175 research outputs found

    Expectations of gains in the second half of life: a study of personal conceptions of enrichment in a lifespan perspective

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    Item does not contain fulltextThis research focuses on cognitive representations of the personal future during the second half of life. To investigate the developmental perspectives of people growing older, the anticipation of possible gains is studied. The participants of this study took part in the German Aging Survey and the sample comprises 2,934 subjects aged 40–85 years. To assess their anticipated ‘gains’, we selected the future-related items from the SELE-questionnaire, a sentence completion instrument administered for the Survey. We assumed that many would anticipate further enrichment by new social and societal activities in retirement, but the most frequently-mentioned gains referred to changes in life style and leisure activities, especially travelling. Plans and wishes feature a predominantly leisure-oriented life style. Among the anticipations, those concerned with generativity – caring for others, societal commitment, vocational ambitions – substantially decrease at about the age of 50 years. It was hypothesised that age, gender, living in the former East or West Germany, health, education, income, and perceived control would influence the cognitive representation of the future. To examine the effects of these personal and situational factors on gain anticipations, multiple regression analyses were performed. With respect to all independent variables, differences in the kinds of expected gains were found. The outcomes are discussed with reference to lifespan developmental theory and the role of older people in society

    Personal concepts of stability in the second half of life

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    The study contributes to the conceptualization of stability in the development of later life by answering four questions: Are there certain concepts of no-change in the population of aging adults? What are the issues that people combine with the idea of no-change? Are the issues of different importance for different groups? What kind of time perspective is expressed in their expectations of no-change? Stability expectations were investigated within a representative sample of about 2934 Germans aged 40-85 who live independently in the community. By means of a sentence completion instrument subjects provided spontaneous statements about self and life conceptions. Content analysis indicated clearly two different concepts of stability among the respondents in the second half of life: One concerns the continuation of gains, the other the maintenance of the status quo. One third of the expectations deals with further gains. Two thirds of the statements, however, refers to the maintenance of the status quo. Expected maintenance of the status quo showed a strong association with older age. In terms of Raynor's [Raynor, J. O. (1982). A theory of personal functioning and change. In J. O. Raynor &amp; E. Entin (Eds.), Motivation, career striving and aging (pp. 249-302). Washington: Hemisphere Publishing Corporation] theory of the time-bound sense of self, the concept 'continuation of gains' reflects a future sense of self, while the concept 'maintenance of the status quo' refers to a more present sense of self. (C) 2003 Elsevier Inc. All rights reserved.</p

    Partners and others: Social provisions and loneliness among married Dutch men and women in the second half of life.

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    Contains fulltext : 55911.pdf (publisher's version ) (Closed access)The main goal of this article was to test whether the perceived availability of social provisions within and outside marriage in a representative Dutch sample of men and women in late adulthood would differ from findings from similar studies in the United States. We predicted that there would be more similarity between married men and women in self-reported social relationships, social provisions, and loneliness in the more feminine culture of The Netherlands than is often reported in research from the United States, where the dominant culture is more masculine. Data are from the Dutch Aging survey that involved a representative sample of 983 people between the ages of 40 and 85. As predicted, we found similarity between men and women in the size and composition of core networks, the provision of emotional support to and from the partner, and in the provision of instrumental support to others. Contrary to our hypothesis, women exchanged more emotional support with friends, children, and other family and identified these persons more often as companions in leisure activities. Despite the women’s greater reported involvement in other relationships, these men were not lonelier than were women. For both men and women, social provisions from close relationships beyond the partner relation contributed to alleviating loneliness.22 p

    Measurements of branching fraction ratios and CP-asymmetries in suppressed B^- -> D(-> K^+ pi^-)K^- and B^- -> D(-> K^+ pi^-)pi^- decays

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    We report the first reconstruction in hadron collisions of the suppressed decays B^- -> D(-> K^+ pi^-)K^- and B^- -> D(-> K^+ pi^-)pi^-, sensitive to the CKM phase gamma, using data from 7 fb^-1 of integrated luminosity collected by the CDF II detector at the Tevatron collider. We reconstruct a signal for the B^- -> D(-> K^+ pi^-)K^- suppressed mode with a significance of 3.2 standard deviations, and measure the ratios of the suppressed to favored branching fractions R(K) = [22.0 \pm 8.6(stat)\pm 2.6(syst)]\times 10^-3, R^+(K) = [42.6\pm 13.7(stat)\pm 2.8(syst)]\times 10^-3, R^-(K)= [3.8\pm 10.3(stat)\pm 2.7(syst]\times 10^-3, as well as the direct CP-violating asymmetry A(K) = -0.82\pm 0.44(stat)\pm 0.09(syst) of this mode. Corresponding quantities for B^- -> D(-> K^+ pi^-)pi^- decay are also reported.Comment: 8 pages, 1 figure, accepted by Phys.Rev.D Rapid Communications for Publicatio

    Search for Neutral Higgs Bosons in Events with Multiple Bottom Quarks at the Tevatron

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    The combination of searches performed by the CDF and D0 collaborations at the Fermilab Tevatron Collider for neutral Higgs bosons produced in association with b quarks is reported. The data, corresponding to 2.6 fb-1 of integrated luminosity at CDF and 5.2 fb-1 at D0, have been collected in final states containing three or more b jets. Upper limits are set on the cross section multiplied by the branching ratio varying between 44 pb and 0.7 pb in the Higgs boson mass range 90 to 300 GeV, assuming production of a narrow scalar boson. Significant enhancements to the production of Higgs bosons can be found in theories beyond the standard model, for example in supersymmetry. The results are interpreted as upper limits in the parameter space of the minimal supersymmetric standard model in a benchmark scenario favoring this decay mode.Comment: 10 pages, 2 figure

    Observation of the Baryonic Flavor-Changing Neutral Current Decay Lambda_b -> Lambda mu+ mu-

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    We report the first observation of the baryonic flavor-changing neutral current decay Lambda_b -> Lambda mu+ mu- with 24 signal events and a statistical significance of 5.8 Gaussian standard deviations. This measurement uses ppbar collisions data sample corresponding to 6.8fb-1 at sqrt{s}=1.96TeV collected by the CDF II detector at the Tevatron collider. The total and differential branching ratios for Lambda_b -> Lambda mu+ mu- are measured. We find B(Lambda_b -> Lambda mu+ mu-) = [1.73+-0.42(stat)+-0.55(syst)] x 10^{-6}. We also report the first measurement of the differential branching ratio of B_s -> phi mu+ mu- using 49 signal events. In addition, we report branching ratios for B+ -> K+ mu+ mu-, B0 -> K0 mu+ mu-, and B -> K*(892) mu+ mu- decays.Comment: 8 pages, 2 figures, 4 tables. Submitted to Phys. Rev. Let

    Search for the standard model Higgs boson decaying to a bbˉb\bar{b} pair in events with no charged leptons and large missing transverse energy using the full CDF data set

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    We report on a search for the standard model Higgs boson produced in association with a vector boson in the full data set of proton-antiproton collisions at s=1.96\sqrt{s} = 1.96 TeV recorded by the CDF II detector at the Tevatron, corresponding to an integrated luminosity of 9.45 fb1^{-1}. We consider events having no identified charged lepton, a transverse energy imbalance, and two or three jets, of which at least one is consistent with originating from the decay of a bb quark. We place 95% credibility level upper limits on the production cross section times standard model branching fraction for several mass hypotheses between 90 and 150GeV/c2150 \mathrm{GeV}/c^2. For a Higgs boson mass of 125GeV/c2125 \mathrm{GeV}/c^2, the observed (expected) limit is 6.7 (3.6) times the standard model prediction.Comment: Accepted by Phys. Rev. Let

    Search for the standard model Higgs boson decaying to a bb pair in events with one charged lepton and large missing transverse energy using the full CDF data set

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    We present a search for the standard model Higgs boson produced in association with a W boson in sqrt(s) = 1.96 TeV p-pbar collision data collected with the CDF II detector at the Tevatron corresponding to an integrated luminosity of 9.45 fb-1. In events consistent with the decay of the Higgs boson to a bottom-quark pair and the W boson to an electron or muon and a neutrino, we set 95% credibility level upper limits on the WH production cross section times the H->bb branching ratio as a function of Higgs boson mass. At a Higgs boson mass of 125 GeV/c2 we observe (expect) a limit of 4.9 (2.8) times the standard model value.Comment: Submitted to Phys. Rev. Lett (v2 contains clarifications suggested by PRL

    Search for the standard model Higgs boson decaying to a bb pair in events with two oppositely-charged leptons using the full CDF data set

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    We present a search for the standard model Higgs boson produced in association with a Z boson in data collected with the CDF II detector at the Tevatron, corresponding to an integrated luminosity of 9.45/fb. In events consistent with the decay of the Higgs boson to a bottom-quark pair and the Z boson to electron or muon pairs, we set 95% credibility level upper limits on the ZH production cross section times the H -> bb branching ratio as a function of Higgs boson mass. At a Higgs boson mass of 125 GeV/c^2 we observe (expect) a limit of 7.1 (3.9) times the standard model value.Comment: To be submitted to Phys. Rev. Let
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