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Sökning: WFRF:(OSBORNE SJ)

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1.
  • Schael, S, et al. (författare)
  • Precision electroweak measurements on the Z resonance
  • 2006
  • Ingår i: Physics Reports. - : Elsevier BV. - 0370-1573 .- 1873-6270. ; 427:5-6, s. 257-454
  • Forskningsöversikt (refereegranskat)abstract
    • We report on the final electroweak measurements performed with data taken at the Z resonance by the experiments operating at the electron-positron colliders SLC and LEP. The data consist of 17 million Z decays accumulated by the ALEPH, DELPHI, L3 and OPAL experiments at LEP, and 600 thousand Z decays by the SLID experiment using a polarised beam at SLC. The measurements include cross-sections, forward-backward asymmetries and polarised asymmetries. The mass and width of the Z boson, m(Z) and Gamma(Z), and its couplings to fermions, for example the p parameter and the effective electroweak mixing angle for leptons, are precisely measured: m(Z) = 91.1875 +/- 0.0021 GeV, Gamma(Z) = 2.4952 +/- 0.0023 GeV, rho(l) = 1.0050 +/- 0.0010, sin(2)theta(eff)(lept) = 0.23153 +/- 0.00016. The number of light neutrino species is determined to be 2.9840 +/- 0.0082, in agreement with the three observed generations of fundamental fermions. The results are compared to the predictions of the Standard Model (SM). At the Z-pole, electroweak radiative corrections beyond the running of the QED and QCD coupling constants are observed with a significance of five standard deviations, and in agreement with the Standard Model. Of the many Z-pole measurements, the forward-backward asymmetry in b-quark production shows the largest difference with respect to its SM expectation, at the level of 2.8 standard deviations. Through radiative corrections evaluated in the framework of the Standard Model, the Z-pole data are also used to predict the mass of the top quark, m(t) = 173(+10)(+13) GeV, and the mass of the W boson, m(W) = 80.363 +/- 0.032 GeV. These indirect constraints are compared to the direct measurements, providing a stringent test of the SM. Using in addition the direct measurements of m(t) and m(W), the mass of the as yet unobserved SM Higgs boson is predicted with a relative uncertainty of about 50% and found to be less than 285 GeV at 95% confidence level. (c) 2006 Elsevier B.V. All rights reserved.
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  • Scherer, SW, et al. (författare)
  • Human chromosome 7: DNA sequence and biology
  • 2003
  • Ingår i: Science (New York, N.Y.). - : American Association for the Advancement of Science (AAAS). - 1095-9203 .- 0036-8075. ; 300:5620, s. 767-772
  • Tidskriftsartikel (refereegranskat)abstract
    • DNA sequence and annotation of the entire human chromosome 7, encompassing nearly 158 million nucleotides of DNA and 1917 gene structures, are presented. To generate a higher order description, additional structural features such as imprinted genes, fragile sites, and segmental duplications were integrated at the level of the DNA sequence with medical genetic data, including 440 chromosome rearrangement breakpoints associated with disease. This approach enabled the discovery of candidate genes for developmental diseases including autism.
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  • AKSELA, H, et al. (författare)
  • PARTIAL AUGER DECAY-RATES OF CORE-IONIZED MOLECULAR-STATES IN HCL AND DCL
  • 1995
  • Ingår i: JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS. - : IOP PUBLISHING LTD. - 0953-4075. ; 28:19, s. 4259-4268
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
    • The Cl 2p ionization and the subsequent 2p(-1) --> 2 pi(-2) Auger decay in HCl and DCl molecules have been studied using synchrotron radiation. The Anger spectra have been decomposed and assigned to the transitions from the (2) Pi(1/2), (2) Sigma(1/2) and
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19.
  • AUSMEES, A, et al. (författare)
  • OBSERVATION OF ANOMALOUS BEHAVIOR OF THE XE 4D PHOTOELECTRON SATELLITES
  • 1995
  • Ingår i: PHYSICAL REVIEW A. - : AMER INST PHYSICS. - 1050-2947. ; 52:4, s. 2943-2947
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
    • The Xe 4d photoelectron satellites have been studied in the photon energy region 90-200 eV. The substantially improved energy resolution has enabled us to determine a wealth of satellites. A comparison of the satellite spectra at the intermediate excitati
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20.
  • Bairnsfather, JE, et al. (författare)
  • Investigating the Relationship Between Childhood Music Practice and Pitch-Naming Ability in Professional Musicians and a Population-Based Twin Sample
  • 2022
  • Ingår i: Twin research and human genetics : the official journal of the International Society for Twin Studies. - : Cambridge University Press (CUP). - 1832-4274. ; 25:3, s. 140-148
  • Tidskriftsartikel (refereegranskat)abstract
    • The relationship between pitch-naming ability and childhood onset of music training is well established and thought to reflect both genetic predisposition and music training during a critical period. However, the importance of the amount of practice during this period has not been investigated. In a population sample of twins (N = 1447, 39% male, 367 complete twin pairs) and a sample of 290 professional musicians (51% male), we investigated the role of genes, age of onset of playing music and accumulated childhood practice on pitch-naming ability. A significant correlation between pitch-naming scores for monozygotic (r = .27, p < .001) but not dizygotic twin pairs (r = −.04, p = .63) supported the role of genetic factors. In professional musicians, the amount of practice accumulated between ages 6 and 11 predicted pitch-naming accuracy (p = .025). In twins, age of onset was no longer a significant predictor once practice was considered. Combined, these findings are in line with the notion that pitch-naming ability is associated with both genetic factors and amount of early practice, rather than just age of onset per se. This may reflect a dose–response relation between practice and pitch-naming ability in genetically predisposed individuals. Alternatively, children who excel at pitch-naming may have an increased tendency to practice.
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21.
  • Bairnsfather, JE, et al. (författare)
  • Use of explicit priming to phenotype absolute pitch ability
  • 2022
  • Ingår i: PloS one. - : Public Library of Science (PLoS). - 1932-6203. ; 17:9, s. e0273828-
  • Tidskriftsartikel (refereegranskat)abstract
    • Musicians with absolute pitch (AP) can name the pitch of a musical note in isolation. Expression of this unusual ability is thought to be influenced by heritability, early music training and current practice. However, our understanding of factors shaping its expression is hampered by testing and scoring methods that treat AP as dichotomous. These fail to capture the observed variability in pitch-naming accuracy among reported AP possessors. The aim of this study was to trial a novel explicit priming paradigm to explore phenotypic variability of AP. Thirty-five musically experienced individuals (Mage = 29 years, range 18–68; 14 males) with varying AP ability completed a standard AP task and the explicit priming AP task. Results showed: 1) phenotypic variability of AP ability, including high-accuracy AP, heterogeneous intermediate performers, and chance-level performers; 2) intermediate performance profiles that were either reliant on or independent of relative pitch strategies, as identified by the priming task; and 3) the emergence of a bimodal distribution of AP performance when adopting scoring criteria that assign credit to semitone errors. These findings show the importance of methods in studying behavioural traits, and are a key step towards identifying AP phenotypes. Replication of our results in larger samples will further establish the usefulness of this priming paradigm in AP research.
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22.
  • Carravetta, V, et al. (författare)
  • Excitation-energy-dependent resonant photoemission: C1s-pi* spectra of carbon monoxide
  • 1997
  • Ingår i: PHYSICAL REVIEW A. - : AMER INST PHYSICS. - 1050-2947. ; 56:6, s. 4665-4674
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
    • High-resolution measurements of the x-ray resonant photoemission of CO near the C1s-->pi* transition are presented. The branching ratios for the valence shell ionization close to the resonance how a strong dependence on the photon energy with a clear asym
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23.
  • deBrito, AN, et al. (författare)
  • Auger decay of the molecular field split S 2p core excited states in HS radical
  • 1997
  • Ingår i: JOURNAL OF CHEMICAL PHYSICS. - : AMER INST PHYSICS. - 0021-9606. ; 106:1, s. 18-23
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
    • Using synchrotron radiation, very high resolution electron spectra at the 2p --> 6a(1) and 2p --> 3b(2) resonances of H2S have been recorded. Auger transitions from molecular field split S 2p hole states of HS* fragment, created by fast dissociation of th
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  • Kikas, A, et al. (författare)
  • High-resolution study of the correlation satellites in photoelectron spectra of the rare gases
  • 1996
  • Ingår i: JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA. - : ELSEVIER SCIENCE BV. - 0368-2048. ; 77:3, s. 241-266
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
    • High-resolution, synchrotron radiation excited valence photoelectron satellite spectra, taken at the magic angle, of all the rare gases, He, Ne, Ar, Kr and Xe, are presented. The facilities at the Finnish beam line at the MAX laboratory have been used to
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26.
  • Kukk, E, et al. (författare)
  • Auger decay of the dissociating core-excited states in the HCl and DCl molecules
  • 1996
  • Ingår i: JOURNAL OF CHEMICAL PHYSICS. - : AMER INST PHYSICS. ; 104:12, s. 4475-4480
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
    • High-resolution Auger electron spectra from the decay of the Cl 2p-->sigma* excitation in HCl and DCl have been measured. The spectra are analyzed, separating molecular and atomic features, which are assigned to transitions to the HCl (5 sigma 2 pi)(4) si
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27.
  • Kukk, E, et al. (författare)
  • Core-to-Rydberg excitations and their Auger decay in the HCl and DCl molecules
  • 1996
  • Ingår i: PHYSICAL REVIEW A. - : AMER INST PHYSICS. - 1050-2947. ; 54:3, s. 2121-2126
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
    • The resonant Anger electron spectra of the HCl and DCl molecules have been measured at the first core-to-Rydberg resonances. The low binding energy region of the spectra has been decomposed into transitions to different bound states and their vibrational
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  • Osborne, SJ, et al. (författare)
  • The vibrationally resolved C 1 s core photoelectron spectra of methane and ethane
  • 1997
  • Ingår i: JOURNAL OF CHEMICAL PHYSICS. - : AMER INST PHYSICS. - 0021-9606. ; 106:5, s. 1661-1668
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
    • Recent progress in the development of high-resolution electron spectrometers in combination with highly monochromatized undulator radiation has allowed observation of the vibrationally resolved gas-phase C Is photoelectron spectra of methane and ethane. F
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  • SAIRANEN, OP, et al. (författare)
  • THE RESONANCE AUGER DECAY OF THE XE 4D(3/2,5/2)(-1)NP, N=7,8 STATES STUDIED BY HIGH-RESOLUTION EXPERIMENT
  • 1995
  • Ingår i: JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS. - : IOP PUBLISHING LTD. - 0953-4075. ; 28:20, s. 4509-4528
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
    • The de-excitation of the resonantly excited Xe 4d(3/2,5/27p)(-1) and 4d(3/2,5/2)(-1)8p states is studied with very high photon and electron energy resolution using the new Finnish beamline at MAX-laboratory, Lund, Sweden. The fine structure of the spectra
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33.
  • Sorensen, SL, et al. (författare)
  • Site-selective participator decay of core-excited butadiene
  • 1996
  • Ingår i: JOURNAL OF CHEMICAL PHYSICS. - 0021-9606. ; 105:24, s. 10719-10724
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
    • The decay of core-excited electronic states in free 1,3 trans butadiene molecules has been studied using high-resolution synchrotron radiation and electron spectrometry. The core-level energy Shift between the terminal and central carbon atoms is 0.64 eV
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34.
  • Sundin, S, et al. (författare)
  • Auger decay of core-excited higher Rydberg states of carbon monoxide
  • 1997
  • Ingår i: JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS. - : IOP PUBLISHING LTD. - 0953-4075. ; 30:19, s. 4267-4278
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
    • The de-excitation of higher core-excited C 1s(-1)np Rydberg states of carbon monoxide has been studied. It is found that already with a main quantum number of 4 or higher, Rydberg states of p-symmetry can be successfully treated within the single-particle
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35.
  • Sundin, S, et al. (författare)
  • Collapse of vibrational structure in the Auger resonant Raman spectrum of CO by frequency detuning
  • 1997
  • Ingår i: PHYSICAL REVIEW LETTERS. - : AMER INST PHYSICS. - 0031-9007. ; 79:8, s. 1451-1454
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
    • Observations made in the C1s-->pi* Auger resonant Raman spectra of carbon monoxide demonstrate that the vibrational structure in such spectra is strongly frequency dependent. In the limit of narrow bandpass photon excitation, the vibrational excitations o
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36.
  • Sundin, S, et al. (författare)
  • Vibrationally selective resonant Auger spectroscopy of the 3p core-to-Rydberg excitation in CO
  • 1997
  • Ingår i: PHYSICAL REVIEW A. - : AMER INST PHYSICS. - 1050-2947. ; 56:1, s. 480-487
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
    • The Auger decay of the C 1s-->3p excitation in CO has been studied by means of vibrationally selective angle-resolved electron spectroscopy. It is shown that for these highly excited Rydberg states the strict spectator model works excellently in describin
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37.
  • SVENSSON, S, et al. (författare)
  • FAST DISSOCIATION OF NEUTRAL DOUBLY-EXCITED STATES ABOVE THE S-2P IONIZATION THRESHOLD IN H2S
  • 1995
  • Ingår i: JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS. - : IOP PUBLISHING LTD. ; 28:10
  • Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
    • A very rapid dissociation of core doubly excited stares in a molecule has been observed for the first time. The channel is identified in the Anger electron spectra of H2S where the resonating structures, at higher kinetic energy than the normal Auger LVV
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  • Svensson, S, et al. (författare)
  • New end station for the study of gases, liquids, and solid films at the MAX laboratory
  • 1996
  • Ingår i: REVIEW OF SCIENTIFIC INSTRUMENTS. - : AMER INST PHYSICS. ; 67:6, s. 2149-2156
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
    • A new end station equipped with a very high-resolution SES-200 electron energy analyzer has been constructed for the study of gases and soft molecular materials. The analyzer is rotatable around the direction of the photon beam, allowing angular-dependent
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