Publications [#308080] of Ashutosh V. Kotwal

Papers Published
  1. Abulencia, A; Adelman, J; Affolder, T; Akimoto, T; Albrow, MG; Ambrose, D; Amerio, S; Amidei, D; Anastassov, A; Anikeev, K; Annovi, A; Antos, J; Aoki, M; Apollinari, G; Arguin, J-F; Arisawa, T; Artikov, A; Ashmanskas, W; Attal, A; Azfar, F; Azzi-Bacchetta, P; Azzurri, P; Bacchetta, N; Badgett, W; Barbaro-Galtieri, A; Barnes, VE; Barnett, BA; Baroiant, S; Bartsch, V; Bauer, G; Bedeschi, F; Behari, S; Belforte, S; Bellettini, G; Bellinger, J; Belloni, A; Benjamin, D; Beretvas, A; Beringer, J et al., Measurement of σΛb0/ σB̄0×B(Λb0→Λc+π-)/B(B̄0→D+π- ) in pp̄ Collisions at s=1.96TeV, Physical Review Letters, vol. 98 no. 12 (2007) [doi] .

    Abstract:
    We present the first observation of the baryon decay Λb0→ Λc+π- followed by Λc+→pK-π+ in 106pb-1 pp̄ collisions at s=1.96TeV in the CDF experiment. In order to reduce systematic error, the measured rate for Λb0 decay is normalized to the kinematically similar meson decay B̄0→D+π- followed by D+→π+K-π+. We report the ratio of production cross sections (σ) times the ratio of branching fractions (B) for the momentum region integrated above pT>6GeV/c and pseudorapidity range |η|<1.3: σ(pp̄→Λb0X)/ σ(pp̄→B̄0X)×B(Λb0→Λc+π-)/ B(B̄0→D+π-)=0.82±0.08(stat)±0.11(syst)±0. 22[B(Λc+→pK-π+)]. © 2007 The American Physical Society.