13C NMR spectra of 2,3-dihydro-1H-benzo[b]azepines: Differentiation of diastereomersWith the exception of the regression analysis, this work forms part of the thesis for a...
in: Organic Magnetic Resonance, in: Organic Magnetic Resonance . - Chichester : Wiley, ISSN 0030-4921, ZDB-ID 1475029-6 Vol. 21 (8. 1983), p. 487-490
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1983
The 13C NMR spectra of 23 2,3-dihydro-1H-benzo[b]azepines, including nine pairs of diastereomers separated by chromatography, [(2R*, 3R*) and (2R*), 3S*)] are hereby assigned and discussed. The relative configurations of the diastereomers were assigned by two methods. The first, based on the... mehr
A measurement ofD meson production inZ 0 hadronic decays
in: The European physical journal , ISSN 1434-6052, Vol. 59 (4. 1993), p. 533-545 Zugang:
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1993
Abstract A study of the fragmentation properties of charm and bottom quarks intoD mesons is presented. From 263 700Z 0 hadronic decays collected in 1991 with the DELPHI detector at the LEP collider,D 0,D + andD *+ are reconstructed in the modesK − π +,K − π + K + andD 0 π + followed byD... mehr
Measurement of the triple-gluon vertex from 4-jet events at LEP
in: The European physical journal , ISSN 1434-6052, Vol. 59 (3. 1993), p. 357-368 Zugang:
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1993
Abstract From the combined data of 1990 and 1991 of the DELPHI experiment at LEP, 13057 4-jet events are obtained and used for determining the contribution of the triple-gluon vertex. The relevant variables are the generalized Nachtmann Reiter angle θ NR * and the opening angle of the two least... mehr
Determination ofα s using the next-to-leading-log approximation of QCD
in: The European physical journal , ISSN 1434-6052, Vol. 59 (1. 1993), p. 21-33 Zugang:
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1993
Abstract A new measurement of αs is obtained from the distributions in thrust, heavy jet mass, energy-energy correlation and two recently introduced jet broadening variables following a method proposed by Catani, Trentadue, Turnock and Webber. This method includes the full calculation ofO( s 2 )... mehr
A measurement ofB meson production and lifetime usingDl − events inZ 0 decays
in: The European physical journal , ISSN 1434-6052, Vol. 57 (2. 1993), p. 181-195 Zugang:
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1993
Abstract A study ofB meson decays intoDl X final states is presented. In these events, neutral and chargedD mesons originate predominantly fromB + andB 0 decays, respectively. The dilution of this correlation due toD ** production has been taken into account. From 263 700 hadronicZ 0 decays... mehr
Search for pair-produced heavy scalars in Z0 decays
in: The European physical journal , ISSN 1434-6052, Vol. 64 (2. 1994), p. 183-193 Zugang:
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1994
Abstract A search for charged Higgs bosons decaying into quarks is described, based on statistics of around 1.7 million hadronic Zo decays detected in DELPHI. Despite the very high background from standard hadronic decays of the Zo, masses in the range up to 43.5 GeV/c 2 are excluded at the 95%... mehr
Invariant mass dependence of particle correlations in hadronic final states from the decay of theZ 0
in: The European physical journal , ISSN 1434-6052, Vol. 63 (1. 1994), p. 17-28 Zugang:
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1994
Abstract Two-particle correlations in invariant mass are studied separately for like-sign and unlike-sign pions. Strong correlations are observed only at small masses. The correlations decrease very rapidly for like-sign pions and slowly for unlike-sign pions, manifesting different particle... mehr
A precision measurement of the average lifetime ofB hadrons
in: The European physical journal , ISSN 1434-6052, Vol. 63 (1. 1994), p. 3-15 Zugang:
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1994
Abstract The average lifetime ofB hadrons was measured using data collected with the DELPHI detector at the LEP collider during 1991 and 1992. The measurement was performed using two different anayses. The first method was an improvement on a previous technique, which used charged particle impact... mehr
Study of hard scattering processes in multihadron production from γγ collisions at LEP
in: The European physical journal , ISSN 1434-6052, Vol. 62 (3. 1994), p. 357-365 Zugang:
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1994
Abstract The production of multihadronic states in γγ collisions at LEP has been studied with the DELPHI detector. The analyzed data correspond to an integrated luminosity of about 32pb−1, collected in the LEP runs of 1990–1992. Minimum bias data and a sample of events with jets at highp T... mehr
Production rate and decay lifetime measurements ofB s 0 mesons at LEP usingD s andϕ mesons
in: The European physical journal , ISSN 1434-6052, Vol. 61 (3. 1994), p. 407-419 Zugang:
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1994
Abstract The study of the properties of inclusive production ofD s mesons and of events in which a ϕ and a muon are present in the same jet provides two independent measurements of the probability,f s w , for a heavy quark to hadronize into a strangeB orD meson. The data sample analysed... mehr
Production of strange B-baryons decaying into Ξ∓−ℓ∓ pairs at LEP
in: The European physical journal , ISSN 1434-6052, Vol. 68 (4. 1995), p. 541-553 Zugang:
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1995
Abstract An excess of events containing, in a jet, a samesign Ξ∓−ℓ∓ pair as compared to those with an oppositesign Ξ∓−ℓ± pair has been observed in an analysis of 1.7 million hadronic Z0 decays collected by the DELPHI detector at LEP between 1991 and 1993 inclusive. The... mehr
Lifetime and production rate of beauty baryons from Z decays
in: The European physical journal , ISSN 1434-6052, Vol. 68 (3. 1995), p. 375-390 Zugang:
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1995
Abstract The production and decay of beauty baryons (b-baryons) have been studied using 1.7×106 Z hadronic decays collected by the DELPHI detector at LEP. Three different techniques were used to identify theb-baryons. The first method used pairs of a Λ and a lepton to tag theb-baryon decay. The... mehr
Lifetime of charged and neutral B hadrons using event topology
in: The European physical journal , ISSN 1434-6052, Vol. 68 (3. 1995), p. 363-374 Zugang:
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1995
Abstract The lifetimes of charged and neutral B hadrons have been measured using data collected by the DELPHI experiment at LEP between 1991 and 1993. B hadrons are tagged as jets with a secondary vertex and the charge of the B candidate is taken to be the sum of the charges of the particles in... mehr
B * production in Z decays
in: The European physical journal , ISSN 1434-6052, Vol. 68 (3. 1995), p. 353-362 Zugang:
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1995
Abstract The decayB *→B γ has been observed with the DELPHI detector at LEP, where theB * meson is produced inZ boson decays. The combination of inclusively reconstructedB mesons with well-measured converted photons yields a measurement of the flavour-averagedB *-B mass difference of 45.5±0.3... mehr
A measurement of B+ and B0 lifetimes using $$\bar D\ell ^ + $$ events
in: The European physical journal , ISSN 1434-6052, Vol. 68 (1. 1995), p. 13-23 Zugang:
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1995
Abstract A measurement of B meson lifetimes is presented using data collected from 1991 to 1993 by the DELPHI detector at the LEP collider. Samples of events with a D meson and a lepton in the same jet are selected where $$\bar D^{^0 } \ell ^ + $$ and D*ℓ+ events originate mainly from the... mehr
Strange baryon production in Z hadronic decays
in: The European physical journal , ISSN 1434-6052, Vol. 67 (4. 1995), p. 543-553 Zugang:
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1995
Abstract A study of the production of strange octet and decuplet baryons in hadronic decays of the Z recorded by the DELPHI detector at LEP is presented. This includes the first measurement of the∑ ± average multiplicity. The total and differential cross sections, the event topology and the... mehr
