Publications [#307930] of Ashutosh V. Kotwal

Papers Published
  1. Aaltonen, T; González, BÁ; Amerio, S; Amidei, D; Anastassov, A; Annovi, A; Antos, J; Albrow, MG; Apollinari, G; Appel, JA; Apresyan, A; Arisawa, T; Artikov, A; Asaadi, J; Ashmanskas, W; Auerbach, B; Aurisano, A; Azfar, F; Badgett, W; Barbaro-Galtieri, A; Barnes, VE; Barnett, BA; Barria, P; Bartos, P; Bauce, M; Bauer, G; Bedeschi, F; Beecher, D; Behari, S; Bellettini, G; Bellinger, J; Benjamin, D; Beretvas, A; Bhatti, A; Binkley, M; Bisello, D; Bizjak, I; Bland, KR; Blocker, C; Blumenfeld, B et al., Diffractive W and Z production at the Fermilab Tevatron, Physical Review D - Particles, Fields, Gravitation, and Cosmology, vol. 82 no. 11 (2010) [doi] .

    Abstract:
    We report on a measurement of the fraction of events with a W or Z boson which are produced diffractively in p̄p collisions at √s=1.96TeV, using data from 0.6fb⊃-1 of integrated luminosity collected with the CDFII detector equipped with a Roman-pot spectrometer that detects the p̄ from p̄+p→p̄+[X+W/Z]. We find that (1.00±0.11)% of Ws and (0.88±0.22)% of Zs are produced diffractively in a region of antiproton or proton fractional momentum loss ξ of 0.03<ξ<0.10 and 4-momentum transferred squared t of -1<t<0(GeV/c)2, where we account for the events in which the proton scatters diffractively while the antiproton dissociates, p̄+p→[X+W/Z]+p, by doubling the measured proton dissociation fraction. We also report on searches for W and Z production in double Pomeron exchange, p+p̄→p+[X+W/Z]+p̄, and on exclusive Z production, p̄+p→p̄+Z+p. No signal is seen above background for these processes, and comparisons are made with expectations. © 2010 The American Physical Society.