5,936 research outputs found

    Discovery potential for Higgs bosons beyond the SM

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    The discovery potential of the CMS detector for the MSSM neutral and charged Higgs bosons at the LHC is presented based on studies with full detector simulation and event reconstruction of the principal discovery channels.Comment: Prepared for International Europhysics Conference on High Energy Physics (EPS-HEP2007), Manchester, England, 19-25 Jul 200

    Summary of the CMS Discovery Potential for the MSSM SUSY Higgses

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    This work summarises the present understanding of the expected MSSM SUSY Higgs reach for CMS. Many of the studies presented here result from detailed detector simulations incorporating final CMS detector design and response. With 30 fb-1 the h -> gamma,gamma and h -> bb channels allow to cover most of the MSSM parameter space. For the massive A,H,H+ MSSM Higgs states the channels A,H -> tau,tau and H+ -> tau,nu turn out to be the most profitable ones in terms of mass reach and parameter space coverage. Consequently CMS has made a big effort to trigger efficiently on taus. Provided neutralinos and sleptons are not too heavy, there is an interesting complementarity in the reaches for A,H -> tau,tau and A,H -> chi,chi.Comment: 19 pages, 27 figure

    Measurement of the H/A -> tau tau cross section and possible constraints on tan beta

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    The achievable precision of the cross section times branching ratio measurement from the event rates is estimated for the MSSM H/A -> tau tau decay in the associated production process gg -> b bbar H/A at large tan beta in CMS. This work demonstrates that the above production and decay process exhibit a large sensitivity to tan beta and thus add as a significant observable to a global fit of the SUSY parameters. To illustrate this potential an example is given concerning the achievable tan beta determination accuracy that could be reached from the event rates and for a given set of SUSY parameters and uncertainties

    Symptom burden in community-dwelling older people : temporal trends in the Helsinki Aging Study

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    Background Changes in older people's symptoms across recent decades have not been investigated. Aims We analyzed temporal trends in symptom burden by comparing data from independent, cross-sectional cohorts retrieved in 1989, 1999, 2009, and 2019. Furthermore, we compared the association between symptom burden and psychological wellbeing (PWB) in older men and women. Methods The Helsinki Aging Study recruited a random sample of people aged 75, 80, and 85 in 1989, and random samples aged 75, 80, 85, 90, and 95 in 1999, 2009, and 2019 (four study waves). Altogether, 6263 community-dwelling people answered the questions concerning symptoms in the questionnaire surveys. The symptoms inquired in all study waves were dizziness, back pain, joint pain, chest pain, shortness of breath, and loss of appetite. Symptom burden was calculated according to the number of symptoms and their frequency (score range: 0-6). PWB and the Charlson comorbidity index were calculated. Results Symptom burden decreased in both men and women aged 75 and 80 from 1989 to 2019. Changes in cohorts aged 85 + were nonsignificant. There was a significant difference in symptom burden between men and women in all ages with men having fewer symptoms. PWB decreased with increasing symptom burden. Men had greater PWB than women up to severe levels of symptom burden. Conclusions Symptom burden decreased from 1989 to 2019 in cohorts aged 75-80, whereas changes remained nonsignificant in cohorts aged 85 +. To our knowledge, this is the first study to examine temporal trends in symptom burden.Peer reviewe

    Symptom Burden Is Associated with Psychological Wellbeing and Mortality in Older Adults

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    Importance Over half of outpatient visits are due to physical symptoms; yet, the significance of symptoms in relation to older people's wellbeing and prognosis has gained very little research attention. Objectives This study aims to analyze the prognostic value of symptom burden, derived from symptom count and frequency, in an older cohort aged 75 to 95. We also explore the association between symptom burden and psychological wellbeing. Design Randomly assigned cohorts of community-dwelling people aged 75-95 filled in the postal questionnaire of the Helsinki Aging Study in 2009. Setting Community-based, postal questionnaires (survey response rate 74%). Participants 1583 community-dwelling people aged 75-95 in the urban Helsinki area. Main outcomes and measures The inquired symptoms were dizziness, back pain, joint pain, chest pain or discomfort, shortness of breath, leg pain when walking, loss of appetite, and urinary incontinence. Symptom burden was calculated according to the number of symptoms and their frequency (score range: 0-8). The participants were subdivided into four groups according to their symptom burden. Mortality data was extracted from the Finnish Population Register in 2014. Psychological wellbeing (PWB) was measured using the validated PWB score. Results Of 1583 participants, 18% reported no symptoms over the past 2 weeks (Group 0), 31% scored 0.5-1 in the symptom burden score (Group 1), 23% scored 1.5-2 (Group 2), and 28% scored 2.5-8 (Group 3). There was a linear relationship between symptom burden and comorbidities, functional status, falls, and PWB. The groups showed a significant difference in 5-year mortality, even adjusted for age, sex, and comorbidities: Group 1 1.18, 95% CI 0.84-1.66; Group 2 1.63, 95% CI 1.15-2.31, and Group 3 2.08, 95% CI 1.49-2.91 compared to Group 0 (p for linearityPeer reviewe

    Prevalence of Musculoskeletal Pain and Analgesic Treatment Among Community-Dwelling Older Adults : Changes from 1999 to 2019

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    Background Pain is undertreated in older populations. At the same time, increased use of opioids is of concern in the Western world. Aims We sought to analyze temporal trends in musculoskeletal pain and prescribed analgesic treatment among community-dwelling people aged 75-95 years using cross-sectional cohort data spanning 20 years. Methods The Helsinki Aging Study recruited random samples of people aged 75, 80, 85, 90, and 95 years in 1999, 2009, and 2019. In total, 5707 community-dwelling persons participated in the study. The participants reported their medical diagnoses, regular prescription medications, and the presence of back pain or joint pain within the last 2 weeks (never, sometimes, or daily). We compared analgesic use among participants reporting and not reporting musculoskeletal pain in 1999, 2009, and 2019. Results Of the participants, 57-61% reported intermittent or daily musculoskeletal pain. The percentage receiving a prescribed daily analgesic increased from 9% in 1999 to 16% in 2019. The use of non-steroidal anti-inflammatory drugs (NSAIDs) decreased from 1999 to 2019, while the use of paracetamol increased from 2 to 11%. Opioids were taken by 2% in 1999 and 3% in 2019. Of those reporting daily musculoskeletal pain, 20%, 35%, and 32% received regular pain medication in 1999, 2009, and 2019, respectively. Conclusions Pain remains undertreated in the community-dwelling older population, although the use of regular prescribed analgesics increased between 1999 and 2019. The use of NSAIDs has decreased, while the use of paracetamol has increased. Daily opioid use has remained modest.Peer reviewe

    Prevalence of Musculoskeletal Pain and Analgesic Treatment Among Community-Dwelling Older Adults : Changes from 1999 to 2019

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    Background Pain is undertreated in older populations. At the same time, increased use of opioids is of concern in the Western world. Aims We sought to analyze temporal trends in musculoskeletal pain and prescribed analgesic treatment among community-dwelling people aged 75-95 years using cross-sectional cohort data spanning 20 years. Methods The Helsinki Aging Study recruited random samples of people aged 75, 80, 85, 90, and 95 years in 1999, 2009, and 2019. In total, 5707 community-dwelling persons participated in the study. The participants reported their medical diagnoses, regular prescription medications, and the presence of back pain or joint pain within the last 2 weeks (never, sometimes, or daily). We compared analgesic use among participants reporting and not reporting musculoskeletal pain in 1999, 2009, and 2019. Results Of the participants, 57-61% reported intermittent or daily musculoskeletal pain. The percentage receiving a prescribed daily analgesic increased from 9% in 1999 to 16% in 2019. The use of non-steroidal anti-inflammatory drugs (NSAIDs) decreased from 1999 to 2019, while the use of paracetamol increased from 2 to 11%. Opioids were taken by 2% in 1999 and 3% in 2019. Of those reporting daily musculoskeletal pain, 20%, 35%, and 32% received regular pain medication in 1999, 2009, and 2019, respectively. Conclusions Pain remains undertreated in the community-dwelling older population, although the use of regular prescribed analgesics increased between 1999 and 2019. The use of NSAIDs has decreased, while the use of paracetamol has increased. Daily opioid use has remained modest.Peer reviewe

    Optical projection tomography as a tool for 3D imaging of hydrogels

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    An Optical Projection Tomography (OPT) system was developed and optimized to image 3D tissue engineered products based in hydrogels. We develop pre-reconstruction algorithms to get the best result from the reconstruction procedure, which include correction of the illumination and determination of sample center of rotation (CoR). Existing methods for CoR determination based on the detection of the maximum variance of reconstructed slices failed, so we develop a new CoR search method based in the detection of the variance sharpest local maximum. We show the capabilities of the system to give quantitative information of different types of hydrogels that may be useful in its characterization.The authors thank to Tekes, Finnish Cultural Foundation, CIMO, Jane and Aatos Erkko Foundation and EXTREMA COST Action MP1207 for supporting this work

    SOXS: a wide band spectrograph to follow up transients

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    SOXS (Son Of X-Shooter) will be a spectrograph for the ESO NTT telescope capable to cover the optical and NIR bands, based on the heritage of the X-Shooter at the ESO-VLT. SOXS will be built and run by an international consortium, carrying out rapid and longer term Target of Opportunity requests on a variety of astronomical objects. SOXS will observe all kind of transient and variable sources from different surveys. These will be a mixture of fast alerts (e.g. gamma-ray bursts, gravitational waves, neutrino events), mid-term alerts (e.g. supernovae, X-ray transients), fixed time events (e.g. close-by passage of minor bodies). While the focus is on transients and variables, still there is a wide range of other astrophysical targets and science topics that will benefit from SOXS. The design foresees a spectrograph with a Resolution-Slit product ~ 4500, capable of simultaneously observing over the entire band the complete spectral range from the U- to the H-band. The limiting magnitude of R~20 (1 hr at S/N~10) is suited to study transients identified from on-going imaging surveys. Light imaging capabilities in the optical band (grizy) are also envisaged to allow for multi-band photometry of the faintest transients. This paper outlines the status of the project, now in Final Design Phase.Comment: 12 pages, 14 figures, to be published in SPIE Proceedings 1070
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