TUHAT-artikkelit / Articles from TUHAT CRIS

 

Kokoelma sisältää TUHAT-tutkimustietojäjestelmän kautta tallennetut Open Access-artikkelit.

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This collection contains Open Access articles deposited from the University of Helsinki TUHAT CRIS

Uusimmat julkaisut

  • Mugwedi, Lutendo; Ray-Mukherjee, Jayanti; Roy, Kathryn E.; Egoh, Benis; Montesino Pouzols, Federico; Douwes, Errol; Boon, Richard; O'Donoghue, Sean; Slotow, Rob; Di Minin, Enrico; Moilanen, Atte Jaakko; Rouget, Mathieu (2018)
  • The CMS collaboration; Sirunyan, A. M.; Eerola, P.; Kirschenmann, H.; Pekkanen, J.; Voutilainen, M.; Havukainen, J.; Heikkilä, J. K.; Järvinen, T.; Karimäki, V.; Kinnunen, R.; Lampén, T.; Lassila-Perini, K.; Laurila, S.; Lehti, S.; Lindén, T.; Luukka, P.; Mäenpää, T.; Siikonen, H.; Tuominen, E.; Tuominiemi, J.; Tuuva, T. (2018)
    A search for physics beyond the standard model is performed using a sample of high-mass diphoton events produced in proton-proton collisions at root s = 13 TeV. The data sample was collected in 2016 with the CMS detector at the LHC and corresponds to an integrated luminosity of 35.9 fb(-1). The search is performed for both resonant and nonresonant new physics signatures. At 95% confidence level, lower limits on the mass of the first Kaluza-Klein excitation of the graviton in the Randall-Sundrum warped extradimensional model are determined to be in the range of 2.3 to 4.6 TeV, for values of the associated coupling parameter between 0.01 and 0.2. Lower limits on the production of scalar resonances and modelindependent cross section upper limits are also provided. For the large extra-dimensional model of Arkani-amed, Dimopoulos, and Dvali, lower limits are set on the string mass scale M-S ranging from 5.6 to 9.7 TeV, depending on the model parameters. The first exclusion limits are set in the two-dimensional parameter space of a continuum clockwork model.
  • The CMS collaboration; Sirunyan, A. M.; Eerola, P.; Kirschenmann, H.; Pekkanen, J.; Voutilainen, M.; Havukainen, J.; Heikkilä, J. K.; Järvinen, T.; Karimäki, V.; Kinnunen, R.; Lampén, T.; Lassila-Perini, K.; Laurila, S.; Lehti, S.; Lindén, T.; Luukka, P.; Mäenpää, T.; Siikonen, H.; Tuominen, E.; Tuominiemi, J.; Tuuva, T. (2018)
    Results are reported from a search for long-lived particles in proton-proton collisions at root s = 13 TeV delivered by the CERN LHC and collected by the CMS experiment. The data sample, which was recorded during 2015 and 2016, corresponds to an integrated luminosity of 38.5 fb(-1). This search uses benchmark signal models in which long-lived particles are pair-produced and each decays into two or more quarks, leading to a signal with multiple jets and two displaced vertices composed of many tracks. No events with two well-separated high-track-multiplicity vertices are observed. Upper limits are placed on models of R-parity violating supersymmetry in which the long-lived particles are neutralinos or gluinos decaying solely into multijet final states or top squarks decaying solely into dijet final states. For neutralino, gluino, or top squark masses between 800 and 2600 GeV and mean proper decay lengths between 1 and 40 mm, the analysis excludes cross sections above 0.3 fb at 95% confidence level. Gluino and top squark masses are excluded below 2200 and 1400 GeV, respectively, for mean proper decay lengths between 0.6 and 80 mm. A method is provided for extending the results to other models with pair-produced long-lived particles.
  • Mehlig, Kirsten; Bogl, Leonie H.; Hunsberger, Monica; Ahrens, Wolfgang; De Henauw, Stefaan; Iguacel, Isabel; Jilani, Hannah; Molnar, Denes; Pala, Valeria; Russo, Paola; Tornaritis, Michael; Veidebaum, Toomas; Kaprio, Jaakko; Lissner, Lauren (2018)
    Objective: The present study investigated the association between sugar and fat intake in childhood in relation to alcohol use in adolescence. We hypothesized that early exposure to diets high in fat and sugar may affect ingestive behaviours later in life, including alcohol use. Design/Setting/Subjects: Children from the European IDEFICS/I.Family cohort study were examined at ages 5-9 years and followed up at ages 11-16 years. FFQ were completed by parents on behalf of children, and later by adolescents themselves. Complete data were available in 2263 participants. Children's propensities to consume foods high in fat and sugar were calculated and dichotomized at median values. Adolescents' use of alcohol was classified as at least weekly v. less frequent use. Log-binomial regression linked sugar and fat consumption in childhood to risk of alcohol use in adolescence, adjusted for relevant covariates. Results: Five per cent of adolescents reported weekly alcohol consumption. Children with high propensity to consume sugar and fat were at greater risk of later alcohol use, compared with children with low fat and low sugar propensity (relative risk = 2.46; 95% CI 1.47, 4.12), independent of age, sex and survey country. The association was not explained by parental income and education, strict parenting style or child's health-related quality of life and was only partly mediated by sustained consumption of sugar and fat into adolescence. Conclusions: Frequent consumption of foods high in fat and sugar in childhood predicted regular use of alcohol in adolescence.
  • The CMS collaboration; Sirunyan, A. M.; Eerola, P.; Kirschenmann, H.; Pekkanen, J.; Voutilainen, M.; Havukainen, J.; Heikkilä, J. K.; Järvinen, T.; Karimäki, V.; Kinnunen, R.; Lampén, T.; Lassila-Perini, K.; Laurila, S.; Lehti, S.; Lindén, T.; Luukka, P.; Mäenpää, T.; Siikonen, H.; Tuominen, E.; Tuominiemi, J.; Tuuva, T. (2018)
    A search for an exotic decay of the Higgs boson to a pair of light pseudoscalar bosons is performed for the first time in the final state with two b quarks and two tau leptons. The search is motivated in the context of models of physics beyond the standard model (SM), such as two Higgs doublet models extended with a complex scalar singlet (2HDM + S), which include the next-to-minimal supersymmetric SM (NMSSM). The results are based on a data set of proton-proton collisions corresponding to an integrated luminosity of 35.9 fb(-1), accumulated by the CMS experiment at the LHC in 2016 at a center-of-mass energy of 13 TeV. Masses of the pseudoscalar boson between 15 and 60 GeVare probed, and no excess of events above the SM expectation is observed. Upper limits between 3 and 12% are set on the branching fraction B(h -> aa -> 2 tau 2b) assuming the SM production of the Higgs boson. Upper limits are also set on the branching fraction of the Higgs boson to two light pseudoscalar bosons in different 2HDM + S scenarios. Assuming the SM production cross section for the Higgs boson, the upper limit on this quantity is as low as 20% for a mass of the pseudoscalar of 40 GeV in the NMSSM. (C) 2018 The Author(s). Published by Elsevier B.V.
  • The CMS collaboration; Sirunyan, A. M.; Eerola, P.; Kirschenmann, H.; Pekkanen, J.; Voutilainen, M.; Havukainen, J.; Heikkilä, J. K.; Järvinen, T.; Karimäki, V.; Kinnunen, R.; Lampén, T.; Lassila-Perini, K.; Laurila, S.; Lehti, S.; Lindén, T.; Luukka, P.; Siikonen, H.; Tuominen, E.; Tuominiemi, J.; Tuuva, T. (2018)
    Measurements of azimuthal angle and transverse momentum (p(T)) correlations of isolated photons and associated jets are reported for pp and PbPb collisions at root s(NN) = 5.02 TeV. The data were recorded with the CMS detector at the CERN LHC. For events containing a leading isolated photon with p(T)(gamma) > 40 GeV/c and an associated jet with p(T)(jet) > 30 GeV/c, the photon+jet azimuthal correlation and p(T) imbalance in PbPb collisions are studied as functions of collision centrality and p(T)(gamma). The results are compared to pp reference data collected at the same collision energy and to predictions from several theoretical models for parton energy loss. No evidence of broadening of the photon+jet azimuthal correlations is observed, while the ratio p(T)(jet)/p(T)(gamma) decreases significantly for PbPb data relative to the pp reference. All models considered agree within uncertainties with the data. The number of associated jets per photon with p(T)(gamma) > 80GeV/c is observed to be shifted towards lower p(T)(jet) in central PbPb collisions compared to pp collisions. (C) 2018 The Author. Published by Elsevier B.V.
  • Sun, Xiaoyu; Ilca, Serban L.; Huiskonen, Juha T.; Poranen, Minna M. (2018)
    Double-stranded RNA (dsRNA) viruses package several RNA-dependent RNA polymerases (RdRp) together with their dsRNA genome into an icosahedral protein capsid known as the polymerase complex. This structure is highly conserved among dsRNA viruses but is not found in any other virus group. RdRp subunits typically interact directly with the main capsid proteins, close to the 5-fold symmetric axes, and perform viral genome replication and transcription within the icosahedral protein shell. In this study, we utilized Pseudomonas phage Phi 6, a well-established virus self-assembly model, to probe the potential roles of the RdRp in dsRNA virus assembly. We demonstrated that Phi 6 RdRp accelerates the polymerase complex self-assembly process and contributes to its conformational stability and integrity. We highlight the role of specific amino acid residues on the surface of the RdRp in its incorporation during the self-assembly reaction. Substitutions of these residues reduce RdRp incorporation into the polymerase complex during the self-assembly reaction. Furthermore, we determined that the overall transcription efficiency of the Phi 6 polymerase complex increased when the number of RdRp subunits exceeded the number of genome segments. These results suggest a mechanism for RdRp recruitment in the polymerase complex and highlight its novel role in virion assembly, in addition to the canonical RNA transcription and replication functions. IMPORTANCE Double-stranded RNA viruses infect a wide spectrum of hosts, including animals, plants, fungi, and bacteria. Yet genome replication mechanisms of these viruses are conserved. During the infection cycle, a proteinaceous capsid, the polymerase complex, is formed. An essential component of this capsid is the viral RNA polymerase that replicates and transcribes the enclosed viral genome. The polymerase complex structure is well characterized for many double-stranded RNA viruses. However, much less is known about the hierarchical molecular interactions that take place in building up such complexes. Using the bacteriophage Phi 6 self-assembly system, we obtained novel insights into the processes that mediate polymerase subunit incorporation into the polymerase complex for generation of functional structures. The results presented pave the way for the exploitation and engineering of viral self-assembly processes for biomedical and synthetic biology applications. An understanding of viral assembly processes at the molecular level may also facilitate the development of antivirals that target viral capsid assembly.
  • Mäkinen, Anna; Nawaz, Ali; Mäkitie, Antti; Meurman, Jukka H. (2018)
    Purpose: This study examined the prevalence of Candida species in the saliva of oral squamous cell carcinoma patients and its effect on the mortality rate. Materials and Methods: One hundred patients with oral cavity squamous cell carcinoma undergoing protocol treatment at Helsinki University Hospital were recruited into the study from March 2011 through 2014. For comparison, 75 age-matched controls with no current or previously treated oral cancer were recruited. Paraffin-stimulated whole saliva samples were collected and cultivated on CHROMagar Candida medium (CHROMagar, Paris, France) to establish possible Candida growth. The API ID 32C yeast identification kit (bioMerieux, Lyon, France) and Bichro-Dubli Fumouze latex agglutination test (Fumouze Diagnostics, Levallois-Perret, France) were used for further identification of different Candida species. Patients' medical records were studied for information on their health habits and general health status, as well as tumor-related data. The patients' status regarding being alive and cancer free was checked at a follow-up point in December 2017. Descriptive statistics and cross tabulation were carried out, and the P value was set at .05. Results: Candida species were detected in 74% of the oral cancer patients' samples, with C. albicans being the most common species (84%). Other species identified were C. dubliniensis (8%), C. tropicalis (4%), C. glabrata (3%), C. parapsilosis (3%), C. sake (3%), C. krusei (1%), and C. guilliermondii (1%). After the follow-up period, 63% of the patients were alive and 86% of them were cancer free. Harboring Candida species in the saliva was not associated with any increase in the mortality rate. Conclusions: C. albicans was common in the oral cavity of the oral squamous cell carcinoma patients. However, in this patient population, we did not observe a statistically significant effect of the yeast on the mortality rate. (C) 2018 American Association of Oral and Maxillofacial Surgeons
  • Trüper, Henning (2018)
    The nine surviving letters by the Estonian philologist, theologian, philosopher and lyricist Uku Masing to his teacher, the Tübingen professor of Semitic philology Enno Littmann, for the most part written 1940-1943, offer insight into the question of what, until the mid-20th century, was meant by »world« in the context of world philology. The article contrasts Masing’s position with Erich Auerbach’s 1950s notion of »world philology«. By means of this comparison, the radical nature of Masing’s understanding of philological practice can be grasped. The article discusses the manner in which Auerbach and Masing apply notions from the philosophy of history to philological practice, which they understand as a universalization of exile and as testimony to the comprehensive vulnerability of scholarship respectively. This discussion is followed by an annotated edition of the letters.
  • Lehti, Lotta Maija Ilona; Haapanen, Lauri; Kääntä, Liisa (2018)
    There is a growing interest towards metatheoretical examination of linguistic research. This special issue contributes to this examination from the perspective of discourse studies. The issue consists of seven articles which present methods in different areas of discourse studies. The aim of this introductory article is firstly to define the notions of discourse and method. Secondly, through the presentation of the articles of the issue, we present a variety of methods pertaining to different stages of research. In particular, methods of data collection and classification, as well as of data analysis, are presented. We conclude the article with some remarks on the future avenues of the methodology of discourse studies.
  • Meng, Weihua; Shah, Kaanan P.; Pollack, Samuela; Toppila, Iiro; Hebert, Harry L.; McCarthy, Mark I.; Groop, Leif; Ahlqvist, Emma; Lyssenko, Valeriya; Agardh, Elisabet; Daniell, Mark; Kaidonis, Georgia; Craig, Jamie E.; Mitchell, Paul; Liew, Gerald; Kifley, Annette; Wang, Jie Jin; Christiansen, Mark W.; Jensen, Richard A.; Penman, Alan; Hancock, Heather A.; Chen, Ching J.; Correa, Adolfo; Kuo, Jane Z.; Li, Xiaohui; Chen, Yii-Der I.; Rotter, Jerome I.; Klein, Ronald; Klein, Barbara; Wong, Tien Y.; Morris, Andrew D.; Doney, Alexander S. F.; Colhoun, Helen M.; Price, Alkes L.; Burdon, Kathryn P.; Groop, Per-Henrik; Sandholm, Niina; Grassi, Michael A.; Sobrin, Lucia; Palmer, Colin N. A. (2018)
    Purpose Diabetic retinopathy is the most common eye complication in patients with diabetes. The purpose of this study is to identify genetic factors contributing to severe diabetic retinopathy. Methods Results A genome-wide association approach was applied. In the Genetics of Diabetes Audit and Research in Tayside Scotland (GoDARTS) datasets, cases of severe diabetic retinopathy were defined as type 2 diabetic patients who were ever graded as having severe background retinopathy (Level R3) or proliferative retinopathy (Level R4) in at least one eye according to the Scottish Diabetic Retinopathy Grading Scheme or who were once treated by laser photocoagulation. Controls were diabetic individuals whose longitudinal retinopathy screening records were either normal (Level R0) or only with mild background retinopathy (Level R1) in both eyes. Significant Single Nucleotide Polymorphisms (SNPs) were taken forward for meta-analysis using multiple Caucasian cohorts. Five hundred and sixty cases of type 2 diabetes with severe diabetic retinopathy and 4,106 controls were identified in the GoDARTS cohort. We revealed that rs3913535 in the NADPH Oxidase 4 (NOX4) gene reached a p value of 4.05 x 10(-9). Two nearby SNPs, rs10765219 and rs11018670 also showed promising p values (p values = 7.41 x 10(-8) and 1.23 x 10(-8), respectively). In the meta-analysis using multiple Caucasian cohorts (excluding GoDARTS), rs10765219 and rs11018670 showed associations for diabetic retinopathy (p = 0.003 and 0.007, respectively), while the p value of rs3913535 was not significant (p = 0.429). Conclusion This genome-wide association study of severe diabetic retinopathy suggests new evidence for the involvement of the NOX4 gene.
  • Lehti, Lotta Maija Ilona; Eronen-Valli, Maria (2018)
    Digital rhetoric is an emerging field, not yet very known among researchers and students in Finland. The term ‘digital rhetoric’ refers both to the production of persuasive digital texts and to their analysis. In this paper, we concentrate on the latter, the analysis, and we especially focus on the methods used in studies pertaining to digital rhetoric. Furthermore, instead of reviewing the variety of methods used in digital rhetoric research, we concentrate on how discourse analytic methods can be used in digital rhetoric research. We illustrate some of these uses through examples of studies on two rhetorical concepts in digital communication, namely ethos and argumentation. Our review shows that discourse analytic methods offer useful tools for the study of digital rhetoric.
  • Haapanen, A.; Thoren, H.; Apajalahti, S.; Suominen, A. L.; Snäll, J. (2018)
    Our aims were to document the occurrence of neurosensory disturbances of the infraorbital nerve six months after operation for an orbital blow-out fracture, and to find out whether dexamethasone facilitates neurosensory regeneration. Patients were randomly assigned to one of two groups: the study group was given a total of dexamethasone 30 mg, whereas the control group were given neither glucocorticoid nor placebo. Each patient's infraorbital neurosensory state was recorded preoperatively, immediately postoperatively, and six months later. A total of 18 patients were included, eight of whom had neurosensory disturbances six months after the initial trauma that was not affected by dexamethasone. Six of the seven patients who had a delay of seven days or more between trauma and operation had significantly prolonged disturbance at the 180-day clinical follow up compared with those in whom it was less than seven days (p = 0.005). Other possible predictors made no significant difference. Although dexamethasone did not facilitate sensory recovery, its benefits in the management of pain and reduction of swelling may justify its use in the management of facial trauma in selected patients. (C) 2018 The British Association of Oral and Maxillofacial Surgeons. Published by Elsevier Ltd. All rights reserved.
  • Haapasaari, Päivi Elisabet; Helle, Satu Inari; Lehikoinen, Annukka Maaria; Lappalainen, Jouni; Kuikka, Olli Sakari (2017)
    The Gulf of Finland of the Baltic Sea is a vulnerable sea area with high volumes of maritime traffic and difficult navigation conditions. The reactive international rules are not anymore regarded adequate in ensuring safety in this sea area. In this paper, a regional proactive risk governance approach is suggested for improving the effectiveness of safety policy formulation and management in the Gulf of Finland, based on the risk governance framework developed by the International Risk Governance Council (IRGC), the Formal Safety Assessment approach adopted by the International Maritime Safety Organisation (IMO), and best practices sought from other sectors and sea areas. The approach is based on a formal process of identifying, assessing and evaluating accident risks at the regional level, and adjusting policies or management practices before accidents occur. The proposed approach sees maritime safety as a holistic system, and manages it by combining a scientific risk assessment with stakeholder input to identify risks and risk control options, and to evaluate risks. A regional proactive approach can improve safety by focusing on actual risks, by designing tailor-made safety measures to control them, by enhancing a positive safety culture in the shipping industry, and by increasing trust among all involved.
  • Chattopadhyay, Subhayan; Zheng, Guoqiao; Hemminki, Otto; Försti, Asta; Sundquist, Kristina; Hemminki, Kari (2018)
    To assess etiological and clinical consequences of second primary cancers (SPCs) in prostate cancer (PC) patients, we followed newly diagnosed patients to identify men who were diagnosed with a SPC and recorded their causes of death. We used the Swedish Family-Cancer Database to assess relative risks (RRs) and causes of death in SPCs until the year 2015 in patients with a PC diagnosis between 2001 and 2010. Among a total of 4.26 million men, 76 614 were diagnosed with PC at the median age of 71 years. Among them, 8659 (11.3%) received a subsequent diagnosis of SPC after a median follow-up of 4 years. The most common SPCs were colorectal, skin, bladder, and lung cancers, melanoma, and non-Hodgkin lymphoma. The ranking was almost identical with first cancers among elderly men in Sweden. The RR for SPCs in prostate-specific antigen-detected PC was approximately equal to RR in other PC. Mortality patterns of PC patients were distinct depending on the presence or absence of SPC. Among patients with SPC, 47.8% died as a result of the corresponding SPC, followed by other causes (22.2%) and PC (18.1%). For patients without SPC, PC and non-neoplastic causes almost matched each other as the main causes of death (48.5% and 47.8%). The results suggest that SPCs appear autonomous from primary PC and reflect incidence and mortality of first cancers in general. SPC was the most common cause of death in patients with SPC; close to half of the patients died due to SPC. For improved survival in PC patients, prevention and early detection of SPCs would be important, and the present results suggest that risk factors for SPC in PC are the same as those for first cancer in general.
  • Wallenius, Tommi; Juvonen, Sara; Hansen, Petteri; Varjo, Janne (2018)
    Over recent decades we have witnessed a growing emphasis on educational quality assurance and evaluation (QAE) around the globe. The trend, not only to intensify evaluative measurements, but also to publish school-specific indicators, has become visible also in the Nordic countries. In Sweden, Denmark and Norway, the governments have launched web-portals, in which various indicators can be observed and compared at the school level. However in Finland, the data is published only at a general level. In this article we compare the discourses of educational experts on comprehensive school QAE policies and practices in four Nordic countries, Sweden, Denmark, Norway and Finland. Our aim is to clarify how the discursive practices reflect the current evaluation and publication policies and how the discourses construct the rationales of educational governance. We have approached our data (58 interviews) from the framework of discursive institutionalism, which sees both the underlying ideas and beliefs, and the discursive practices as the dynamic factors behind institutional change. We argue, that in all the Nordic countries these discursive practices take place in a balancing discursive triad between global competence, neo-liberal accountability pressures and the traditions of the egalitarian Nordic comprehensive school—however with varying country-specific rationales on school accountability and transparency.
  • The CMS collaboration; Sirunyan, A. M.; Eerola, P.; Kirschenmann, H.; Pekkanen, J.; Voutilainen, M.; Havukainen, J.; Heikkilä, J. K.; Järvinen, T.; Karimäki, V.; Kinnunen, R.; Lampén, T.; Lassila-Perini, K.; Laurila, S.; Lehti, S.; Lindén, T.; Luukka, P.; Mäenpää, T.; Siikonen, H.; Tuominen, E.; Tuominiemi, J.; Tuuva, T. (2018)
    A search has been performed for heavy resonances decaying to ZZ or ZW in 2l2q final states, with two charged leptons (l = e, mu) produced by the decay of a Z boson, and two quarks produced by the decay of a W or Z boson. The analysis is sensitive to resonances with masses in the range from 400 to 4500 GeV. Two categories are defined based on the merged or resolved reconstruction of the hadronically decaying vector boson, optimized for high- and low-mass resonances, respectively. The search is based on data collected during 2016 by the CMS experiment at the LHC in proton-proton collisions with a center-of-mass energy of root s = 13 TeV, corresponding to an integrated luminosity of 35.9 fb(-1). No excess is observed in the data above the standard model background expectation. Upper limits on the production cross section of heavy, narrow spin-1 and spin-2 resonances are derived as a function of the resonance mass, and exclusion limits on the production of W' bosons and bulk graviton particles are calculated in the framework of the heavy vector triplet model and warped extra dimensions, respectively.
  • Marttila, E.; Thoren, H.; Törnwall, J.; Viitikko, A.; Wilkman, T. (2018)
    The aim of this retrospective study was to analyse the incidence of complications and loss of flaps after primary reconstructions for oral cancer in 191 patients at our hospital over the five years 2005-2010. The patients' clinical and personal details, characteristics of the tumours, types of microvascular flap, complications, and outcomes were recorded. The soft tissue flaps used most often were the fasciocutaneous radial forearm free flap (RFFF) (n = 86, 45%) and the anterolateral thigh free flap (ALTFF) (n = 48, 25%) while the most commonly used osseous flap was the deep circumflex iliac artery flap (DCIA) (n = 25, 13%). There were postoperative complications that required intervention in a quarter of the patients, most often in the age group 41-50 years (p = 0.018). Older age was not associated with the development of complications. The overall survival of all free flaps was 181/191 (95%), and the only significant individual predictor of loss of a flap was reconstruction with a DCIA (p = 0.016), five of the 25 of which were lost. We conclude therefore that DCIA free flaps are associated with an increased risk of failure; the method of osseous reconstruction for maxillofacial reconstruction should be selected carefully; and carefully chosen older patients do not seem to be at increased risk of morbidity. (C) 2018 The British Association of Oral and Maxillofacial Surgeons. Published by Elsevier Ltd. All rights reserved.
  • The CMS collaboration; Sirunyan, A. M.; Eerola, P.; Kirschenmann, H.; Pekkanen, J.; Voutilainen, M.; Havukainen, J.; Heikkilä, J. K.; Järvinen, T.; Karimäki, V.; Kinnunen, R.; Lampén, T.; Lassila-Perini, K.; Laurila, S.; Lehti, S.; Lindén, T.; Luukka, P.; Mäenpää, T.; Siikonen, H.; Tuominen, E.; Tuominiemi, J.; Tuuva, T. (2018)
    A search has been performed for heavy resonances decaying to ZZ or ZW in 2l2q final states, with two charged leptons (l = e, mu) produced by the decay of a Z boson, and two quarks produced by the decay of a W or Z boson. The analysis is sensitive to resonances with masses in the range from 400 to 4500 GeV. Two categories are defined based on the merged or resolved reconstruction of the hadronically decaying vector boson, optimized for high- and low-mass resonances, respectively. The search is based on data collected during 2016 by the CMS experiment at the LHC in proton-proton collisions with a center-of-mass energy of root s = 13 TeV, corresponding to an integrated luminosity of 35.9 fb(-1). No excess is observed in the data above the standard model background expectation. Upper limits on the production cross section of heavy, narrow spin-1 and spin-2 resonances are derived as a function of the resonance mass, and exclusion limits on the production of W' bosons and bulk graviton particles are calculated in the framework of the heavy vector triplet model and warped extra dimensions, respectively.
  • The CMS collaboration; Sirunyan, A. M.; Eerola, P.; Kirschenmann, H.; Pekkanen, J.; Voutilainen, M.; Havukainen, J.; Heikkilä, J. K.; Järvinen, T.; Karimäki, V.; Kinnunen, R.; Lampén, T.; Lassila-Perini, K.; Laurila, S.; Lehti, S.; Lindén, T.; Luukka, P.; Mäenpää, T.; Siikonen, H.; Tuominen, E.; Tuominiemi, J.; Tuuva, T. (2018)
    A search has been performed for heavy resonances decaying to ZZ or ZW in 2l2q final states, with two charged leptons (l = e, mu) produced by the decay of a Z boson, and two quarks produced by the decay of a W or Z boson. The analysis is sensitive to resonances with masses in the range from 400 to 4500 GeV. Two categories are defined based on the merged or resolved reconstruction of the hadronically decaying vector boson, optimized for high- and low-mass resonances, respectively. The search is based on data collected during 2016 by the CMS experiment at the LHC in proton-proton collisions with a center-of-mass energy of root s = 13 TeV, corresponding to an integrated luminosity of 35.9 fb(-1). No excess is observed in the data above the standard model background expectation. Upper limits on the production cross section of heavy, narrow spin-1 and spin-2 resonances are derived as a function of the resonance mass, and exclusion limits on the production of W' bosons and bulk graviton particles are calculated in the framework of the heavy vector triplet model and warped extra dimensions, respectively.

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