Lambda Sub B Results From Cdf PDF Download
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Release | : 2001 |
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Download Lambda Sub B Results from CDF. Book in PDF, ePub and Kindle
The CDF experiment has recorded 110 pb[sup[minus]1] of p[ovr p] collisions at[radical]s= 1.8 TeV during the 1992-1995 data taking period. Using this dataset, searches for inclusive and semileptonic[Lambda][sub b] decays were performed. The[Lambda][sub b] mass was measured to be M[sub[Lambda][sub b]][equals] 5623[plus-minus] 5(stat.)[plus-minus] 4(syst.) MeV/c[sup 2], using a sample of exclusively reconstructed[Lambda][sub b] candidate events in the[Lambda][sub b][r-arrow][Lambda]J/[psi] channel. The[Lambda][sub b] lifetime was measured to be[tau][sub[Lambda][sub b]][equals] 1. 32[plus-minus] 0.08(stat.)[plus-minus] 0.05(syst.) ps, using a sample of 197[plus-minus] 25 partially reconstructed semileptonic[Lambda][sub b][r-arrow] l[sup[minus]][Lambda][sub c][sup[plus]]X decays, with[Lambda][sub c][sup[plus]] reconstructed from its decay to the pK[sup[minus]][pi][sup[plus]] final state. Using the same decay channels, the product branching ratios were measured to be f(b[r-arrow][Lambda][sub b])B([Lambda][sub b][r-arrow][Lambda]J/[psi])= 4.2[plus-minus]1.8(stat.)[plus-minus]0.7(syst.)[times]10[sup[minus]5] and f(b[r-arrow][Lambda][sub b])B([Lambda][sub b][r-arrow] l[sup[minus]][Lambda][sub c][sup[plus]][ovr[nu]])B([Lambda][sub c][sup[plus]][r-arrow] pK[sup[minus]][pi][sup[plus]])[equals] 9.3[plus-minus]2.5(stat.)[plus-minus][sup[plus]4.6][sub[minus]4.0](syst.)[times]10[sup[minus]4], where f(b[r-arrow][Lambda][sub b]) is the fraction of b quarks forming b baryons, and l is either an electron or a muon. 15 refs., 4 figs., 1 tab.
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Release | : 2002 |
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Download Update of Run 1 B Results at CDF Book in PDF, ePub and Kindle
While the Collider Detector at Fermilab (CDF) is starting a new data run, it is also finishing analyses based on the 100 pb−1 ''Run 1'' data sample collected between 1992 and 1996. In particular, the [Lambda]{sub b} lifetime has been measured using the exclusive decay channel [Lambda]{sub b} → J/[psi][Lambda]°. The B+ cross section, based upon the decay B+ → J/[psi]K+, has been finalized, as well as the ratio of inclusive b quark cross sections at √s = 630 GeV and 1800 GeV. Early results from the new data run with the displaced-track trigger, which shows great promise for b physics at CDF, are presented.
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Release | : 2001 |
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Download CDF Run I B Physics Results Book in PDF, ePub and Kindle
The CDF Run I B physics program has been very successful, making numerous measurements over a wide variety of B physics topics. Measurements have included masses and lifetimes; discovery of the B[sub c]; B[sub s][r-arrow] J/[psi][phi] polarization; B[sup 0][leftrightarrow][bar B][sup 0] mixing; sin (2[beta]); and rare decay limits. Recent results include a search for[Lambda][sub b][r-arrow][Lambda][gamma] and a study of B[sup 0][r-arrow] J/[psi]K(*)[sup 0][pi][sup+][pi][sup[minus]] decays. The tools and experience developed during Run I are quite valuable as CDF enters Run II.
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Total Pages | : 836 |
Release | : 1994 |
Genre | : Aeronautics |
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Download Scientific and Technical Aerospace Reports Book in PDF, ePub and Kindle
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Release | : 2003 |
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Download Masses and Branching Fractions at CDF. Book in PDF, ePub and Kindle
The authors present a collection of new results on b-meson and[Lambda][sub b] masses and branching fractions measured at CDF. They have improved the measurement of the[Lambda][sub b] and B[sub s] mass and they have measured the branching fractions of B[sub s][yields] D[sub s][pi], [Lambda][sub b][yields][Lambda][sub c][pi] and B[sub u][yields][Phi]K[sup[+-]].
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Total Pages | : 610 |
Release | : 1995 |
Genre | : Aeronautics |
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Download Scientific and Technical Aerospace Reports Book in PDF, ePub and Kindle
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
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Total Pages | : 480 |
Release | : 1995 |
Genre | : Science |
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Download Government Reports Announcements & Index Book in PDF, ePub and Kindle
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Release | : 2003 |
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Download B, Lambda[sub B] and Charm Results from the Tevatron Book in PDF, ePub and Kindle
Recent results on B[sub d], B[sub u][sup[+-]], B[sub s], [Lambda][sub b] and Charm hadrons are reported from[approx] 75 pb[sup -1] and[approx] 40 pb[sup -1] of data accumulated at the upgraded CDF and D0 experiments at the Fermilab Tevatron[bar p]-p collider, during Run-II. These include lifetime and mass measurements of B and Charm hadrons, searches for rare decays in charm and B hadrons and CP-violation in Charm decays. Results relevant to CP-violation in B-decays are also reported.
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Total Pages | : 62 |
Release | : 1925 |
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ISBN | : 9788073884543 |
Download Fascicolo speciale ... Book in PDF, ePub and Kindle
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Total Pages | : 660 |
Release | : 1994 |
Genre | : Particles (Nuclear physics) |
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Download High Energy Physics Index Book in PDF, ePub and Kindle