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Topic: Branching ratios

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Decay constant

	Patent 5098459: Method of manufacturing optical branching and coupling device
		Optical branching and coupling devices may be classified by their components and functions into three groups: optical component utilization type, optical fiber utilization type and optical waveguide type.
		Further, the form and the ratio of the axes need not be limited to those in the present embodiment, and may be chosen appropriately as long as it enables the monitoring of the presence of a torsional condition in the core.
		If the ratio l/m is not greater than 40%, the fiber is retaken into its original shape due to surface tension even when it is squeezed into a predetermined shape using a die, while if it exceeds 90%, it becomes difficult to monitor the presence of a torsional condition in the core.
	www.freepatentsonline.com /5098459.html (2835 words)

	Analysis Sensitivity of the Branching Ratio
		In the quoted branching ratio, we have taken an average of the two data sets, AHC cut (3,3) and AHC cut (4,6), weighted by their respective pion stops of 45% and 55%.
		The resulting branching ratios are found to be well within the combined statistical and systematic errors of the measurement.
		In Table 6.8 the tests of the sensitivity of the extracted branching ratio to the opening angle cuts are shown.
	www.pa.uky.edu /~sugata/phd/node60.html (419 words)

	Photoionization of CO2 (ARPES) region between 650 Å and 840 Å
		Vibrational branching ratios and asymmetry parameters in the photoionization of CO in the region between 650 Å and 840 Å
		The vibrational branching ratios and asymmetry parameters for CO have been determined in the wavelength region of 650 Å to near the ionization onset at about 840 Å.
		While the electron spectrometer resolution was not sufficient to resolve the spin orbit and Renner-Teller splitting in the photoelectron spectra, we are able to fit the data with a model that identifies the major structure in terms of the symmetric stretch and elements of the asymmetric stretch and bending modes.
	physics.nist.gov /PhysRefData/CO2/Html/contents.html (252 words)

	Decay modes and branching ratios
		candidates, corresponding to a statistical precision of 0.8%on the ratio of branching ratios.
		Using the cross sections measured at Novosibirsk and DCI, Gilman predicts [66] the branching ratio to be
		However, the branching ratio is related to that for the decay
	www.lns.cornell.edu /public/CLEO/CLEO3/cleo3/proposal/subsubsection3_3_3_2.html (1643 words)

	CONS310 Branching Ratios and Particle Decay Modes
		GSDK stores the branching ratios and partial decay modes for two and three body particle decays into the data structure
		If branching ratios and modes have been stored by GSDK, then GDECAY generates the decay products in the 2- or 3-body phase space.
		If no branching ratios have been defined by GSDK, the user routine GUDCAY is called, where the user can code special decay modes and branching ratios.
	www.dnp.fmph.uniba.sk /cernlib/asdoc/geant_html3/node73.html (180 words)

	Final-State Branching Ratios and Angular Fragment Distributions for Dissociative Recombination
		When signals from a larger number of final channels were superimposed, it became rather involved to extract the branching ratios and anisotropy parameters of the different channels from a fitting procedure.
		A first test of the three-dimensional detector was performed in an experiment on HD ions with the aim to follow systematically the dependence of the branching ratios on the incident electron energy.
		electron energy E, the branching ratios to the different final states are obtained from the relative contributions to the kinetic energy (or d) distribution of the different channels.
	www.mpi-hd.mpg.de /ato/jb96_html/node12.html (658 words)

	IngentaConnect Branching ratios in dissociative recombination of the C2H2+ molec... (Site not responding. Last check: 2007-11-06)
		IngentaConnect Branching ratios in dissociative recombination of the C2H2+ molec...
		Branching ratios in dissociative recombination of the C
		The branching to CH+CH was measured to be 0.13?0.01, whereas two other energetically allowed channels were found to be almost negligible.
	api.ingentaconnect.com /content/iop/jphysb/1999/00000032/00000014/art00309 (184 words)

	Abstract for "Measurement of Branching Ratios for K+/- -> pi+/- mu+ mu- from HyperCP at Fermilab." (Site not responding. Last check: 2007-11-06)
		Abstract for "Measurement of Branching Ratios for K+/- -> pi+/- mu+ mu- from HyperCP at Fermilab."
		In two runs at Fermilab the experiment collected the largest sample of hyperon decays in the world as well as a large sample of charged-kaon decays.
		Based on analysis of the 1997 data, I will present a preliminary result on the branching ratios of the K
	www.fcp01.vanderbilt.edu /schedules/abstracts/park_abs.html (90 words)

	Astron. Astrophys. 350, 327-333 (1999) (Site not responding. Last check: 2007-11-06)
		where A and B are branching ratios between the stationary and transitory solutions, determined by probability arguments and normalization.
		The branching ratio A for frequency coherence is therefore
		The second branching ratio B represents the fraction of the scattering processes that are subject to elastic collisions that destroy the frequency coherence but not the atomic polarization (the
	aa.springer.de /papers/9350001/2300327/sc10.htm (175 words)

	[No title]
		Branching ratios of the decays D0 -> K0bar K0 and D0 -> Ks0 Ks0 Ks0
		The branching ratios of D0 --> K0 K0 and D0 --> Ks0 Ks0 Ks0 relative to D0 --> K0 pi+ pi- are reported.
		The data were accumulated in the 1990-1991 fixed target running period of the Fermilab high energy photoproduction experiment E687.
	www.hep.uiuc.edu /e687/papers/allks.html (114 words)

	GEANT -- H2GEANTCONS310
		GSDK stores the branching ratios and partial decay modes for two and three body particle decays into the data structure JPART.
		If the decay modes and branching ratios hav been stored by GSDK, then GDECAY generates the decay products in the 2 or 3 body phase space.
		For any other particle the user routine GUDCAY is called, where the user is free to code special decay modes and branching ratios.
	www.dnp.fmph.uniba.sk /cernlib/asdoc/geantold/H2GEANTCONS310.html (170 words)

	researchdic
		Third, the vibrational branching for the F + HD reaction elucidates another facet of resonance effects in the integral cross sections.
		Except for the previously noted discrepancy in the H/D isotope branching ratio, good agreement with QCT (quasiclassical trajectory) results on a high quality ab initio surface are found for all dynamical features, including the product angular and traslational energy distributions and the very detailed angle-specific translational energy release.
		The intramolecular isotope branching ratio, for the reaction A + HD, exhibits a strong dependency on collision energies.
	kliu.iams.sinica.edu.tw /researchdic.htm (3894 words)

	C27. Computational Study of the HCCO + NO Reaction: Ab Initio MO/vRRKM Calculation of the Total Rate Constant and ...
		The product branching ratio is another important aspect of the HCCO + NO reaction critical for kinetic modeling.
		though quantitative estimations of the branching ratios are not always consistent.
		We utilized a variational RRKM approach to calculate total and branching rate constants for this multichannel and multi-quantum well system; the predicted values agree reasonably with experimental results.
	www.cstl.nist.gov /div838/kinetics2001/agenda/c_session/c27/c27.htm (336 words)

	B3. Determination of the Branching Ratios in the Radical-Radical Reaction: CN( 2S + ) + OH(2P )
		Determination of the Branching Ratios in the Radical-Radical Reaction: CN(
		There has been no previous direct measurement of the thermal rate constant or a determination of the product branching ratios.
		Although most of the chemistry occurring in this system is dominated by a few reactions, the secondary chemistry does become complicated, and detailed modeling of the compete reaction system is necessary to derive measurements of the branching ratios.
	www.cstl.nist.gov /div838/kinetics2001/agenda/b_session/b3/b3.htm (336 words)

	The smallest nonzero branching ratio ever measured (Site not responding. Last check: 2007-11-06)
		Calculating and then also measuring the relative likelihoods (branching ratios) of the different forms of particle mortality are important diagnostics for understanding how matter behaves at the most fundamental level.
		The expected background for this process, for their amount of data, would be 0.08 events.
		The researchers are therefore confident that they have measured a true K decay branching ratio, with a value of 4.2 x 10^-10 (with an uncertainty of +9.7 or -3.5 x 10^-10).
	www.phys.uni.torun.pl /~jkob/physnews97/node62.html (104 words)

	Chlorine atom spin-orbit branching ratios and total absolute reaction cross sections for the H + DCl ? HD + Cl reaction (Site not responding. Last check: 2007-11-06)
		Chlorine atom spin-orbit branching ratios and total absolute reaction cross sections for the H + DCl ?
		Chlorine atom spin-orbit branching ratios and total absolute reaction cross sections for the H + DCl -> HD + Cl reaction
		branching ratios and total absolute reaction cross sections have been measured for the H + DCl -> HD + Cl gas-phase reaction for
	www.iwr.uni-heidelberg.de /sfb359/ATA/Abstract2001-02.html (131 words)

	Tabulated baryon and meson masses, widths, branching ratios and encodings. (Site not responding. Last check: 2007-11-06)
		Tabulated baryon and meson masses, widths, branching ratios and encodings.
		The meson and baryon resonances decay branching ratios are taken from [
		Table 2.7: Branching ratios for non-strange baryon resonances.
	geant4.cern.ch /asd/geant4/reports/papers/HadronicPhysicsBook/node7.html (146 words)

	In ALEPH.GENERAL "About D* branching ratios" (Site not responding. Last check: 2007-11-06)
		Persis Drell sent me this message concerning D* branching ratios: I would like to alert you to an important error in the 1994 Particle Data Book which may impact your analysis.
		However, PDG appear to have taken our results on the D* branching fractions and added the constraint that the branching fractions must sum to 1 to get values for the individual branching fractions with smaller errors than are quoted in our paper.
		This is all very clever except that we already applied this constraint in our paper on the D* branching fractions so their proceedure effectively applies this constraint twice and artificially lowers the errors!
	alephwww.cern.ch /alnews_archive/general/news002435.html (205 words)

	Branching Ratios (Site not responding. Last check: 2007-11-06)
		The branching ratios of each of the above particles (except, of course, the LSP) are listed below the mass parameters.
		What we need is the branching ratio, not the width.
		We can see that the top decays a third of the time into leptons and a b quark, and two thirds of the time into just quarks.
	www-hep.colorado.edu /~nlc/ISASUSY_proulx/isasusy_doc/node5.html (270 words)

	Measurement of Lambda_b ratio of branching ratios (Site not responding. Last check: 2007-11-06)
		This is the WEB page summarizing the blessed results for the measurement of Lambda_b ratio of branching ratios.
		Those have been produced for the summer conferences 2003 and have been blessed in the B Physcis Meeting on Wednesday July 02, 2003.
		Following three figures are blessed as PR plots,not necessary to be part of branching ration analysis.
	www-cdf.fnal.gov /physics/new/bottom/030702.blessed-lblcpi-ratio (130 words)

	Dr. Luke Goembel's Curriculum Vita
		Ph.D. Candidate, The Johns Hopkins University, developed a high resolution coincident electron impact spectrometer for the laboratory measurement of branching ratios (electron impact ionization-excitation of N2).
		Determined the electron impact ionization-excitation branching ratios of N2.
		Goembel, L., J. Doering, D. Morrison, and L. Paxton, Thermospheric O/N2 ratios from photoelectron spectra, J. Geophys Res., 102, A4, 7411-7419, 1997.
	www.toad.net /~lukegoembel/lukesvita.html (1062 words)

	QCD Corrections to Rare K- and B-Decays for Arbitrary Top Quark Mass -- from Mathematica Information Center
		We find that the uncertainty in the branching ratios, due to the dependence of mt on the choice of the renormalization scale µ is reduced from O(25%) to O(3%) by including the O(alphas) corrections.
		For the choice µ-Mw they can be as large as 20% for both types of decays.
		We also point out that the published branching ratios for B->ll miss an over-all factor of 2.
	library.wolfram.com /infocenter/Articles/3244 (153 words)

	APS - 2005 APS April Meeting PostDeadline - Event - Ratios of Branching Ratios for Hadronic $b$ Hadron Decays
		Abstract: Z8.00004 : Ratios of Branching Ratios for Hadronic $b$ Hadron Decays
		The addition of the displaced track trigger at the second trigger level has enabled CDF in Run II to study purely hadronic $b$ hadron decays.
		We present ratio of branching ratios for $B^+\to\overline{D}^0 \pi^+$, $B^0\to D^-\pi^+(\pi^+\pi^-)$, $B_s\to D_s^-\pi^+(\pi^+\pi^-)$ and $\Lambda_b\to \Lambda_c^-\pi^+$ and first observations of doubly charmed $B$ decays at Hadron Colliders.
	meetings.aps.org /Meeting/APR05/Event/29687 (95 words)

	Spectral Simulation
		The peak at about 1.2 keV in the data is not reproduced by the simulator - it is likely due to a complex of Ge L lines intrinsic to the spectrum produced by the DCM source and not due to redistribution in the CCD.
		Table 7.1.5.1 compares the branching ratios of the data to the simulated event list.
		Table 7.1: A comparison of real and simulated grade distributions (branching ratios) for the I3 chip at 4.5 keV.
	www.astro.psu.edu /xray/docs/cal_report/node250.html (200 words)

	Branching Ratios and Decay Channels
		G4Decay selects a decay mode for the particle according to branching ratios defined in the G4DecayTable class, which is a member of the G4ParticleDefinition class.
		Each mode is implemented as a class derived from G4VDecayChannel and is responsible for generating the secondaries and the kinematics of the decay.
		is the ratio of the two form factors
	wwwinfo.cern.ch /asd/geant4/G4UsersDocuments/UsersGuides/PhysicsReferenceManual/html/node14.html (487 words)

	DPF99 - New DELPHI Results from Semileptonic b, c Decays (Site not responding. Last check: 2007-11-06)
		has been obtained by using the reconstructedsecondary hadronic mass in semileptonic decays of B hadrons, and found to be: Vub/Vcb=0.104+-0.012(stat.)+-0.015(syst.)+-0.009(model) The charm semileptonic branching ratio was measured using a double tag method based on the detection of exclusively reconstructed D mesons accompanied by a lepton in the opposite hemisphere, giving: BR(c--> l)=(9.58+-0.42(stat.)+-0.28(syst.))% ">
		Abstract: The inclusive direct and cascade semileptonic branching ratios of the b quarkwere measured from a fit to the lepton momentum spectrum in the B-hadron rest frame, exploiting the charge correlation between the lepton and the heavy meson:BR(bar(b)-->l+) = 10.32+-0.12(stat.)+-0.27(syst.)+0.31-0.21(model) BR(bar(b)-->bar(c)--> l-) = 7.32+-0.26(stat.)+-0.32(syst.)+0.06-0.16(model)BR(bar(b)-->c--> l+) = 0.94+-0.16(stat.)+-0.28(syst.)+0.33-0.50+-(model)The value of the Vcb
		has been obtained by using the reconstructedsecondary hadronic mass in semileptonic decays of B hadrons, and found to be: Vub/Vcb=0.104+-0.012(stat.)+-0.015(syst.)+-0.009(model) The charm semileptonic branching ratio was measured using a double tag method based on the detection of exclusively reconstructed D mesons accompanied by a lepton in the opposite hemisphere, giving: BR(c--> l)=(9.58+-0.42(stat.)+-0.28(syst.))%
	www.dpf99.library.ucla.edu /session3/margoni0311.html (374 words)

	Definition of Decay mode
		Typically one decay mode predominates for a particular nuclide.
		Branching ratios are used when this is not true.
		A decay will sometimes leave the nucleus in an excited state.
	www.wordiq.com /definition/Decay_mode (161 words)

	Alternatives to Traditional Transportation Fuels 1994 - Volume 2, Greenhouse Gas Emissions (Site not responding. Last check: 2007-11-06)
		Infrared absorptivity is a dimensionless quantity equal to the ratio of the absorbed infrared radiation to the infrared radiation incident on a given surface.
		K.P. Shine and A. Sinha, “Sensitivity of the Earth's Climate to Height-Dependent Changes in the Water Vapor Mixing Ratio,”; Nature 354 (1991):382-384, and D. Lubin, “The Role of Tropical Super Greenhouse Effect in Healing the Ocean Surface,” Science 265 (1994):224-227.
		C.A. Cantrell and others, &#147;Branching Ratios for the Singlet Oxygen and Nitrous Oxide Reaction,” Journal of Geophysical Research 99 (1994):3739-3743.
	www.eia.doe.gov /cneaf/pubs_html/attf94_v2/refs.html (2413 words)

	Energy Levels and Branching Ratios of Tm3+ in Ten Garnet Laser Materials - Storming Media
		Energy Levels and Branching Ratios of Tm3+ in Ten Garnet Laser Materials
		Abstract: A prediction of laser performance of Tm transitions from the F4 to the H6 manifolds in ten garnets has been made by using a quantum-mechanical model.
		Theoretical energy levels, branching ratios, and population inversion percentages were calculated to determine threshold as a function of temperature.
	www.stormingmedia.us /47/4725/A472532.html (161 words)

	Theoretical Temperature-Dependent Branching Ratios and Laser Thresholds of the 5I(7)-5I(8) Transition Levels of Ho3(+) ...
		Theoretical Temperature-Dependent Branching Ratios and Laser Thresholds of the 5I(7)-5I(8) Transition Levels of Ho3(+) in Ten Garnets - Storming Media
		Theoretical Temperature-Dependent Branching Ratios and Laser Thresholds of the 5I(7)-5I(8) Transition Levels of Ho3(+) in Ten Garnets
		The magnetic and electric dipole transition probabilities are used to predict theoretical temperature dependent branching ratios and laser thresholds of a quasi four level laser for each of these garnets.
	www.stormingmedia.us /46/4666/A466622.html (210 words)

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