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Studies Of Qcd B Physics And Jet Handedness At Sld
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Book Synopsis Studies of QCD B-physics and Jet Handedness at SLD. by :
Download or read book Studies of QCD B-physics and Jet Handedness at SLD. written by and published by . This book was released on 1993 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present tests of the flavor independence of strong interactions via preliminary measurements of the ratios [alpha]{sub s}/{sub alpha}{sub s}(udsc) and [alpha]{sub s}(uds)/[alpha]{sub s}(bc) using data collected by the SLD experiment at SLAC during the 1992 SLD/SLC run. In addition, we have measured the difference in charged particle multiplicity between Z° → b{bar b} and Z° → u{bar u}, d{bar d}, s{bar s} events, and find that it supports the prediction of perturbative QCD that the multiplicity difference be independent of center-of-mass energy. We have also made a preliminary study of jet polarization and find, using a charge-signed definition, a small net handedness in our sample of hadronic jets.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1995 with total page 782 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis QCD and High Energy Hadronic Interactions by :
Download or read book QCD and High Energy Hadronic Interactions written by and published by . This book was released on 1993 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis QCD and High Energy Hadronic Interactions by : J. Thanh Van Tran
Download or read book QCD and High Energy Hadronic Interactions written by J. Thanh Van Tran and published by . This book was released on 1993 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recent Tests of QCD at SLD. written by and published by . This book was released on 2001 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present selected results on strong interaction physics from the SLD experiment at the SLAC Linear Collider. We report on several new studies of 3- and 4-jet hadronic Z° decays, in which jets are identified as quark, antiquark or gluon. The gluon energy spectrum is measured over the full kinematic range, providing an improved test of QCD and limits on anomalous bbg and bbg couplings. The parity violation in Z° 2!b{bar b}g decays is consistent with electroweak theory plus QCD. New tests of T- and CP-conservation at the bbg vertex are performed. An improved measurement of the rate of gluon splitting into b{bar b} pairs yields g{sub b{bar b}} = 0.00244 ± 0.00059(stat.) ± 0.00034(syst.). We also present a number of new results on jet fragmentation into identified hadrons. The B hadron energy spectrum is measured over the full kinematic range using a new, inclusive technique, allowing stringent tests of predictions for its shape and a precise measurement of x{sub B} = 0.710 ± 0.003(stat.) ± 0.006(syst.) (Preliminary). A detailed study of correlations in rapidity y between pairs of identified [pi]{sup {+-}}, K{sup {+-}} and p/{bar p} confirms that strangeness and baryon number are conserved locally, and shows local charge conservation between meson-baryon and strange-nonstrange pairs. Flavor-dependent long-range correlations are observed for all combinations of these hadron species, yielding new information on leading particle production. The first study of correlations using rapidities signed such that y 0 corresponds to the quark direction provides additional new insights into fragmentation, including the first direct observation of baryon number ordering along the q{bar q} axis.
Book Synopsis Public Lectures by : Jerome Isaac Friedman
Download or read book Public Lectures written by Jerome Isaac Friedman and published by Office of Unive. This book was released on 1997 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis QCD Tests with SLD and Polarized Beams by :
Download or read book QCD Tests with SLD and Polarized Beams written by and published by . This book was released on 2003 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present a measurement of the strong coupling a{sub s} derived from multijet rates using data collected by the SLD experiment at SLAC and find that a{sub s}(M{sub Z}2) = 0.118 " 0.002(stat.) " 0.003(syst.) " 0.010(theory). The authors present tests of the flavor independence of strong interactions via preliminary measurements of the ratios a{sub s}(b)/a{sub s}(udse) and a{sub s}(uds)/a{sub s}(bc). In addition, the authors have measured the difference in charged particle multiplicity between Z° --> b{bar b} and Z° --> u{bar u}, d{bar d}, s{bar s} events, and find that it supports the prediction of perturbative QCD that the multiplicity difference be independent of center-of-mass energy. Finally, they have made a preliminary study of jet polarization using the jet handedness technique.
Download or read book High Energy Physics Index written by and published by . This book was released on 1994 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book QCD 94 written by S. Narison and published by . This book was released on 1995 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book QCD. written by and published by . This book was released on 1996 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis QCD Studies at SLD: Identified Hadron Production in Jets of Different Flavors by :
Download or read book QCD Studies at SLD: Identified Hadron Production in Jets of Different Flavors written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors have measured the differential cross sections for the production of[pi][sup[+-]], K[sup[+-]], K[sup 0], K[sup*](892), [phi](1020), p and[Lambda] in hadronic Z[sup 0] decays and in subsets of flavor-tagged Z[sup 0][yields] light-flavor (u[bar u], d[bar d], or s[bar s]), Z[sup 0][yields] c[bar c] and Z[sup 0][yields] b[bar b] events. Charged hadrons were identified with the SLD Cherenkov Ring Imaging Detector. A vertex detector was employed to select flavor-enriched samples, and the polarized electron beam from SLC was used to tag quark and antiquark jets. The authors observes a flavor dependence in the hadron fragmentation functions. They also present evidence for leading particle production in hadronic decays of the Z[sup 0] boson to light-flavor jets and a direct measurement of the strangeness suppression factor[gamma][sub s].
Download or read book Recent QCD Results from SLD. written by and published by . This book was released on 1999 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present selected results on strong interaction physics from the SLD experiment at the SLAC Linear Collider. We report on several new studies of 3- and 4-jet hadronic Z° decays, in which jets are identified as quark, antiquark or gluon. The 3-jet Z° --> b anti-bg rate is sensitive to the b-quark mass; prospects for measuring m{sub b} are discussed. The gluon energy spectrum is measured over the full kinematic range, providing an improved test of QCD and limits on anomalous b anti-bg couplings. The parity violation in Z° --> b anti-bg decays is consistent with electroweak theory plus QCD. New tests of T- and CP-conservation at the bbg vertex are performed. A new measurement of the rate of gluon splitting into b anti-b pairs yields g{sub b anti-b} = 0.0031 " 0.0007 (stat.)" 0.0006 (syst.) (Preliminary). We also present a number of new results on jet fragmentation into identified hadrons. The B hadron energy spectrum is measured over the full kinematic range using a new, inclusive technique, allowing stringent tests of predictions for its shape and a precise measurement of (xB) = 0.714 " 0.005(stat.) " 0.007(syst.) (Preliminary). A detailed study of correlations in rapidity y between pairs of identified pi{sup {+-}}, K{sup {+-}} and p/anti-p confirms that strangeness and baryon number are conserved locally, and shows local charge conservation between meson-baryon and strange-nonstrange pairs. Flavor-dependent long-range correlations are observed for all combinations of these hadron species, yielding new information on leading particle production. The first study of correlations using rapidities signed such that y> 0 corresponds to the quark direction provides additional new insights into fragmentation, including the first direct observation of baryon number ordering along the q anti-q axis.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book QCD 96 written by S. Narison and published by . This book was released on 1997 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Gauge/String Duality, Hot QCD and Heavy Ion Collisions by : Jorge Casalderrey-Solana
Download or read book Gauge/String Duality, Hot QCD and Heavy Ion Collisions written by Jorge Casalderrey-Solana and published by Cambridge University Press. This book was released on 2023-07-31 with total page 469 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book QCD Tests with Polarized Beams written by and published by . This book was released on 1996 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present three QCD studies performed by the SLD experiment at SLAC, utilizing the highly polarized SLC electron beam. They examined particle production differences in light quark and antiquark hemispheres, and observed more high momentum baryons and K−'s than antibaryons and K's in quark hemispheres, consistent with the leading particle hypothesis. They performed a search for jet handedness in light q- and {anti q}-jets. Assuming Standard Model values of quark polarization in Z° decays, they have set an improved upper limit on the analyzing power of the handedness method. They studied the correlation between the Z° spin and the event-plane orientation in polarized Z° decays into three jets.
Book Synopsis Government reports annual index by :
Download or read book Government reports annual index written by and published by . This book was released on 199? with total page 1686 pages. Available in PDF, EPUB and Kindle. Book excerpt:
