R. Carosi
University of Pisa
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Featured researches published by R. Carosi.
Physics Letters B | 1985
T. Åkesson; M. Albrow; S. Almehed; E. Anassontzis; Richard Batley; O. Benary; H. Bøggild; O. Botner; H. Breuker; H. Brody; V. Burkert; B. Callen; R. Carosi; A. A. Carter; J. R. Carter; P. Cecil; V. Chernyatin; Y. Choi; W. Cleland; S. Dagan; E. Dahl-Jensen; I. Dahl-Jensen; P. Dam; G. Damgaard; B. Dolgoshein; S. Eidelman; W.M. Evans; C. Fabjan; P. Frandsen; S. Frankel
Abstract The production of inclusive prompt positrons in pp collisions at √ s = 63 GeV and θ cm = 90° has been measured over the p T interval 0.08 T GeV c . The e / π ratio rises from ∼ 2 × 10 −4 at p T = 0.9 GeV c to ∼ 1 × 10 −3 at p T = 0.1 GeV c . This is a factor of 6 higher than would be expected from the sum of hadronic bremsstrahlung and the semileptonic decay of charm.
Physical Review Letters | 2005
Darin Acosta; J. Adelman; T. Affolder; T. Akimoto; M. Albrow; D. Ambrose; S. Amerio; D. Amidei; A. Anastassov; K. Anikeev; A. Annovi; J. Antos; M. Aoki; G. Apollinari; T. Arisawa; J.-F. Arguin; A. Artikov; W. Ashmanskas; A. Attal; F. Azfar; P. Azzi-Bacchetta; N. Bacchetta; H. Bachacou; W. Badgett; A. Barbaro-Galtieri; G. J. Barker; V. E. Barnes; B. A. Barnett; S. Baroiant; G. Bauer
We present the first evidence of charmless decays of the B(0)(s) meson, the decay B(0)(s)--> phiphi, and a measurement of the branching ratio BR(B(0)(s)--> phiphi) using 180 pb(-1) of data collected by the CDF II experiment at the Fermilab Tevatron collider. In addition, the BR and direct CP asymmetry for the B+-->phiK+ decay are measured. We obtain BR(B(0)(s)--> phiphi)=[14(+6)(-5)(stat)+/-6(syst)] x 10(-6), BR(B+-->phiK+)=[7.6+/-1.3(stat)+/-0.6(syst)] x 10(-6), and A(CP)(B+-->phiK+)= -0.07+/-0.17(stat)+0.03 / -0.02(syst). Both decays are governed in the standard model by second order (penguin) b-->s(-)ss amplitudes.
