Schmidtler, A Shapiro, WM Sun, J Urheim, AJ Weinstein, F Würthwein, DE Jaffe, G Masek, HP Paar

Abstract:

We report on a study of the invariant mass spectrum of the hadronic system in the decay τ-→π-π0ντ. This study was performed with data obtained with the CLEO II detector operating at the CESR e+e- collider. We present fits to phenomenological models in which resonance parameters associated with the ρ(770) and ρ(1450) mesons are determined. The π-π0 spectral function inferred from the invariant mass spectrum is compared with data on e+e-π+π- as a test of the conserved vector current theorem. We also discuss the implications of our data with regard to estimates of the hadronic contribution to the muon anomalous magnetic moment. ©2000 The American Physical Society.
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ASTRONOMY: A New Source of Gamma Rays.

Science (New York, N.Y.) 288:5475 (2000) 2326

Abstract:

Relativistic outflows or "jets" are collimated streams of high-energy electrons that emit synchrotron radiation at radio wavelengths and have bulk velocities that are a substantial fraction of the speed of light. They trace the outflow of enormous amounts of energy and matter from a central supermassive black hole in distant radio galaxies. As Fender explains in this Perspective, much smaller, more local sources may also produce such jets. Data presented by Paredes et al. point toward association of one such source, a relatively faint x-ray binary, with a gamma-ray source. This and similar pairs may contribute substantially to the production of high-energy particles and photons within our galaxy.
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