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1. Prevalence of molar incisor hypomineralization among school children in Rome, Italy

Author: F. Nisii, M. Mazur, C. De Nuccio, C. Martucci, M. Spuntarelli, S. Labozzetta, A. Fratini, S. Sozzi, A. Maruotti, I. Vozza, V. Luzzi, M. Bossu, L. Ottolenghi, and A. Polimeni
Subjects: Medicine, Science
Abstract: Abstract Molar incisor hypomineralization (MIH) is a highly prevalent condition associated with increased caries experience, dental pain and treatment need. Aim of this study was to determine the prevalence and severity of MIH in a group of 7–8 years old primary school children living in Rome, Italy; and to assess the association with caries experience and possible perinatal risk factors. A survey has been conducted in the city of Rome, between April 2019 and March 2020 with a total of 49 primary schools and 176 2nd grade primary school classes and a total of 3611 children being involved. Of these, a subset of 346 children of 21 primary schools was selected for the epidemiological investigation. The prevalence of MIH was of 18.2%, with girls showing twice the probability of being subject to a mild-severe condition. Molar location was present in 71.4%, while location on both molar plus incisor was present in 28.6% of cases. The mean DMFT was 0.44 ± 0.78, “D” was 0.17 ± 0.58; the mean dmft was 1.7 ± 2.56, “d” was 1.32 ± 2.21. Female gender, caries experience, insufficient oral hygiene were risk factors. The incidence of MIH is increasing in the pediatric population. Knowledge about diagnosis and treatment options should be disseminated among dental professionals.
Published: 2022
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2. Genetic and environmental drivers of migratory behavior in western burrowing owls and implications for conservation and management

Author: Kelly Barr, Christen M. Bossu, Rachael A. Bay, Eric C. Anderson, Jim Belthoff, Lynne A. Trulio, Debra Chromczak, Colleen L. Wisinski, Thomas B. Smith, and Kristen C. Ruegg
Subjects: genetic connectivity, genomics, genotype–environment associations, inbreeding, migration, Evolution, QH359-425
Abstract: Abstract Migration is driven by a combination of environmental and genetic factors, but many questions remain about those drivers. Potential interactions between genetic and environmental variants associated with different migratory phenotypes are rarely the focus of study. We pair low coverage whole genome resequencing with a de novo genome assembly to examine population structure, inbreeding, and the environmental factors associated with genetic differentiation between migratory and resident breeding phenotypes in a species of conservation concern, the western burrowing owl (Athene cunicularia hypugaea). Our analyses reveal a dichotomy in gene flow depending on whether the population is resident or migratory, with the former being genetically structured and the latter exhibiting no signs of structure. Among resident populations, we observed significantly higher genetic differentiation, significant isolation‐by‐distance, and significantly elevated inbreeding. Among migratory breeding groups, on the other hand, we observed lower genetic differentiation, no isolation‐by‐distance, and substantially lower inbreeding. Using genotype–environment association analysis, we find significant evidence for relationships between migratory phenotypes (i.e., migrant versus resident) and environmental variation associated with cold temperatures during the winter and barren, open habitats. In the regions of the genome most differentiated between migrants and residents, we find significant enrichment for genes associated with the metabolism of fats. This may be linked to the increased pressure on migrants to process and store fats more efficiently in preparation for and during migration. Our results provide a significant contribution toward understanding the evolution of migratory behavior and vital insight into ongoing conservation and management efforts for the western burrowing owl.
Published: 2023
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3. Field research guided by citizen science and monitoring data reveal a novel alpine breeding distribution and vegetation associations of a declining, habitat-specialist songbird in Colorado, USA

Author: Brett L Walker, Aaron A. Yappert, Courtney L. Brennan, Christen M Bossu, and Andrew W Jones
Subjects: krummholz, migratory songbird, sagebrush, spizella breweri, spizella taverneri, subspecies, timberline sparrow, treeline, Ecology, QH540-549.5
Abstract: Documenting the breeding habitat and distribution of migratory songbirds is essential for accurately assessing their conservation status. The “sagebrush” subspecies of the Brewer’s Sparrow ( Spizella breweri breweri ) breeds in greatest abundance in sagebrush-dominated ( Artemisia spp.) shrublands of western North America, and the “timberline” subspecies ( S. b. taverneri ) breeds in shrubs or krummholz at or above the tree line in mountain ranges from Alaska to Montana. Brewer’s Sparrows have also been reported at alpine sites in summer in mountain ranges across the western United States, but their taxonomic affiliation and breeding status are unknown. We reviewed monitoring, citizen science, and specimen data for Colorado and identified 186 historical summer observations of Brewer’s Sparrows at 59 alpine sites (3334–4288 m elevation). We surveyed 39 alpine sites in June–July 2021–2023, detected a total of 100 adults (mostly singing males) at 26 alpine sites (3395–3754 m elevation), and confirmed breeding at three sites. Males occupied mixed-species willow patches 0.9–1.8 m tall, often intermixed with sparse conifer krummholz. We recorded songs and captured, measured, photographed, and collected blood and feather samples from birds at a subset of alpine sites and nearby, lower-elevation sagebrush sites in May–July 2021. Vegetation associations and timing of breeding at alpine sites closely matched those of taverneri , but short songs, external morphology, coloration, and genetics of alpine birds overlapped with sagebrush birds and more closely matched those of range-wide breweri . Our results indicate that western Colorado supports a widely-distributed, but poorly-documented, population of alpine breweri breeding in willows with sparse conifer krummholz within a relatively narrow elevation band at or above the tree line. Whether alpine birds are itinerant breeders that first nested in sagebrush remains unknown. Our results complicate interpretation of differences in breeding habitat and breeding phenology as supporting criteria for subspecific identification and taxonomic delineation in this species.
Published: 2024
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4. Genetic and ecological drivers of molt in a migratory bird

Author: Andrea Contina, Christen M. Bossu, Daniel Allen, Michael B. Wunder, and Kristen C. Ruegg
Subjects: Medicine, Science
Abstract: Abstract The ability of animals to sync the timing and location of molting (the replacement of hair, skin, exoskeletons or feathers) with peaks in resource availability has important implications for their ecology and evolution. In migratory birds, the timing and location of pre-migratory feather molting, a period when feathers are shed and replaced with newer, more aerodynamic feathers, can vary within and between species. While hypotheses to explain the evolution of intraspecific variation in the timing and location of molt have been proposed, little is known about the genetic basis of this trait or the specific environmental drivers that may result in natural selection for distinct molting phenotypes. Here we take advantage of intraspecific variation in the timing and location of molt in the iconic songbird, the Painted Bunting (Passerina ciris) to investigate the genetic and ecological drivers of distinct molting phenotypes. Specifically, we use genome-wide genetic sequencing in combination with stable isotope analysis to determine population genetic structure and molting phenotype across thirteen breeding sites. We then use genome-wide association analysis (GWAS) to identify a suite of genes associated with molting and pair this with gene-environment association analysis (GEA) to investigate potential environmental drivers of genetic variation in this trait. Associations between genetic variation in molt-linked genes and the environment are further tested via targeted SNP genotyping in 25 additional breeding populations across the range. Together, our integrative analysis suggests that molting is in part regulated by genes linked to feather development and structure (GLI2 and CSPG4) and that genetic variation in these genes is associated with seasonal variation in precipitation and aridity. Overall, this work provides important insights into the genetic basis and potential selective forces behind phenotypic variation in what is arguably one of the most important fitness-linked traits in a migratory bird.
Published: 2023
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5. Genotype–environment associations across spatial scales reveal the importance of putative adaptive genetic variation in divergence

Author: Allison H. Alvarado, Christen M. Bossu, Ryan J. Harrigan, Rachael A. Bay, Allison R. P. Nelson, Thomas B. Smith, and Kristen C. Ruegg
Subjects: Catharus guttatus, cline analysis, genoscape map, gradient forest, hybrid zone, landscape genomics, Evolution, QH359-425
Abstract: Abstract Identifying areas of high evolutionary potential is a judicious strategy for developing conservation priorities in the face of environmental change. For wide‐ranging species occupying heterogeneous environments, the evolutionary forces that shape distinct populations can vary spatially. Here, we investigate patterns of genomic variation and genotype–environment associations in the hermit thrush (Catharus guttatus), a North American songbird, at broad (across the breeding range) and narrow spatial scales (at a hybrid zone). We begin by building a genoscape or map of genetic variation across the breeding range and find five distinct genetic clusters within the species, with the greatest variation occurring in the western portion of the range. Genotype–environment association analyses indicate higher allelic turnover in the west than in the east, with measures of temperature surfacing as key predictors of putative adaptive genomic variation rangewide. Since broad patterns detected across a species' range represent the aggregate of many locally adapted populations, we investigate whether our broadscale analysis is consistent with a finer scale analysis. We find that top rangewide temperature‐associated loci vary in their clinal patterns (e.g., steep clines vs. fixed allele frequencies) across a hybrid zone in British Columbia, suggesting that the environmental predictors and the associated candidate loci identified in the rangewide analysis are of variable importance in this particular region. However, two candidate loci exhibit strong concordance with the temperature gradient in British Columbia, suggesting a potential role for temperature‐related barriers to gene flow and/or temperature‐driven ecological selection in maintaining putative local adaptation. This study demonstrates how patterns identified at the broad (macrogeographic) scale can be validated by investigating genotype–environment correlations at the local (microgeographic) scale. Furthermore, our results highlight the importance of considering the spatial distribution of putative adaptive variation when assessing population‐level sensitivity to climate change and other stressors.
Published: 2022
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6. Winter connectivity and leapfrog migration in a migratory passerine

Author: Rafael Rueda‐Hernández, Christen M. Bossu, Thomas B. Smith, Andrea Contina, Ricardo Canales del Castillo, Kristen Ruegg, and Blanca E. Hernández‐Baños
Subjects: ecology, full‐cycle, genoscape, leapfrog migration, Passerina ciris, stopover, Ecology, QH540-549.5
Abstract: Abstract Technological advances in migratory tracking tools have revealed a remarkable diversity in migratory patterns. One such pattern is leapfrog migration, where individuals that breed further north migrate to locations further south. Here, we analyzed migration patterns in the Painted Bunting (Passerina ciris) using a genetic‐based approach. We started by mapping patterns of genetic variation across geographic space (called a genoscape) using 386 individuals from 25 populations across the breeding range. We then genotyped an additional 230 samples from 31 migration stopover locations and 178 samples from 16 wintering locations to map patterns of migratory connectivity. Our analyses of genetic variation across the breeding range show the existence of four genetically distinct groups within the species: Eastern, Southwestern, Louisiana, and Central groups. Subsequent assignment of migrating and wintering birds to genetic groups illustrated that birds from the Central group migrated during the fall via western Mexico or southern Texas, spent the winter from northeastern Mexico to Panama, and migrated north via the Gulf Coast of Mexico. While Louisiana birds overlapped with Central birds on their spring migratory routes along the Gulf Coast, we found that Louisiana birds had a more restricted wintering distribution in the Yucatan Peninsula and Central America. Further estimation of the straight‐line distance from the predicted breeding location to the wintering location revealed that individuals sampled at lower winter latitudes traveled to greater distances (i.e., the predicted breeding area was further north; p > .001), confirming that these species exhibit a leapfrog migration pattern. Overall, these results demonstrate the utility of a genoscape‐based approach for identifying range‐wide patterns of migratory connectivity such as leapfrog migration with a high degree of clarity.
Published: 2023
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7. Genetic identification of avian samples recovered from solar energy installations.

Author: Cristian Gruppi, Peter Sanzenbacher, Karina Balekjian, Rachel Hagar, Sierra Hagen, Christine Rayne, Teia M Schweizer, Christen M Bossu, Daniel Cooper, Thomas Dietsch, Thomas B Smith, Kristen Ruegg, and Ryan J Harrigan
Subjects: Medicine, Science
Abstract: Renewable energy production and development will drastically affect how we meet global energy demands, while simultaneously reducing the impact of climate change. Although the possible effects of renewable energy production (mainly from solar- and wind-energy facilities) on wildlife have been explored, knowledge gaps still exist, and collecting data from wildlife remains (when negative interactions occur) at energy installations can act as a first step regarding the study of species and communities interacting with facilities. In the case of avian species, samples can be collected relatively easily (as compared to other sampling methods), but may only be able to be identified when morphological characteristics are diagnostic for a species. Therefore, many samples that appear as partial remains, or "feather spots"-known to be of avian origin but not readily assignable to species via morphology-may remain unidentified, reducing the efficiency of sample collection and the accuracy of patterns observed. To obtain data from these samples and ensure their identification and inclusion in subsequent analyses, we applied, for the first time, a DNA barcoding approach that uses mitochondrial genetic data to identify unknown avian samples collected at solar facilities to species. We also verified and compared identifications obtained by our genetic method to traditional morphological identifications using a blind test, and discuss discrepancies observed. Our results suggest that this genetic tool can be used to verify, correct, and supplement identifications made in the field and can produce data that allow accurate comparisons of avian interactions across facilities, locations, or technology types. We recommend implementing this genetic approach to ensure that unknown samples collected are efficiently identified and contribute to a better understanding of wildlife impacts at renewable energy projects.
Published: 2023
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8. Genetic and ecological drivers of molt in a migratory bird

Author: Andrea Contina, Christen M. Bossu, Daniel Allen, Michael B. Wunder, and Kristen C. Ruegg
Subjects: Multidisciplinary
Abstract: The ability of animals to sync the timing and location of molting (the replacement of hair, skin, exoskeletons or feathers) with peaks in resource availability has important implications for their ecology and evolution. In migratory birds, the timing and location of pre-migratory feather molting, a period when feathers are shed and replaced with newer, more aerodynamic feathers, can vary within and between species. While hypotheses to explain the evolution of intraspecific variation in the timing and location of molt have been proposed, little is known about the genetic basis of this trait or the specific environmental drivers that may result in natural selection for distinct molting phenotypes. Here we take advantage of intraspecific variation in the timing and location of molt in the iconic songbird, the Painted Bunting (Passerina ciris) to investigate the genetic and ecological drivers of distinct molting phenotypes. Specifically, we use genome-wide genetic sequencing in combination with stable isotope analysis to determine population genetic structure and molting phenotype across thirteen breeding sites. We then use genome-wide association analysis (GWAS) to identify a suite of genes associated with molting and pair this with gene-environment association analysis (GEA) to investigate potential environmental drivers of genetic variation in this trait. Associations between genetic variation in molt-linked genes and the environment are further tested via targeted SNP genotyping in 25 additional breeding populations across the range. Together, our integrative analysis suggests that molting is in part regulated by genes linked to feather development and structure (GLI2 and CSPG4) and that genetic variation in these genes is associated with seasonal variation in precipitation and aridity. Overall, this work provides important insights into the genetic basis and potential selective forces behind phenotypic variation in what is arguably one of the most important fitness-linked traits in a migratory bird.
Published: 2022

9. TITULADOR AUTOMÁTICO EM FLUXO-BATELADA UTILIZANDO UM HARDWARE DE CÓDIGO FONTE ABERTO ARDUINO

Author: Márcio Santos Soares, Alex A. Silva, C. M. Bossu, Sidney Xavier dos Santos, Fernanda S. C. Soares, Rúbia E. C. R. Rodrigues, and Gabriel O. Uebe
Subjects: potentiometric titration, Chemistry, flow-batch, Arduino, General Chemistry, QD1-999
Abstract: AUTOMATIC TITROMETRIC METHOD IN FLOW-BATCH CONTROLLED BY AN ARDUINO OPEN SOURCE HARDWARE. This work describes the development of an automatic titrometric method in flow-batch with potentiometric detection using alternative and easily accessible materials. Arduino board and its modules, solenoid valves to control the flow rate, peristaltic pump to propel and suction fluids and tubes of inert material to connect the different parts of the Flow-Batch Analyser (FBA) were used. The use of solenoid valves controlled by microcontrollers proved to be efficient for controlling the flow in FBA systems, the correlations of their flow rates as a function of time showed good linearity with correlation coefficients (r) 0.9994 and 0.9997 for the valve 1 and valve 2, respectively, allowing correct addition of pre-established volumes. Accuracy was verified by comparing the results of the proposed method with the classic potentiometric titration with statistically evaluated by Student’s t-test in NaOH with HCl and vinegar with NaOH titrations. Results confirmed the efficiency to use Arduino board and its modules and automatic titrometric method in flow-batch developed in this work allow the implementation of practical disciplines, such as potentiometric titration and flow analysis system in undergraduate courses, making these instruments more accessible, especially for the chemistry students.
Published: 2021

10. Leveraging genomics to understand threats to migratory birds

Author: Alec R. Lindsay, David C. Evers, Joseph D. Kaplan, Kristen C. Ruegg, Michael D. Sorenson, Christen M. Bossu, Jeffrey M. DaCosta, Thomas B. Smith, Brenda Larison, and James D. Paruk
Subjects: 0106 biological sciences, 0301 basic medicine, Evolution, Range (biology), Population, Climate change, RAD sequencing, Biology, 010603 evolutionary biology, 01 natural sciences, Medicinal and Biomolecular Chemistry, 03 medical and health sciences, Common Loon, QH359-425, Genetics, wildlife management, Wildlife management, education, Ecology, Evolution, Behavior and Systematics, Evolutionary Biology, disease, education.field_of_study, botulism, Ecology, waterbirds, Outbreak, Original Articles, Annual cycle, biology.organism_classification, Breed, Gavia immer, 030104 developmental biology, conservation genomics, Common loon, Original Article, General Agricultural and Biological Sciences
Abstract: Understanding how risk factors affect populations across their annual cycle is a major challenge for conserving migratory birds. For example, disease outbreaks may happen on the breeding grounds, the wintering grounds, or during migration and are expected to accelerate under climate change. The ability to identify the geographic origins of impacted individuals, especially outside of breeding areas, might make it possible to predict demographic trends and inform conservation decision‐making. However, such an effort is made more challenging by the degraded state of carcasses and resulting low quality of DNA available. Here, we describe a rapid and low‐cost approach for identifying the origins of birds sampled across their annual cycle that is robust even when DNA quality is poor. We illustrate the approach in the common loon (Gavia immer), an iconic migratory aquatic bird that is under increasing threat on both its breeding and wintering areas. Using 300 samples collected from across the breeding range, we develop a panel of 158 single‐nucleotide polymorphisms (SNP) loci with divergent allele frequencies across six genetic subpopulations. We use this SNP panel to identify the breeding grounds for 142 live nonbreeding individuals and carcasses. For example, genetic assignment of loons sampled during botulism outbreaks in parts of the Great Lakes provides evidence for the significant role the lakes play as migratory stopover areas for loons that breed across wide swaths of Canada, and highlights the vulnerability of a large segment of the breeding population to botulism outbreaks that are occurring in the Great Lakes with increasing frequency. Our results illustrate that the use of SNP panels to identify breeding origins of carcasses collected during the nonbreeding season can improve our understanding of the population‐specific impacts of mortality from disease and anthropogenic stressors, ultimately allowing more effective management.
Published: 2021

11. Zinc fractionation in cow, goat, sheep and soybean milk samples using gel-electrophoresis and determination by electrothermal atomic absorption spectrometry (ETAAS)

Author: Márcia Cristina de Sena Oliveira, Pedro Vitoriano de Oliveira, Rodrigo Giglioti, Ana Rita A. Nogueira, C. M. Bossu, CARLA MAÍRA BOSSU, UFSCAR, RODRIGO GIGLIOTI, IZ, MARCIA CRISTINA DE SENA OLIVEIRA, CPPSE, PEDRO VITORIANO DE OLIVEIRA, USP, and ANA RITA DE ARAUJO NOGUEIRA, CPPSE.
Subjects: Gel electrophoresis, Chromatography, Microwave oven, Proteins, food and beverages, chemistry.chemical_element, Fractionation, Atomic spectroscopy, Zinc, law.invention, lcsh:Chemistry, Milk, Certified reference materials, lcsh:QD1-999, chemistry, law, Atomic absorption spectroscopy, Sheep milk
Abstract: A screening method for zinc levels in different milk samples (raw cow, raw sheep, UHT cow, UHT goat and soybean milk base) was performed to establish the Zn levels' differences in protein samples. The samples were digested in a cavity microwave oven and the total Zn levels in the extracts were determined by flame absorption atomic spectrometry (FAAS). The protein separation was performed by urea polyacrylamide gel electrophoresis (UREA-PAGE). Protein bands were digested in the cavity microwave oven and Zn-protein analysis was further conducted by electrothermal atomic absorption spectrometry (ETAAS). The results showed that Zn is mainly bound to 32 kDa (b-casein) protein (17.0 ± 2.0%) in UHT cow and 24 kDa (a-casein) protein (9.0 ± 0.6%) in raw sheep milk. This method provided quantitative information regarding Zn species present in the protein fractions of the milk samples. The accuracy was evaluated using certified reference material (whole milk powder, NIST 8435) with statistically equivalent concentrations (Student's t-test) for total Zn and by addition and recovery experiments applied to measure Zn-protein. The recovered values were in the 92-110% range. Made available in DSpace on 2021-07-01T19:00:51Z (GMT). No. of bitstreams: 1 ZincFractionationCow.pdf: 300396 bytes, checksum: 9c0d5f6e765b2c9996705ff2bb985a87 (MD5) Previous issue date: 2021
Published: 2021

12. Clock-linked genes underlie seasonal migratory timing in a diurnal raptor

Author: Christen M. Bossu, Julie A. Heath, Gregory S. Kaltenecker, Barbara Helm, and Kristen C. Ruegg
Subjects: Polymorphism, Genetic, Raptors, General Immunology and Microbiology, Animals, Humans, Animal Migration, Seasons, General Medicine, General Agricultural and Biological Sciences, Falconiformes, General Biochemistry, Genetics and Molecular Biology, General Environmental Science
Abstract: Seasonal migration is a dynamic natural phenomenon that allows organisms to exploit favourable habitats across the annual cycle. While the morphological, physiological and behavioural changes associated with migratory behaviour are well characterized, the genetic basis of migration and its link to endogenous biological time-keeping pathways are poorly understood. Historically, genome-wide research has focused on genes of large effect, whereas many genes of small effect may work together to regulate complex traits like migratory behaviour. Here, we explicitly relax stringent outlier detection thresholds and, as a result, discover how multiple biological time-keeping genes are important to migratory timing in an iconic raptor species, the American kestrel ( Falco sparverius ). To validate the role of candidate loci in migratory timing, we genotyped kestrels captured across autumn migration and found significant associations between migratory timing and genetic variation in metabolic and light-input pathway genes that modulate biological clocks ( top1, phlpp1, cpne4 and peak1) . Further, we demonstrate that migrating individuals originated from a single panmictic source population, suggesting the existence of distinct early and late migratory genotypes (i.e. chronotypes). Overall, our results provide empirical support for the existence of a within-population-level polymorphism in genes underlying migratory timing in a diurnally migrating raptor.
Published: 2022

13. Extra‐pair paternity as a strategy to reduce the costs of heterospecific reproduction? Insights from the crow hybrid zone

Author: Jochen B. W. Wolf, Christen M. Bossu, and Ulrich Knief
Subjects: Male, 0106 biological sciences, 0301 basic medicine, Post hoc, Offspring, media_common.quotation_subject, Zoology, Paternity, Biology, Zoologi, 010603 evolutionary biology, 01 natural sciences, Evolutionsbiologi, Sexual Behavior, Animal, 03 medical and health sciences, extra-pair paternity, Hybrid zone, Animals, Carrion, reproductive character displacement, Mating, hybridization, Ecology, Evolution, Behavior and Systematics, media_common, Crows, reinforcement, Evolutionary Biology, Europe, 030104 developmental biology, Plumage, Hybridization, Genetic, Female, Reproduction, Purebred
Abstract: Within hybrid zones of socially monogamous species, the number of mating opportunities with a conspecific can be limited. As a consequence, individuals may mate with a heterospecific (social) partner despite possible fitness costs to their hybrid offspring. Extra‐pair copulations with a conspecific may thus arise as a possible post hoc strategy to reduce the costs of hybridization. We here assessed the rate of extra‐pair paternity in the hybrid zone between all‐black carrion crows (Corvus (corone) corone ) and grey hooded crows (C. (c.) cornix ) and tested whether extra‐pair paternity (EPP) was more likely in broods where parents differed in plumage colour. The proportion of broods with at least one extra‐pair offspring and the proportion of extra‐pair offspring were low overall (6.98% and 2.90%, respectively) with no evidence of hybrid broods having higher EPP rates than purebred nests.
Published: 2020

14. Epistatic mutations under divergent selection govern phenotypic variation in the crow hybrid zone

Author: Bengt Hansson, Christen M. Bossu, Matthias H. Weissensteiner, Nagarjun Vijay, Ulrich Knief, Jelmer W. Poelstra, Nicola Saino, and Jochen B. W. Wolf
Subjects: Gene Flow, 0106 biological sciences, 0301 basic medicine, Population, Introgression, Biology, 010603 evolutionary biology, 01 natural sciences, Article, Gene flow, 03 medical and health sciences, Hybrid zone, Genetic variation, Animals, education, Ecology, Evolution, Behavior and Systematics, Selection (genetic algorithm), Crows, education.field_of_study, Ecology, Genetic Variation, Epistasis, Genetic, Reproductive isolation, Phenotype, 030104 developmental biology, Biological Variation, Population, Evolutionary biology, Mutation, Hybridization, Genetic, Epistasis
Abstract: The evolution of genetic barriers opposing interspecific gene flow is key to the origin of new species. Drawing from information on over 400 admixed genomes sourced from replicate transects across the European hybrid zone between all-black carrion crows and grey-coated hooded crows, we decipher the interplay between phenotypic divergence and selection at the molecular level. Over 68% of plumage variation was explained by epistasis between the gene NDP and a ~2.8-megabase region on chromosome 18 with suppressed recombination. Both pigmentation loci showed evidence for divergent selection resisting introgression. This study reveals how few, large-effect loci can govern prezygotic isolation and shield phenotypic divergence from gene flow.
Published: 2019

15. The American Kestrel (Falco sparverius) genoscape: implications for monitoring, management, and subspecies boundaries

Author: Christopher J. W. McClure, Russell D. Dawson, Bill Ralph, Clint W. Boal, Thomas B. Smith, M. David Oleyar, Christen M. Bossu, Jean-François Therrien, Michaela Brinkmeyer, Amber Eschenbauch, Rachael A. Bay, Lance Morrow, Rich Van Buskirk, Jill Morrow, Karl E. Miller, Kristen C. Ruegg, Eric C. Anderson, Sarah E. Schulwitz, Julie A. Heath, and Ted Swem
Subjects: 0106 biological sciences, 0301 basic medicine, biology, Computer science, Zoology, Kestrel, 15. Life on land, Subspecies, biology.organism_classification, 010603 evolutionary biology, 01 natural sciences, 03 medical and health sciences, 030104 developmental biology, Animal Science and Zoology, 14. Life underwater, Ecology, Evolution, Behavior and Systematics
Abstract: Identifying population genetic structure is useful for inferring evolutionary process and comparing the resulting structure with subspecies boundaries can aid in species management. The American Kestrel (Falco sparverius) is a widespread and highly diverse species with 17 total subspecies, only 2 of which are found north of U.S./Mexico border (F. s. paulus is restricted to southeastern United States, while F. s. sparverius breeds across the remainder of the U.S. and Canadian distribution). In many parts of their U.S. and Canadian range, American Kestrels have been declining, but it has been difficult to interpret demographic trends without a clearer understanding of gene flow among populations. Here we sequence the first American Kestrel genome and scan the genome of 197 individuals from 12 sampling locations across the United States and Canada in order to identify population structure. To validate signatures of population structure and fill in sampling gaps across the U.S. and Canadian range, we screened 192 outlier loci in an additional 376 samples from 34 sampling locations. Overall, our analyses support the existence of 5 genetically distinct populations of American Kestrels—eastern, western, Texas, Florida, and Alaska. Interestingly, we found that while our genome-wide genetic data support the existence of previously described subspecies boundaries in the United States and Canada, genetic differences across the sampled range correlate more with putative migratory phenotypes (resident, long-distance, and short-distance migrants) rather than a priori described subspecies boundaries per se. Based on our results, we suggest the resulting 5 genetically distinct populations serve as the foundation for American Kestrel conservation and management in the face of future threats.
Published: 2021

16. Author response for 'Extra‐pair paternity as a strategy to reduce the costs of heterospecific reproduction? Insights from the crow hybrid zone'

Author: Jochen B. W. Wolf, Ulrich Knief, and Christen M. Bossu
Subjects: Hybrid zone, Evolutionary biology, Reproduction (economics), Biology
Published: 2020

17. Evolution of heterogeneous genome differentiation across multiple contact zones in a crow species complex

Author: Matthias H. Weissensteiner, Nagarjun Vijay, Jochen B. W. Wolf, Christen M. Bossu, Alexander Suh, Jelmer W. Poelstra, and Alexey P. Kryukov
Subjects: Gene Flow, Male, 0301 basic medicine, Species complex, Reproductive Isolation, Genetic Speciation, Science, Population Dynamics, Population, General Physics and Astronomy, Biology, Diversification (marketing strategy), Polymorphism, Single Nucleotide, Genome, Article, General Biochemistry, Genetics and Molecular Biology, Divergence, Evolutionsbiologi, 03 medical and health sciences, Genetics, Animals, Genetik, skin and connective tissue diseases, education, Crows, education.field_of_study, Evolutionary Biology, Multidisciplinary, Geography, Pigmentation, Nucleic Acid Hybridization, General Chemistry, Phenotype, 030104 developmental biology, Evolutionary biology, Hybridization, Genetic, Female, sense organs
Abstract: Uncovering the genetic basis of species diversification is a central goal in evolutionary biology. Yet, the link between the accumulation of genomic changes during population divergence and the evolutionary forces promoting reproductive isolation is poorly understood. Here, we analysed 124 genomes of crow populations with various degrees of genome-wide differentiation, with parallelism of a sexually selected plumage phenotype, and ongoing hybridization. Overall, heterogeneity in genetic differentiation along the genome was best explained by linked selection exposed on a shared genome architecture. Superimposed on this common background, we identified genomic regions with signatures of selection specific to independent phenotypic contact zones. Candidate pigmentation genes with evidence for divergent selection were only partly shared, suggesting context-dependent selection on a multigenic trait architecture and parallelism by pathway rather than by repeated single-gene effects. This study provides insight into how various forms of selection shape genome-wide patterns of genomic differentiation as populations diverge., Genetic changes accumulate as populations diverge and new species emerge. Here, Vijay et al. resequence the genomes of crow populations at various stages of genetic differentiation, and shed light on the evolutionary processes acting during the origin and hybridization of crows in Europe and Asia.
Published: 2016

18. PERISTALTIC PUMP AND DETECTION SYSTEM CONTROLLED BY AN ARDUINO OPEN SOURCE HARDWARE DEVELOPED AND DESIGNED FOR APPLICATION IN A FLOW ANALYSIS SYSTEM

Author: Alan Lima Vieira, Marcus V. Sant'Anna, Carla M. Bossu, Rejane Nascentes, Fernanda S. C. Soares, and Márcio Santos Soares
Subjects: lcsh:Chemistry, Physics, lcsh:QD1-999, peristaltic pump, flow analysis, Arduino, General Chemistry, Humanities
Abstract: This work describes the development of a peristaltic pump and a photometric detector, using “Arduino” and alternative and low-cost materials for flow analysis system. The analytical calibration curve of the acid-red-283 using the proposed system presents 0.9984 and 3.9% as the coefficients of determination and variation, and 1.1 and 3.8 mg L-1 as limits of detection and quantification, respectively. Three prepared samples of the acid-red-283 (25, 30 and 35 mg L-1) showed recovery between 99 to 104%. For construction of the peristaltic pump and the photometer using Light Emitting Diodes (LED), light-dependent resistor (LDR) were spent less than 10% of the cost was spent on a commercial system employing a peristaltic pump and a spectrophotometer. Furthermore, the peristaltic pump and the photometer developed in this work allow the implementation of practical disciplines, such as molecular absorption spectrophotometry and flow analysis system in undergraduate courses, making these instruments more accessible, especially for the chemistry students.
Published: 2018

19. Ecological constraint and the evolution of sexual dichromatism in darters

Author: Christen M. Bossu and Thomas J. Near
Subjects: Natural selection, biology, Ecological selection, Dichromatism, Ecology, biology.organism_classification, Darter, Predation, Evolutionary biology, Sexual selection, Crypsis, Genetics, General Agricultural and Biological Sciences, Ecology, Evolution, Behavior and Systematics, Selection (genetic algorithm)
Abstract: It is not known how environmental pressures and sexual selection interact to influence the evolution of extravagant male traits. Sexual and natural selection are often viewed as antagonistic forces shaping the evolution of visual signals, where conspicuousness is favored by sexual selection and crypsis is favored by natural selection. Although typically investigated independently, the interaction between natural and sexual selection remains poorly understood. Here, we investigate whether sexual dichromatism evolves stochastically, independent from, or in concert with habitat use in darters, a species-rich lineage of North American freshwater fish. We find the evolution of sexual dichromatism is coupled to habitat use in darter species. Comparative analyses reveal that mid-water darter lineages exhibit a narrow distribution of dichromatism trait space surrounding a low optimum, suggesting a constraint imposed on the evolution of dichromatism, potentially through predator-mediated selection. Alternatively, the transition to benthic habitats coincides with greater variability in the levels of dichromatism that surround a higher optimum, likely due to relaxation of the predator-mediated selection and heterogeneous microhabitat dependent selection regimes. These results suggest a complex interaction of sexual selection with potentially two mechanisms of natural selection, predation and sensory drive, that influence the evolution of diverse male nuptial coloration in darters.
Published: 2015

20. Charged-particle multiplicities in proton-proton collisions at root s=0.9 to 8 TeV

Author: Adam, J. Adamova, D. Aggarwal, M. M. Rinella, G. Aglieri and Agnello, M. Agrawal, N. Ahammed, Z. Ahmed, I. Ahn, S. U. and Aiola, S. Akindinov, A. Alam, S. N. Aleksandrov, D. and Alessandro, B. Alexandre, D. Alfaro Molina, R. Alici, A. and Alkin, A. Almaraz, J. R. M. Alme, J. Alt, T. Altinpinar, S. Altsybeev, I. Alves Garcia Prado, C. Andrei, C. and Andronic, A. Anguelov, V. Anielski, J. Anticic, T. and Antinori, F. Antonioli, P. Aphecetche, L. Appelshauser, H. and Arcelli, S. Arnaldi, R. Arnold, O. W. Arsene, I. C. and Arslandok, M. Audurier, B. Augustinus, A. Averbeck, R. and Azmi, M. D. Badala, A. Baek, Y. W. Bagnasco, S. and Bailhache, R. Bala, R. Baldisseri, A. Baral, R. C. and Barbano, A. M. Barbera, R. Barile, F. Barnafoldi, G. G. and Barnby, L. S. Barret, V. Bartalini, P. Barth, K. Bartke, J. Bartsch, E. Basile, M. Bastid, N. Basu, S. and Bathen, B. Batigne, G. Camejo, A. Batista Batyunya, B. and Batzing, P. C. Bearden, I. G. Beck, H. Bedda, C. Behera, N. K. Belikov, I. Bellini, F. Martinez, H. Bello and Bellwied, R. Belmont, R. Belmont-Moreno, E. Belyaev, V. and Bencedi, G. Beole, S. Berceanu, I. Bercuci, A. and Berdnikov, Y. Berenyi, D. Bertens, R. A. Berzano, D. and Betev, L. Bhasin, A. Bhat, I. R. Bhati, A. K. and Bhattacharjee, B. Bhom, J. Bianchi, L. Bianchi, N. and Bianchin, C. Bielcik, J. Bielcikova, J. Bilandzic, A. and Biswas, R. Biswas, S. Bjelogrlic, S. Blair, J. T. Blau, D. Blume, C. Bock, F. Bogdanov, A. Boggild, H. and Boldizsar, L. Bombara, M. Book, J. Borel, H. Borissov, A. Borri, M. Bossu, F. Botta, E. Boettger, S. and Bourjau, C. Braun-Munzinger, P. Bregant, M. Breitner, T. and Broker, T. A. Browning, T. A. Broz, M. Brucken, E. J. and Bruna, E. Bruno, G. E. Budnikov, D. Buesching, H. and Bufalino, S. Buncic, P. Busch, O. Buthelezi, Z. Butt, J. B. Buxton, J. T. Caffarri, D. Cai, X. Caines, H. and Diaz, L. Calero Caliva, A. Calvo Villar, E. Camerini, P. and Carena, F. Carena, W. Carnesecchi, F. Castellanos, J. Castillo Castro, A. J. Casula, E. A. R. Ceballos Sanchez, C. and Cepila, J. Cerello, P. Cerkala, J. Chang, B. and Chapeland, S. Chartier, M. Charvet, J. L. Chattopadhyay, S. and Chattopadhyay, S. Chelnokov, V. Cherney, M. Cheshkov, C. and Cheynis, B. Barroso, V. Chibante Chinellato, D. D. Cho, S. Chochula, P. Choi, K. Chojnacki, M. Choudhury, S. and Christakoglou, P. Christensen, C. H. Christiansen, P. Chujo, T. Chung, S. U. Cicalo, C. Cifarelli, L. Cindolo, F. and Cleymans, J. Colamaria, F. Colella, D. Collu, A. and Colocci, M. Balbastre, G. Conesa del Valle, Z. Conesa and Connors, M. E. Contreras, J. G. Cormier, T. M. Morales, Y. Corrales Cortes Maldonado, I. Cortese, P. Cosentino, M. R. and Costa, F. Crochet, P. Albino, R. Cruz Cuautle, E. and Cunqueiro, L. Dahms, T. Dainese, A. Danu, A. Das, D. and Das, I. Das, S. Dash, A. Dash, S. De, S. De Caro, A. and de Cataldo, G. de Conti, C. de Cuveland, J. De Falco, A. and De Gruttola, D. De Marco, N. De Pasquale, S. Deisting, A. Deloff, A. Denes, E. Deplano, C. Dhankher, P. Di Bari, D. Di Mauro, A. Di Nezza, P. Diaz Corchero, M. A. and Dietel, T. Dillenseger, P. Divia, R. Djuvsland, O. and Dobrin, A. Domenicis Gimenez, D. Donigus, B. Dordic, O. and Drozhzhova, T. Dubey, A. K. Dubla, A. Ducroux, L. and Dupieux, P. Ehlers, R. J. Elia, D. Engel, H. Epple, E. and Erazmus, B. Erdemir, I. Erhardt, F. Espagnon, B. and Estienne, M. Esumi, S. Eum, J. Evans, D. Evdokimov, S. and Eyyubova, G. Fabbietti, L. Fabris, D. Faivre, J. and Fantoni, A. Fasel, M. Feldkamp, L. Feliciello, A. and Feofilov, G. Ferencei, J. Fernandez Tellez, A. Ferreiro, E. G. Ferretti, A. Festanti, A. Feuillard, V. J. G. Figiel, J. Figueredo, M. A. S. Filchagin, S. Finogeev, D. and Fionda, F. M. Fiore, E. M. Fleck, M. G. Floris, M. and Foertsch, S. Foka, P. Fokin, S. Fragiacomo, E. and Francescon, A. Frankenfeld, U. Fuchs, U. Furget, C. and Furs, A. Girard, M. Fusco Gaardhoje, J. J. Gagliardi, M. and Gago, A. M. Gallio, M. Gangadharan, D. R. Ganoti, P. and Gao, C. Garabatos, C. Garcia-Solis, E. Gargiulo, C. and Gasik, P. Gauger, E. F. Germain, M. Gheata, A. Gheata, M. Ghosh, P. Ghosh, S. K. Gianotti, P. Giubellino, P. and Giubilato, P. Gladysz-Dziadus, E. Glaessel, P. Gomez Coral, D. M. Ramirez, A. Gomez Gonzalez, V. Gonzalez-Zamora, P. Gorbunov, S. Goerlich, L. Gotovac, S. Grabski, V. and Grachov, O. A. Graczykowski, L. K. Graham, K. L. Grelli, A. and Grigoras, A. Grigoras, C. Grigoriev, V. Grigoryan, A. and Grigoryan, S. Grinyov, B. Grion, N. Gronefeld, J. M. and Grosse-Oetringhaus, J. F. Grossiord, J. -Y. Grosso, R. and Guber, F. Guernane, R. Guerzoni, B. Gulbrandsen, K. and Gunji, T. Gupta, A. Gupta, R. Haake, R. Haaland, O. and Hadjidakis, C. Haiduc, M. Hamagaki, H. Hamar, G. Harris, J. W. Harton, A. Hatzifotiadou, D. Hayashi, S. Heckel, S. T. Heide, M. Helstrup, H. Herghelegiu, A. Herrera Corral, G. Hess, B. A. Hetland, K. F. Hillemanns, H. and Hippolyte, B. Hosokawa, R. Hristov, P. Huang, M. and Humanic, T. J. Hussain, N. Hussain, T. Hutter, D. Hwang, D. S. Ilkaev, R. Inaba, M. Ippolitov, M. Irfan, M. and Ivanov, M. Ivanov, V. Izucheev, V. Jacholkowski, A. and Jacobs, P. M. Jadhav, M. B. Jadlovska, S. Jadlovsky, J. and Jahnke, C. Jakubowska, M. J. Jang, H. J. Janik, M. A. and Jayarathna, P. H. S. Y. Jena, C. Jena, S. Bustamante, R. T. Jimenez Jones, P. G. Jung, H. Jusko, A. Kalinak, P. and Kalweit, A. Kamin, J. Kang, J. H. Kaplin, V. Kar, S. and Uysal, A. Karasu Karavichev, O. Karavicheva, T. Karayan, L. and Karpechev, E. Kebschull, U. Keidel, R. Keijdener, D. L. D. Keil, M. Khan, M. Mohisin Khan, P. Khan, S. A. and Khanzadeev, A. Kharlov, Y. Kileng, B. Kim, B. Kim, D. W. and Kim, D. J. Kim, D. Kim, H. Kim, J. S. Kim, M. and Kim, M. Kim, S. Kim, T. Kirsch, S. Kisel, I. and Kiselev, S. Kisiel, A. Kiss, G. Klay, J. L. Klein, C. and Klein, J. Klein-Boesing, C. Klewin, S. Kluge, A. and Knichel, M. L. Knospe, A. G. Kobayashi, T. Kobdaj, C. and Kofarago, M. Kollegger, T. Kolojvari, A. Kondratiev, V. and Kondratyeva, N. Kondratyuk, E. Konevskikh, A. Kopcik, M. and Kour, M. Kouzinopoulos, C. Kovalenko, O. Kovalenko, V. and Kowalski, M. Meethaleveedu, G. Koyithatta Kralik, I. and Kravcakova, A. Kretz, M. Krivda, M. Krizek, F. Kryshen, E. Krzewicki, M. Kubera, A. M. Kucera, V. Kuhn, C. and Kuijer, P. G. Kumar, A. Kumar, J. Kumar, L. Kumar, S. and Kurashvili, P. Kurepin, A. Kurepin, A. B. Kuryakin, A. and Kweon, M. J. Kwon, Y. La Pointe, S. L. La Rocca, P. and Ladron de Guevara, P. Lagana Fernandes, C. Lakomov, I. and Langoy, R. Lara, C. Lardeux, A. Lattuca, A. Laudi, E. and Lea, R. Leardini, L. Lee, G. R. Lee, S. Lehas, F. and Lemmon, R. C. Lenti, V. Leogrande, E. Leon Monzon, I. and Leon Vargas, H. Leoncino, M. Levai, P. Li, S. Li, X. and Lien, J. Lietava, R. Lindal, S. Lindenstruth, V. and Lippmann, C. Lisa, M. A. Ljunggren, H. M. Lodato, D. F. and Loenne, P. I. Loginov, V. Loizides, C. Lopez, X. Lopez Torres, E. Lowe, A. Luettig, P. Lunardon, M. Luparello, G. Maevskaya, A. Mager, M. Mahajan, S. Mahmood, S. M. and Maire, A. Majka, R. D. Malaev, M. Maldonado Cervantes, I. Malinina, L. Mal'Kevich, D. Malzacher, P. Mamonov, A. and Manko, V. Manso, F. Manzari, V. Marchisone, M. and Mares, J. Margagliotti, G. V. Margotti, A. Margutti, J. and Marin, A. Markert, C. Marquard, M. Martin, N. A. Blanco, J. Martin Martinengo, P. Martinez, M. I. Garcia, G. Martnez and Pedreira, M. Martinez Mas, A. Masciocchi, S. Masera, M. and Masoni, A. Massacrier, L. Mastroserio, A. Matyja, A. and Mayer, C. Mazer, J. Mazzoni, M. A. Mcdonald, D. Meddi, F. Melikyan, Y. Menchaca-Rocha, A. Meninno, E. Perez, J. Mercado Meres, M. Miake, Y. Mieskolainen, M. M. and Mikhaylov, K. Milano, L. Milosevic, J. Minervini, L. M. and Mischke, A. Mishra, A. N. Miskowiec, D. Mitra, J. Mitu, C. M. Mohammadi, N. Mohanty, B. Molnar, L. Montano Zetina, L. Montes, E. De Godoy, D. A. Moreira Moreno, L. A. P. Moretto, S. Morreale, A. Morsch, A. Muccifora, V. and Mudnic, E. Muehlheim, D. Muhuri, S. Mukherjee, M. and Mulligan, J. D. Munhoz, M. G. Munzer, R. H. Murray, S. and Musa, L. Musinsky, J. Naik, B. Nair, R. Nandi, B. K. and Nania, R. Nappi, E. Naru, M. U. Natal da Luz, H. and Nattrass, C. Nayak, K. Nayak, T. K. Nazarenko, S. and Nedosekin, A. Nellen, L. Ng, F. Nicassio, M. Niculescu, M. Niedziela, J. Nielsen, B. S. Nikolaev, S. Nikulin, S. and Nikulin, V. Noferini, F. Nomokonov, P. Nooren, G. and Noris, J. C. C. Norman, J. Nyanin, A. Nystrand, J. and Oeschler, H. Oh, S. Oh, S. K. Ohlson, A. Okatan, A. and Okubo, T. Olah, L. Oleniacz, J. Oliveira Da Silva, A. C. and Oliver, M. H. Onderwaater, J. Oppedisano, C. Orava, R. and Ortiz Velasquez, A. Oskarsson, A. Otwinowski, J. Oyama, K. and Ozdemir, M. Pachmayer, Y. Pagano, P. Paic, G. Pal, S. K. Pan, J. Pandey, A. K. Papcun, P. Papikyan, V. and Pappalardo, G. S. Pareek, P. Park, W. J. Parmar, S. and Passfeld, A. Paticchio, V. Patra, R. N. Paul, B. and Peitzmann, T. Da Costa, H. Pereira Pereira De Oliveira Filho, E. and Peresunko, D. Lara, C. E. Perez Lezama, E. Perez Peskov, V. Pestov, Y. Petracek, V. Petrov, V. Petrovici, M. and Petta, C. Piano, S. Pikna, M. Pillot, P. Pinazza, O. and Pinsky, L. Piyarathna, D. B. Ploskon, M. Planinic, M. and Pluta, J. Pochybova, S. Podesta-Lerma, P. L. M. Poghosyan, M. G. Polichtchouk, B. Poljak, N. Poonsawat, W. Pop, A. and Porteboeuf-Houssais, S. Porter, J. Pospisil, J. Prasad, S. K. Preghenella, R. Prino, F. Pruneau, C. A. and Pshenichnov, I. Puccio, M. Puddu, G. Pujahari, P. Punin, V. Putschke, J. Qvigstad, H. Rachevski, A. Raha, S. and Rajput, S. Rak, J. Rakotozafindrabe, A. Ramello, L. and Rami, F. Raniwala, R. Raniwala, S. Rasanen, S. S. and Rascanu, B. T. Rathee, D. Read, K. F. Redlich, K. Reed, R. J. Rehman, A. Reichelt, P. Reidt, F. Ren, X. and Renfordt, R. Reolon, A. R. Reshetin, A. Revol, J. -P. and Reygers, K. Riabov, V. Ricci, R. A. Richert, T. Richter, M. Riedler, P. Riegler, W. Riggi, F. Ristea, C. and Rocco, E. Rodriguez Cahuantzi, M. Manso, A. Rodriguez Roed, K. Rogochaya, E. Rohr, D. Rohrich, D. Romita, R. and Ronchetti, F. Ronflette, L. Rosnet, P. Rossi, A. and Roukoutakis, F. Roy, A. Roy, C. Roy, P. Rubio Montero, A. J. Rui, R. Russo, R. Ryabinkin, E. Ryabov, Y. and Rybicki, A. Sadovsky, S. Safarik, K. Sahlmuller, B. and Sahoo, P. Sahoo, R. Sahoo, S. Sahu, P. K. Saini, J. and Sakai, S. Saleh, M. A. Salzwedel, J. Sambyal, S. and Samsonov, V. Sandor, L. Sandoval, A. Sano, M. Sarkar, D. and Scapparone, E. Scarlassara, F. Schiaua, C. Schicker, R. and Schmidt, C. Schmidt, H. R. Schuchmann, S. Schukraft, J. and Schulc, M. Schuster, T. Schutz, Y. Schwarz, K. and Schweda, K. Scioli, G. Scomparin, E. Scott, R. Sefcik, M. Seger, J. E. Sekiguchi, Y. Sekihata, D. Selyuzhenkov, I. Senosi, K. Senyukov, S. Serradilla, E. Sevcenco, A. and Shabanov, A. Shabetai, A. Shadura, O. Shahoyan, R. and Shangaraev, A. Sharma, A. Sharma, M. Sharma, M. Sharma, N. Shigaki, K. Shtejer, K. Sibiriak, Y. Siddhanta, S. and Sielewicz, K. M. Siemiarczuk, T. Silvermyr, D. and Silvestre, C. Simatovic, G. Simonetti, G. Singaraju, R. and Singh, R. Singha, S. Singhal, V. Sinha, B. C. Sinha, T. and Sitar, B. Sitta, M. Skaali, T. B. Slupecki, M. and Smirnov, N. Snellings, R. J. M. Snellman, T. W. Sogaard, C. and Song, J. Song, M. Song, Z. Soramel, F. Sorensen, S. and Sozzi, F. Spacek, M. Spiriti, E. Sputowska, I. and Spyropoulou-Stassinaki, M. Stachel, J. Stan, I. Stefanek, G. and Stenlund, E. Steyn, G. Stiller, J. H. Stocco, D. and Strmen, P. Suaide, A. A. P. Sugitate, T. Suire, C. and Suleymanov, M. Suljic, M. Sultanov, R. Sumbera, M. and Szabo, A. Szanto de Toledo, A. Szarka, I. Szczepankiewicz, A. Szymanski, M. Tabassam, U. Takahashi, J. Tambave, G. J. Tanaka, N. Tangaro, M. A. Tarhini, M. Tariq, M. and Tarzila, M. G. Tauro, A. Tejeda Munoz, G. Telesca, A. and Terasaki, K. Terrevoli, C. Teyssier, B. Thader, J. and Thomas, D. Tieulent, R. Timmins, A. R. Toia, A. Trogolo, S. Trombetta, G. Trubnikov, V. Trzaska, W. H. Tsuji, T. and Tumkin, A. Turrisi, R. Tveter, T. S. Ullaland, K. and Uras, A. Usai, G. L. Utrobicic, A. Vajzer, M. Vala, M. and Palomo, L. Valencia Vallero, S. Van der Maarel, J. Van Hoorne, J. W. van Leeuwen, M. Vanat, T. Vyvre, P. Vande and Varga, D. Vargas, A. Vargyas, M. Varma, R. Vasileiou, M. and Vasiliev, A. Vauthier, A. Vechernin, V. Veen, A. M. and Veldhoen, M. Velure, A. Venaruzzo, M. Vercellin, E. and Vergara Limon, S. Vernet, R. Verweij, M. Vickovic, L. and Viesti, G. Viinikainen, J. Vilakazi, Z. Baillie, O. Villalobos Villatoro Tello, A. Vinogradov, A. Vinogradov, L. and Vinogradov, Y. Virgili, T. Vislavicius, V. Viyogi, Y. P. and Vodopyanov, A. Voelkl, M. A. Voloshin, K. Voloshin, S. A. Volpe, G. von Haller, B. Vorobyev, I. Vranic, D. and Vrlakova, J. Vulpescu, B. Vyushin, A. Wagner, B. Wagner, J. Wang, H. Wang, M. Watanabe, D. Watanabe, Y. and Weber, M. Weber, S. G. Weiser, D. F. Wessels, J. P. and Westerhoff, U. Whitehead, A. M. Wiechula, J. Wikne, J. and Wilde, M. Wilk, G. Wilkinson, J. Williams, M. C. S. and Windelband, B. Winn, M. Yaldo, C. G. Yang, H. Yang, P. and Yano, S. Yasar, C. Yin, Z. Yokoyama, H. Yoo, I. -K. and Yoon, J. H. Yurchenko, V. Yushmanov, I. Zaborowska, A. and Zaccolo, V. Zaman, A. Zampolli, C. Zanoli, H. J. C. and Zaporozhets, S. Zardoshti, N. Zarochentsev, A. Zavada, P. and Zaviyalov, N. Zbroszczyk, H. Zgura, I. S. Zhalov, M. and Zhang, H. Zhang, X. Zhang, Y. Zhang, C. Zhang, Z. and Zhao, C. Zhigareva, N. Zhou, D. Zhou, Y. Zhou, Z. and Zhu, H. Zhu, J. Zichichi, A. Zimmermann, A. Zimmermann, M. B. Zinovjev, G. Zyzak, M. ALICE Collaboration
Subjects: High Energy Physics::Experiment, Nuclear Experiment
Abstract: A detailed study of pseudorapidity densities and multiplicity distributions of primary charged particles produced in proton-proton collisions, atv root s = 0.9, 2.36, 2.76, 7 and 8 TeV, in the pseudorapidity range vertical bar n vertical bar< 2, was carried out using the ALICE detector. Measurements were obtained for three event classes: inelastic, non-single diffractive and events with at least one charged particle in the pseudorapidity interval vertical bar n vertical bar
Published: 2017

21. W and Z boson production in p-Pb collisions at TeV root s(NN)=5.02 TeV

Author: Adam, J. Adamova, D. Aggarwal, M. M. Rinella, G. Aglieri and Agnello, M. Agrawal, N. Ahammed, Z. Ahmad, S. Ahn, S. U. and Aiola, S. Akindinov, A. Alam, S. N. Albuquerque, D. S. D. Aleksandrov, D. Alessandro, B. Alexandre, D. Alfaro Molina, R. Alici, A. Alkin, A. Alme, J. Alt, T. and Altinpinar, S. Altsybeev, I. Alves Garcia Prado, C. An, M. and Andrei, C. Andrews, H. A. Andronic, A. Anguelov, V. and Anson, C. Anticic, T. Antinori, F. Antonioli, P. Anwar, R. Aphecetche, L. Appelshaeuser, H. Arcelli, S. Arnaldi, R. Arnold, O. W. Arsene, I. C. Arslandok, M. Audurier, B. Augustinus, A. Averbeck, R. Azmi, M. D. Badala, A. and Baek, Y. W. Bagnasco, S. Bailhache, R. Bala, R. and Balasubramanian, S. Baldisseri, A. Baral, R. C. Barbano, A. M. Barbera, R. Barile, F. Barnafoldi, G. G. Barnby, L. S. Barret, V. Bartalini, P. Barth, K. Bartke, J. and Bartsch, E. Basile, M. Bastid, N. Basu, S. Bathen, B. and Batigne, G. Camejo, A. Batista Batyunya, B. Batzing, P. C. Bearden, I. G. Beck, H. Bedda, C. Behera, N. K. and Belikov, I. Bellini, F. Bello Martinez, H. Bellwied, R. and Beltran, L. G. E. Belyaev, V. Bencedi, G. Beole, S. and Bercuci, A. Berdnikov, Y. Berenyi, D. Bertens, R. A. and Berzano, D. Betev, L. Bhasin, A. Bhat, I. R. Bhati, A. K. Bhattacharjee, B. Bhom, J. Bianchi, L. Bianchi, N. and Bianchin, C. Bielcik, J. Bielcikova, J. Bilandzic, A. and Biro, G. Biswas, R. Biswas, S. Bjelogrlic, S. Blair, J. T. Blau, D. Blume, C. Bock, F. Bogdanov, A. and Boldizsar, L. Bombara, M. Bonora, M. Book, J. Borel, H. and Borissov, A. Borri, M. Bossu, F. Botta, E. Bourjau, C. Braun-Munzinger, P. Bregant, M. Broker, T. A. and Browning, T. A. Broz, M. Brucken, E. J. Bruna, E. Bruno, G. E. Budnikov, D. Buesching, H. Bufalino, S. Buhler, P. and Buitron, S. A. I. Buncic, P. Busch, O. Buthelezi, Z. and Butt, J. B. Buxton, J. T. Cabala, J. Caffarri, D. and Caines, H. Caliva, A. Calvo Villar, E. Camerini, P. and Carena, F. Carena, W. Carnesecchi, F. Castellanos, J. Castillo Castro, A. J. Casula, E. A. R. Ceballos Sanchez, C. and Cepila, J. Cerello, P. Cerkala, J. Chang, B. and Chapeland, S. Chartier, M. Charvet, J. L. Chattopadhyay, S. and Chattopadhyay, S. Chauvin, A. Chelnokov, V. Cherney, M. and Cheshkov, C. Cheynis, B. Barroso, V. Chibante and Chinellato, D. D. Cho, S. Chochula, P. Choi, K. and Chojnacki, M. Choudhury, S. Christakoglou, P. Christensen, C. H. Christiansen, P. Chujo, T. Chung, S. U. Cicalo, C. and Cifarelli, L. Cindolo, F. Cleymans, J. Colamaria, F. and Colella, D. Collu, A. Colocci, M. Balbastre, G. Conesa and del Valle, Z. Conesa Connors, M. E. Contreras, J. G. and Cormier, T. M. Morales, Y. Corrales Cortes Maldonado, I. and Cortese, P. Cosentino, M. R. Costa, F. Crkovska, J. and Crochet, P. Cruz Albino, R. Cuautle, E. Cunqueiro, L. and Dahms, T. Dainese, A. Danisch, M. C. Danu, A. Das, D. and Das, I. Das, S. Dash, A. Dash, S. De, S. De Caro, A. de Cataldo, G. de Conti, C. de Cuveland, J. De Falco, A. De Gruttola, D. De Marco, N. De Pasquale, S. and De Souza, R. D. Deisting, A. Deloff, A. Deplano, C. and Dhankher, P. Di Bari, D. Di Mauro, A. Di Nezza, P. Di Ruzza, B. Corchero, M. A. Diaz Dietel, T. Dillenseger, P. and Divia, R. Djuvsland, O. Dobrin, A. Domenicis Gimenez, D. and Doenigus, B. Dordic, O. Drozhzhova, T. Dubey, A. K. and Dubla, A. Ducroux, L. Duggal, A. K. Dupieux, P. Ehlers, R. J. Elia, D. Endress, E. Engel, H. Epple, E. and Erazmus, B. Erhardt, F. Espagnon, B. Esumi, S. Eulisse, G. Eum, J. Evans, D. Evdokimov, S. Eyyubova, G. and Fabbietti, L. Fabris, D. Faivre, J. Fantoni, A. Fasel, M. Feldkamp, L. Feliciello, A. Feofilov, G. Ferencei, J. and Fernandez Tellez, A. Ferreiro, E. G. Ferretti, A. and Festanti, A. Feuillard, V. J. G. Figiel, J. Figueredo, M. A. S. Filchagin, S. Finogeev, D. Fionda, F. M. Fiore, E. M. and Floris, M. Foertsch, S. Foka, P. Fokin, S. and Fragiacomo, E. Francescon, A. Francisco, A. Frankenfeld, U. and Fronze, G. G. Fuchs, U. Furget, C. Furs, A. Girard, M. Fusco Gaardhoje, J. J. Gagliardi, M. Gago, A. M. and Gajdosova, K. Gallio, M. Galvan, C. D. Gangadharan, D. R. and Ganoti, P. Gao, C. Garabatos, C. Garcia-Solis, E. and Garg, K. Garg, P. Gargiulo, C. Gasik, P. Gauger, E. F. and Gay Ducati, M. B. Germain, M. Ghosh, P. Ghosh, S. K. and Gianotti, P. Giubellino, P. Giubilato, P. Gladysz-Dziadus, E. Glaessel, P. Gomez Coral, D. M. Ramirez, A. Gomez and Gonzalez, A. S. Gonzalez, V. Gonzalez-Zamora, P. Gorbunov, S. Goerlich, L. Gotovac, S. Grabski, V. Graczykowski, L. K. Graham, K. L. Greiner, L. Grelli, A. Grigoras, C. and Grigoriev, V. Grigoryan, A. Grigoryan, S. Grion, N. and Gronefeld, J. M. Grosse-Oetringhaus, J. F. Grosso, R. and Gruber, L. Guber, F. Guernane, R. Guerzoni, B. and Gulbrandsen, K. Gunji, T. Gupta, A. Gupta, R. Guzman, I. B. Haake, R. Hadjidakis, C. Hamagaki, H. Hamar, G. and Hamon, J. C. Harris, J. W. Harton, A. Hatzifotiadou, D. and Hayashi, S. Heckel, S. T. Hellbaer, E. Helstrup, H. and Herghelegiu, A. Herrera Corral, G. Herrmann, F. Hess, B. A. and Hetland, K. F. Hillemanns, H. Hippolyte, B. Hladky, J. and Horak, D. Hosokawa, R. Hristov, P. Hughes, C. and Humanic, T. J. Hussain, N. Hussain, T. Hutter, D. Hwang, D. S. Ilkaev, R. Inaba, M. Ippolitov, M. Irfan, M. and Isakov, V. Islam, M. S. Ivanov, M. Ivanov, V. Izucheev, V. Jacak, B. Jacazio, N. Jacobs, P. M. Jadhav, M. B. and Jadlovska, S. Jadlovsky, J. Jahnke, C. Jakubowska, M. J. and Janik, M. A. Jayarathna, P. H. S. Y. Jena, C. Jena, S. and Bustamante, R. T. Jimenez Jones, P. G. Jusko, A. Kalinak, P. and Kalweit, A. Kang, J. H. Kaplin, V. Kar, S. Uysal, A. Karasu Karavichev, O. Karavicheva, T. Karayan, L. and Karpechev, E. Kebschull, U. Keidel, R. Keijdener, D. L. D. and Keil, M. Khan, M. Mohisin Khan, P. Khan, S. A. and Khanzadeev, A. Kharlov, Y. Khatun, A. Khuntia, A. and Kileng, B. Kim, D. W. Kim, D. J. Kim, D. Kim, H. and Kim, J. S. Kim, J. Kim, M. Kim, M. Kim, S. Kim, T. and Kirsch, S. Kisel, I. Kiselev, S. Kisiel, A. Kiss, G. and Klay, J. L. Klein, C. Klein, J. Klein-Boesing, C. and Klewin, S. Kluge, A. Knichel, M. L. Knospe, A. G. and Kobdaj, C. Kofarago, M. Kollegger, T. Kolojvari, A. and Kondratiev, V. Kondratyeva, N. Kondratyuk, E. Konevskikh, A. and Kopcik, M. Kour, M. Kouzinopoulos, C. Kovalenko, O. and Kovalenko, V. Kowalski, M. Meethaleveedu, G. Koyithatta and Kralik, I. Kravcakova, A. Krivda, M. Krizek, F. Kryshen, E. Krzewicki, M. Kubera, A. M. Kucera, V. Kuhn, C. and Kuijer, P. G. Kumar, A. Kumar, J. Kumar, L. Kumar, S. and Kundu, S. Kurashvili, P. Kurepin, A. Kurepin, A. B. and Kuryakin, A. Kushpil, S. Kweon, M. J. Kwon, Y. La Pointe, S. L. La Rocca, P. Lagana Fernandes, C. Lakomov, I. and Langoy, R. Lapidus, K. Lara, C. Lardeux, A. Lattuca, A. Laudi, E. Lazaridis, L. Lea, R. Leardini, L. Lee, S. Lehas, F. Lehner, S. Lehrbach, J. Lemmon, R. C. and Lenti, V. Leogrande, E. Leon Monzon, I. Levai, P. Li, S. and Li, X. Lien, J. Lietava, R. Lindal, S. Lindenstruth, V. Lippmann, C. Lisa, M. A. Ljunggren, H. M. Llope, W. and Lodato, D. F. Loenne, P. I. Loginov, V. Loizides, C. and Lopez, X. Lopez Torres, E. Lowe, A. Luettig, P. and Lunardon, M. Luparello, G. Lupi, M. Lutz, T. H. and Maevskaya, A. Mager, M. Mahajan, S. Mahmood, S. M. and Maire, A. Majka, R. D. Malaev, M. Maldonado Cervantes, I. and Malinina, L. Mal'Kevich, D. Malzacher, P. Mamonov, A. and Manko, V. Manso, F. Manzari, V. Mao, Y. Marchisone, M. Mares, J. Margagliotti, G. V. Margotti, A. Margutti, J. Marin, A. Markert, C. Marquard, M. Martin, N. A. and Martinengo, P. Martinez, M. I. Martinez Garcia, G. Pedreira, M. Martinez Mas, A. Masciocchi, S. Masera, M. Masoni, A. and Mastroserio, A. Mathis, A. M. Matyja, A. Mayer, C. and Mazer, J. Mazzilli, M. Mazzoni, M. A. Meddi, F. and Melikyan, Y. Menchaca-Rocha, A. Meninno, E. Mercado Perez, J. Meres, M. Mhlanga, S. Miake, Y. Mieskolainen, M. M. and Mikhaylov, K. Milano, L. Milosevic, J. Mischke, A. and Mishra, A. N. Mishra, T. Miskowiec, D. Mitra, J. Mitu, C. M. Mohammadi, N. Mohanty, B. Molnar, L. Montes, E. and De Godoy, D. A. Moreira Moreno, L. A. P. Moretto, S. and Morreale, A. Morsch, A. Muccifora, V. Mudnic, E. and Muehlheim, D. Muhuri, S. Mukherjee, M. Mulligan, J. D. and Munhoz, M. G. Muenning, K. Munzer, R. H. Murakami, H. and Murray, S. Musa, L. Musinsky, J. Myers, C. J. Naik, B. and Nair, R. Nandi, B. K. Nania, R. Nappi, E. Naru, M. U. Natal da Luz, H. Nattrass, C. Navarro, S. R. Nayak, K. Nayak, R. Nayak, T. K. Nazarenko, S. Nedosekin, A. and De Oliveira, R. A. Negrao Nellen, L. Ng, F. Nicassio, M. and Niculescu, M. Niedziela, J. Nielsen, B. S. Nikolaev, S. and Nikulin, S. Nikulin, V. Noferini, F. Nomokonov, P. and Nooren, G. Noris, J. C. C. Norman, J. Nyanin, A. and Nystrand, J. Oeschler, H. Oh, S. Ohlson, A. Okubo, T. and Olah, L. Oleniacz, J. Da Silva, A. C. Oliveira Oliver, M. H. Onderwaater, J. Oppedisano, C. Orava, R. Oravec, M. Ortiz Velasquez, A. Oskarsson, A. Otwinowski, J. and Oyama, K. Ozdemir, M. Pachmayer, Y. Pacik, V. Pagano, D. and Pagano, P. Paic, G. Pal, S. K. Palni, P. Pan, J. and Pandey, A. K. Papikyan, V. Pappalardo, G. S. Pareek, P. and Park, J. Park, W. J. Parmar, S. Passfeld, A. Paticchio, V. Patra, R. N. Paul, B. Pei, H. Peitzmann, T. Peng, X. Da Costa, H. Pereira Peresunko, D. Lezama, E. Perez and Peskov, V. Pestov, Y. Petracek, V. Petrov, V. Petrovici, M. Petta, C. Piano, S. Pikna, M. Pillot, P. and Pimentel, L. O. D. L. Pinazza, O. Pinsky, L. Piyarathna, D. B. Loskon, M. P. Planinic, M. Pluta, J. Pochybova, S. and Podesta-Lerma, P. L. M. Poghosyan, M. G. Polichtchouk, B. and Poljak, N. Poonsawat, W. Pop, A. Poppenborg, H. and Porteboeuf-Houssais, S. Porter, J. Pospisil, J. Pozdniakov, V. Prasad, S. K. Preghenella, R. Prino, F. Pruneau, C. A. Pshenichnov, I. Puccio, M. Puddu, G. Pujahari, P. and Punin, V. Putschke, J. Qvigstad, H. Rachevski, A. Raha, S. Rajput, S. Rak, J. Rakotozafindrabe, A. Ramello, L. and Rami, F. Rana, D. B. Raniwala, R. Raniwala, S. and Rasanen, S. S. Rascanu, B. T. Rathee, D. Ratza, V. and Ravasenga, I. Read, K. F. Redlich, K. Rehman, A. and Reichelt, P. Reidt, F. Ren, X. Renfordt, R. Reolon, A. R. Reshetin, A. Reygers, K. Riabov, V. Ricci, R. A. and Richert, T. Richter, M. Riedler, P. Riegler, W. Riggi, F. Ristea, C. Rodriguez Cahuantzi, M. Roed, K. and Rogochaya, E. Rohr, D. Rohrich, D. Ronchetti, F. Ette, L. Ron Rosnet, P. Rossi, A. Roukoutakis, F. Roy, A. and Roy, C. Roy, P. Rubio Montero, A. J. Rui, R. Russo, R. and Ryabinkin, E. Ryabov, Y. Rybicki, A. Saarinen, S. and Sadhu, S. Sadovsky, S. Safarik, K. Sahlmuller, B. Sahoo, B. Sahoo, P. Sahoo, R. Sahoo, S. Sahu, P. K. Saini, J. Sakai, S. Saleh, M. A. Salzwedel, J. Sambyal, S. and Samsonov, V. Sandoval, A. Sano, M. Sarkar, D. Sarkar, N. and Sarma, P. Sas, M. H. P. Scapparone, E. Scarlassara, F. and Scharenberg, R. P. Schiaua, C. Schicker, R. Schmidt, C. and Schmidt, H. R. Schmidt, M. Schukraft, J. Schutz, Y. and Schwarz, K. Schweda, K. Scioli, G. Scomparin, E. Scott, R. Sefcik, M. Seger, J. E. Sekiguchi, Y. Sekihata, D. and Selyuzhenkov, I. Senosi, K. Senyukov, S. Serradilla, E. and Sett, P. Sevcenco, A. Shabanov, A. Shabetai, A. and Shadura, O. Shahoyan, R. Shangaraev, A. Sharma, A. and Sharma, A. Sharma, M. Sharma, M. Sharma, N. Sheikh, A. I. Shigaki, K. Shou, Q. Shtejer, K. Sibiriak, Y. and Siddhanta, S. Sielewicz, K. M. Siemiarczuk, T. Silvermyr, D. and Silvestre, C. Simatovic, G. Simonetti, G. Singaraju, R. and Singh, R. Singhal, V. Sinha, T. Sitar, B. Sitta, M. and Skaali, T. B. Slupecki, M. Smirnov, N. Snellings, R. J. M. Snellman, T. W. Song, J. Song, M. Song, Z. and Soramel, F. Sorensen, S. Sozzi, F. Spiriti, E. and Sputowska, I. Srivastava, B. K. Stachel, J. Stan, I. and Stankus, P. Stenlund, E. Steyn, G. Stiller, J. H. and Stocco, D. Strmen, P. Suaide, A. A. P. Sugitate, T. and Suire, C. Suleymanov, M. Suljic, M. Sultanov, R. and Sumbera, M. Sumowidagdo, S. Suzuki, K. Swain, S. Szabo, A. Szarka, I. Szczepankiewicz, A. 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Volpe, G. von Haller, B. Vorobyev, I. Voscek, D. and Vranic, D. Vrlakova, J. Wagner, B. Wagner, J. Wang, H. and Wang, M. Watanabe, D. Watanabe, Y. Weber, M. Weber, S. G. Weiser, D. F. Wessels, J. P. Ff, U. Westerho and Whitehead, M. Wiechula, J. Wikne, J. Wilk, G. Wilkinson, J. Willems, G. A. Williams, M. C. S. Windelband, B. and Winn, M. Witt, W. E. Yalcin, S. Yang, P. Yano, S. and Yin, Z. Yokoyama, H. Yoo, I. -K. Yoon, J. H. Yurchenko, V. Zaccolo, V. Zaman, A. Zampolli, C. Zanoli, H. J. C. and Zaporozhets, S. Zardoshti, N. Zarochentsev, A. Zavada, P. Zaviyalov, N. Zbroszczyk, H. Zhalov, M. Zhang, H. and Zhang, X. Zhang, Y. Zhang, C. Zhang, Z. Zhao, C. and Zhigareva, N. Zhou, D. Zhou, Y. Zhou, Z. Zhu, H. and Zhu, J. Zichichi, A. Zimmermann, A. Zimmermann, M. B. and Zinovjev, G. Zmeskal, J. ALICE Collboration
Subjects: Physics::Instrumentation and Detectors, High Energy Physics::Experiment, Nuclear Experiment
Abstract: The W and Z boson production was measured via the muonic decay channel in proton-lead collisions at root s(NN) = 5.02 TeV at the Large Hadron Collider with the ALICE detector. The measurement covers backward (4.46 < y(cms) < 2.96) and forward (2.03 < y(cms) < 3.53) rapidity regions, corresponding to Pb-going and p-going directions, respectively. The Z-boson production cross section, with dimuon invariant mass of 60 < m(mu mu) < 120 GeV/c(2) and muon transverse momentum (p(T)(mu)) larger than 20 GeV/c, is measured. The production cross section and charge asymmetry of muons from W-boson decays with p(T)(mu) > 10 GeV/c are determined. The results are compared to theoretical calculations both with and without including the nuclear modification of the parton distribution functions. The W-boson production is also studied as a function of the collision centrality: the cross section of muons from W-boson decays is found to scale with the average number of binary nucleon-nucleon collisions within uncertainties.
Published: 2017

22. Centrality dependence of high-p(T) D-meson suppression in Pb-Pb collisions at root s(NN) = 2.7 6 TeV (vol 2015, 2015)

Author: Adam, J. Adamova, D. Aggarwal, M. M. Rinella, G. Aglieri and Agnello, M. Agrawal, N. Ahammed, Z. Ahn, S. U. Aimo, I. and Aiola, S. Ajaz, M. Akindinov, A. Alam, S. N. and Aleksandrov, D. Alessandro, B. Alexandre, D. Alfaro Molina, R. Alici, A. Alkin, A. Almaraz, J. R. M. Alme, J. and Alt, T. Altinpinar, S. Altsybeev, I. Alves Garcia Prado, C. and Andrei, C. Andronic, A. Anguelov, V. Anielski, J. and Anticic, T. Antinori, F. Antonioli, P. Aphecetche, L. and Appelshaeuser, H. Arcelli, S. Armesto, N. Arnaldi, R. and Arsene, I. C. Arslandok, M. Audurier, B. Augustinus, A. and Averbeck, R. Azmi, M. D. Bach, M. Badala, A. Baek, Y. W. and Bagnasco, S. Bailhache, R. Bala, R. Baldisseri, A. and Pedrosa, F. Baltasar Dos Santos Baral, R. C. Barbano, A. M. and Barbera, R. Barile, F. Barnafoeldi, G. G. Barnby, L. S. and Barret, V. Bartalini, P. Barth, K. Bartke, J. Bartsch, E. Basile, M. Bastid, N. Basu, S. Bathen, B. and Batigne, G. Camejo, A. Batista Batyunya, B. Batzing, P. C. and Bearden, I. G. Beck, H. Bedda, C. Behera, N. K. and Belikov, I. Bellini, F. Bello Martinez, H. Bellwied, R. and Belmont, R. Belmont-Moreno, E. Belyaev, V. Bencedi, G. and Beole, S. Berceanu, I. Bercuci, A. Berdnikov, Y. and Berenyi, D. Bertens, R. A. Berzano, D. Betev, L. Bhasin, A. Bhat, I. R. Bhati, A. K. Bhattacharjee, B. Bhom, J. and Bianchi, L. Bianchi, N. Bianchin, C. Bielcik, J. and Bielcikova, J. Bilandzic, A. Biswas, R. Biswas, S. and Bjelogrlic, S. Blanco, F. Blau, D. Blume, C. Bock, F. and Bogdanov, A. Boggild, H. Boldizsar, L. Bombara, M. and Book, J. Borel, H. Borissov, A. Borri, M. Bossu, F. and Botta, E. Boettger, S. Braun-Munzinger, P. Bregant, M. and Breitner, T. Broker, T. A. Browning, T. A. Broz, M. and Brucken, E. J. Bruna, E. Bruno, G. E. Budnikov, D. and Buesching, H. Bufalino, S. Buncic, P. Busch, O. and Buthelezi, Z. Butt, J. B. Buxton, J. T. Caffarri, D. and Cai, X. Caines, H. Diaz, L. Calero Caliva, A. Calvo Villar, E. Camerini, P. Carena, F. Carena, W. and Castellanos, J. Castillo Castro, A. J. Casula, E. A. R. and Cavicchioli, C. Ceballos Sanchez, C. Cepila, J. Cerello, P. and Cerkala, J. Chang, B. Chapeland, S. Chartier, M. and Charvet, J. L. Chattopadhyay, S. Chattopadhyay, S. and Chelnokov, V. Cherney, M. Cheshkov, C. Cheynis, B. and Barroso, V. Chibante Chinellato, D. D. Chochula, P. Choi, K. and Chojnacki, M. Choudhury, S. Christakoglou, P. and Christensen, C. H. Christiansen, P. Chujo, T. Chung, S. U. and Chunhui, Z. Cicalo, C. Cifarelli, L. Cindolo, F. and Cleymans, J. Colamaria, F. Colella, D. Collu, A. and Colocci, M. Balbastre, G. Conesa del Valle, Z. Conesa and Connors, M. E. Contreras, J. G. Cormier, T. M. Morales, Y. Corrales Maldonado, I. Cortes Cortese, P. Cosentino, M. R. and Costa, F. Crochet, P. Cruz Albino, R. Cuautle, E. and Cunqueiro, L. Dahms, T. Dainese, A. Danu, A. Das, D. and Das, I. Das, S. Dash, A. Dash, S. De, S. De Caro, A. and de Cataldo, G. de Cuveland, J. De Falco, A. De Gruttola, D. 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Muehlheim, D. Muhuri, S. and Mukherjee, M. Mulligan, J. D. Munhoz, M. G. Murray, S. and Musa, L. Musinsky, J. Nandi, B. K. Nania, R. Nappi, E. and Naru, M. U. Nattrass, C. Nayak, K. Nayak, T. K. and Nazarenko, S. Nedosekin, A. Nellen, L. Ng, F. Nicassio, M. Niculescu, M. Niedziela, J. Nielsen, B. S. Nikolaev, S. Nikulin, S. Nikulin, V. Noferini, F. Nomokonov, P. and Nooren, G. Noris, J. C. C. Norman, J. Nyanin, A. and Nystrand, J. Oeschler, H. Oh, S. Oh, S. K. Ohlson, A. and Okatan, A. Okubo, T. Olah, L. Oleniacz, J. Oliveira Da Silva, A. C. Oliver, M. H. Onderwaater, J. Oppedisano, C. and Orava, R. Ortiz Velasquez, A. Oskarsson, A. Otwinowski, J. Oyama, K. Ozdemir, M. Pachmayer, Y. Pagano, P. and Paic, G. Pajares, C. Pal, S. K. Pan, J. Pandey, A. K. and Pant, D. Papcun, P. Papikyan, V. Pappalardo, G. S. and Pareek, P. Park, W. J. Parmar, S. Passfeld, A. and Paticchio, V. Patra, R. N. Paul, B. Peitzmann, T. Da Costa, H. Pereira Pereira De Oliveira Filho, E. Peresunko, D. and Lara, C. E. Perez Lezama, E. Perez Peskov, V. Pestov, Y. and Petracek, V. Petrov, V. Petrovici, M. Petta, C. and Piano, S. Pikna, M. Pillot, P. Pinazza, O. Pinsky, L. and Piyarathna, D. B. Ploskon, M. Planinic, M. Pluta, J. and Pochybova, S. Podesta-Lerma, P. L. M. Poghosyan, M. G. and Polichtchouk, B. Poljak, N. Poonsawat, W. Pop, A. and Porteboeuf-Houssais, S. Porter, J. Pospisil, J. Prasad, S. K. Preghenella, R. Prino, F. Pruneau, C. A. Pshenichnov, I. Puccio, M. Puddu, G. Pujahari, P. Punin, V. and Putschke, J. Qvigstad, H. Rachevski, A. Raha, S. Rajput, S. Rak, J. Ndrabe, A. Rakotoza Fi Ramello, L. Raniwala, R. Raniwala, S. Raesaenen, S. S. Rascanu, B. T. Rathee, D. Read, K. F. Real, J. S. Redlich, K. Reed, R. J. and Rehman, A. Reichelt, P. Reidt, F. Ren, X. Renfordt, R. and Reolon, A. R. Reshetin, A. Rettig, F. Revol, J. -P. and Reygers, K. Riabov, V. Ricci, R. A. Richert, T. Richter, M. Riedler, P. Riegler, W. Riggi, F. Ristea, C. and Rivetti, A. Rocco, E. Rodriguez Cahuantzi, M. Manso, A. Rodriguez Roed, K. Rogochaya, E. Rohr, D. Rohrich, D. and Romita, R. Ronchetti, F. Ette, L. Ron Rosnet, P. and Rossi, A. Roukoutakis, F. Roy, A. Roy, C. Roy, P. and Rubio Montero, A. J. Rui, R. Russo, R. Ryabinkin, E. and Ryabov, Y. Rybicki, A. Sadovsky, S. Safarik, K. and Sahlmuller, B. Sahoo, P. Sahoo, R. Sahoo, S. Sahu, P. K. and Saini, J. Sakai, S. Saleh, M. A. Salgado, C. A. and Salzwedel, J. Sambyal, S. Samsonov, V. Castro, X. Sanchez and Sandor, L. Sandoval, A. Sano, M. Sarkar, D. and Scapparone, E. Scarlassara, F. Scharenberg, R. P. Schiaua, C. Schicker, R. Schmidt, C. Schmidt, H. R. Schuchmann, S. Schukraft, J. Schulc, M. Schuster, T. Schutz, Y. and Schwarz, K. Schweda, K. Scioli, G. Scomparin, E. Scott, R. Seeder, K. S. Seger, J. E. Sekiguchi, Y. Sekihata, D. and Selyuzhenkov, I. Senosi, K. Seo, J. Serradilla, E. and Sevcenco, A. Shabanov, A. Shabetai, A. Shadura, O. and Shahoyan, R. Shangaraev, A. Sharma, A. Sharma, M. and Sharma, M. Sharma, N. Shigaki, K. Shtejer, K. Sibiriak, Y. Siddhanta, S. Sielewicz, K. M. Siemiarczuk, T. and Silvermyr, D. Silvestre, C. Simatovic, G. Simonetti, G. and Singaraju, R. Singh, R. Singha, S. Singhal, V. Sinha, B. C. Sinha, T. Sitar, B. Sitta, M. Skaali, T. B. and Slupecki, M. Smirnov, N. Snellings, R. J. M. Snellman, T. W. and Sogaard, C. Soltz, R. Song, J. Song, M. Song, Z. and Soramel, F. Sorensen, S. Spacek, M. Spiriti, E. and Sputowska, I. Spyropoulou-Stassinaki, M. Srivastava, B. K. and Stachel, J. Stan, I. Stefanek, G. Steinpreis, M. and Stenlund, E. Steyn, G. Stiller, J. H. Stocco, D. Strmen, P. Suaide, A. A. P. Sugitate, T. Suire, C. Suleymanov, M. Sultanov, R. Sumbera, M. Symons, T. J. M. Szabo, A. and de Toledo, A. Szanto Szarka, I. Szczepankiewicz, A. and Szymanski, M. Takahashi, J. Tanaka, N. Tangaro, M. A. and Takaki, J. D. Tapia Peloni, A. Tarantola Tarhini, M. Tariq, M. Tarzila, M. G. Tauro, A. Tejeda Munoz, G. Telesca, A. and Terasaki, K. Terrevoli, C. Teyssier, B. Thaeder, J. and Thomas, D. Tieulent, R. Timmins, A. R. Toia, A. Trogolo, S. Trubnikov, V. Trzaska, W. H. Tsuji, T. Tumkin, A. and Turrisi, R. Tveter, T. S. Ullaland, K. Uras, A. Usai, G. L. Utrobicic, A. Vajzer, M. Vala, M. Palomo, L. Valencia and Vallero, S. Van Der Maarel, J. Van Hoorne, J. W. van Leeuwen, M. Vanat, T. Vyvre, P. Vande Varga, D. Vargas, A. Vargyas, M. Varma, R. Vasileiou, M. Vasiliev, A. and Vauthier, A. Vechernin, V. Veen, A. M. Veldhoen, M. and Velure, A. Venaruzzo, M. Vercellin, E. Vergara Limon, S. and Vernet, R. Verweij, M. Vickovic, L. Viesti, G. and Viinikainen, J. Vilakazi, Z. Baillie, O. Villalobos and Vinogradov, A. Vinogradov, L. Vinogradov, Y. Virgili, T. and Vislavicius, V. Viyogi, Y. P. Vodopyanov, A. Voelkl, M. A. and Voloshin, K. Voloshin, S. A. Volpe, G. von Haller, B. and Vorobyev, I. Vranic, D. Vrlakova, J. Vulpescu, B. and Vyushin, A. Wagner, B. Wagner, J. Wang, H. Wang, M. and Wang, Y. Watanabe, D. Watanabe, Y. Weber, M. Weber, S. G. Wessels, J. P. Ff, U. Westerho Wiechula, J. Wikne, J. and Wilde, M. Wilk, G. Wilkinson, J. Williams, M. C. S. and Windelband, B. Winn, M. Yaldo, C. G. Yang, H. Yang, P. and Yano, S. Yin, Z. Yokoyama, H. Yoo, I. -K. Yurchenko, V. Yushmanov, I. Zaborowska, A. Zaccolo, V. Zaman, A. and Zampolli, C. Zanoli, H. J. C. Zaporozhets, S. Zardoshti, N. Zarochentsev, A. Zavada, P. Zaviyalov, N. Zbroszczyk, H. Zgura, I. S. Zhalov, M. Zhang, H. Zhang, X. and Zhang, Y. Zhao, C. Zhigareva, N. Zhou, D. Zhou, Y. and Zhou, Z. Zhu, H. Zhu, J. Zhu, X. Zichichi, A. and Zimmermann, A. Zimmermann, M. B. Zinovjev, G. Zyzak, M. and ALICE Collaboration
Abstract: This is an addendum to the article JHEP 11 (2015) 205 [1]. The figures 3 (right), 4 (right) and 5 are updated with published results on non-prompt J/psi-meson production from the CMS collaboration [2].
Published: 2017

23. Covariation in levels of nucleotide diversity in homologous regions of the avian genome long after completion of lineage sorting

Author: Ludovic, Dutoit, Nagarjun, Vijay, Carina F, Mugal, Christen M, Bossu, Reto, Burri, Jochen, Wolf, and Hans, Ellegren
Subjects: Crows, Recombination, Genetic, recombination rate, Genome, Nucleotides, Karyotype, Genetics and Genomics, nucleotide diversity, Synteny, linked selection, Evolution, Molecular, Songbirds, birds, Animals, human activities, Research Article
Abstract: Closely related species may show similar levels of genetic diversity in homologous regions of the genome owing to shared ancestral variation still segregating in the extant species. However, after completion of lineage sorting, such covariation is not necessarily expected. On the other hand, if the processes that govern genetic diversity are conserved, diversity may potentially covary even among distantly related species. We mapped regions of conserved synteny between the genomes of two divergent bird species—collared flycatcher and hooded crow—and identified more than 600 Mb of homologous regions (66% of the genome). From analyses of whole-genome resequencing data in large population samples of both species we found nucleotide diversity in 200 kb windows to be well correlated (Spearman's ρ = 0.407). The correlation remained highly similar after excluding coding sequences. To explain this covariation, we suggest that a stable avian karyotype and a conserved landscape of recombination rate variation render the diversity-reducing effects of linked selection similar in divergent bird lineages. Principal component regression analysis of several potential explanatory variables driving heterogeneity in flycatcher diversity levels revealed the strongest effects from recombination rate variation and density of coding sequence targets for selection, consistent with linked selection. It is also possible that a stable karyotype is associated with a conserved genomic mutation environment contributing to covariation in diversity levels between lineages. Our observations imply that genetic diversity is to some extent predictable.
Published: 2016

24. Explicit tests of palaeodrainage connections of southeastern North America and the historical biogeography of Orangethroat Darters (Percidae:Etheostoma:Ceasia)

Author: Thomas J. Near, Christen M. Bossu, Jeremy M. Beaulieu, and Patrick A. Ceas
Subjects: Pleistocene, Genetic Speciation, Range (biology), Biogeography, Molecular Sequence Data, Disjunct, DNA, Mitochondrial, Paleontology, Rivers, Genetics, Animals, Glacial period, Phylogeny, Ecology, Evolution, Behavior and Systematics, Cell Nucleus, Geography, Models, Genetic, biology, Ecology, Sequence Analysis, DNA, biology.organism_classification, Phylogeography, Etheostoma, Perches, North America, Biological dispersal, Orangethroat darter
Abstract: The alteration in palaeodrainage river connections has shaped patterns of speciation, genetic diversity and the geographical distribution of the species-rich freshwater fauna of North America. The integration of ancestral range reconstruction methods and divergence time estimates provides an opportunity to infer palaeodrainage connectivity and test alternative palaeodrainage hypotheses. Members of the Orangethroat Darter clade, Ceasia, are endemic to southeastern North America and occur north and south of the Pleistocene glacial front, a distributional pattern that makes this clade of closely related species an ideal system to investigate the number and location of glacial refugia and compare alternative hypotheses regarding the proposed evolution of the Teays-Mahomet palaeodrainage. This study utilized time-calibrated mitochondrial and nuclear gene phylogenies and present-day geographical distributions to investigate hypothesized Teays-Mahomet River connections through time using a dispersal-extinction-cladogenesis (DEC) framework. Results of DEC ancestral area reconstructions indicate that the Teays-Mahomet River was a key dispersal route between disjunct highland regions connecting the Mississippi River tributaries to the Old-Ohio Drainage minimally at two separate occasions during the Pleistocene. There was a dynamic interplay between palaeodrainage connections through time and postglacial range expansion from three glacial refugia that shaped the current genetic structure and geographical distributions of the species that comprise Ceasia.
Published: 2013

25. Charge-dependent flow and the search for the chiral magnetic wave in Pb-Pb collisions at root S-NN=2.76 TeV

Author: Adam, J. Adamova, D. Aggarwal, M. M. Rinella, G. Aglieri and Agnello, M. Agrawal, N. Ahammed, Z. Ahn, S. U. Aiola, S. and Akindinov, A. Alam, S. N. Aleksandrov, D. Alessandro, B. and Alexandre, D. Alfaro Molina, R. Alici, A. Alkin, A. and Almaraz, J. R. M. Alme, J. Alt, T. Altinpinar, S. and Altsybeev, I. Prado, C. Alves Garcia Andrei, C. Andronic, A. and Anguelov, V. Anielski, J. Anticic, T. Antinori, F. and Antonioli, P. Aphecetche, L. Appelshaeuser, H. Arcelli, S. and Arnaldi, R. Arnold, O. W. Arsene, I. C. Arslandok, M. and Audurier, B. Augustinus, A. Averbeck, R. Azmi, M. D. and Badala, A. Baek, Y. W. Bagnasco, S. Bailhache, R. Bala, R. Balasubramanian, S. Baldisseri, A. Baral, R. C. and Barbano, A. M. Barbera, R. Barile, F. Barnafoldi, G. G. and Barnby, L. S. Barret, V. Bartalini, P. Barth, K. Bartke, J. Bartsch, E. Basile, M. Bastid, N. Basu, S. and Bathen, B. Batigne, G. Camejo, A. Batista Batyunya, B. and Batzing, P. C. Bearden, I. G. Beck, H. Bedda, C. Behera, N. K. Belikov, I. Bellini, F. Bello Martinez, H. and Bellwied, R. Belmont, R. Belmont-Moreno, E. Belyaev, V. and Benacek, P. Bencedi, G. Beole, S. Berceanu, I. Bercuci, A. Berdnikov, Y. Berenyi, D. Bertens, R. A. Berzano, D. and Betev, L. Bhasin, A. Bhat, I. R. Bhati, A. K. and Bhattacharjee, B. Bhom, J. Bianchi, L. Bianchi, N. and Bianchin, C. Bielcik, J. Bielcikova, J. Bilandzic, A. and Biro, G. Biswas, R. Biswas, S. Bjelogrlic, S. Blair, J. T. Blau, D. Blume, C. Bock, F. Bogdanov, A. Boggild, H. Boldizsar, L. Bombara, M. Book, J. Borel, H. and Borissov, A. Borri, M. Bossu, F. Botta, E. Bourjau, C. and Braun-Munzinger, P. Bregant, M. Breitner, T. Broker, T. A. Browning, T. A. Broz, M. Brucken, E. J. Bruna, E. and Bruno, G. E. Budnikov, D. Buesching, H. Bufalino, S. and Buncic, P. Busch, O. Buthelezi, Z. Butt, J. B. Buxton, J. T. Caffarri, D. Cai, X. Caines, H. Diaz, L. Calero and Caliva, A. Calvo Villar, E. Camerini, P. Carena, F. and Carena, W. Carnesecchi, F. Castellanos, J. Castillo Castro, A. J. Casula, E. A. R. Ceballos Sanchez, C. Cerello, P. and Cerkala, J. Chang, B. Chapeland, S. Chartier, M. and Charvet, J. L. Chattopadhyay, S. Chattopadhyay, S. Chauvin, A. Chelnokov, V. Cherney, M. Cheshkov, C. Cheynis, B. and Barroso, V. Chibante Chinellato, D. D. Cho, S. Chochula, P. Choi, K. Chojnacki, M. Choudhury, S. Christakoglou, P. Christensen, C. H. Christiansen, P. Chujo, T. Chung, S. U. Cicalo, C. Cifarelli, L. Cindolo, F. Cleymans, J. and Colamaria, F. Colella, D. Collu, A. Colocci, M. and Balbastre, G. Conesa del Valle, Z. Conesa Connors, M. E. and Contreras, J. G. Cormier, T. M. Morales, Y. Corrales Cortes Maldonado, I. Cortese, P. Cosentino, M. R. Costa, F. and Crochet, P. Cruz Albino, R. Cuautle, E. Cunqueiro, L. and Dahms, T. Dainese, A. Danu, A. Das, D. Das, I. Das, S. Dash, A. Dash, S. De, S. De Caro, A. de Cataldo, G. de Conti, C. de Cuveland, J. De Falco, A. De Gruttola, D. De Marco, N. De Pasquale, S. Deisting, A. and Deloff, A. Denes, E. Deplano, C. Dhankher, P. Di Bari, D. Di Mauro, A. Di Nezza, P. Diaz Corchero, M. A. and Dietel, T. Dillenseger, P. Divia, R. Djuvsland, O. and Dobrin, A. Gimenez, D. Domenicis Doenigus, B. Dordic, O. and Drozhzhova, T. Dubey, A. K. Dubla, A. Ducroux, L. and Dupieux, P. Ehlers, R. J. Elia, D. Endress, E. Engel, H. and Epple, E. Erazmus, B. Erdemir, I. Erhardt, F. and Espagnon, B. Estienne, M. Esumi, S. Eum, J. Evans, D. and Evdokimov, S. Eyyubova, G. Fabbietti, L. Fabris, D. and Faivre, J. Fantoni, A. Fasel, M. Feldkamp, L. and Feliciello, A. Feofilov, G. Ferencei, J. Fernandez Tellez, A. Ferreiro, E. G. Ferretti, A. Festanti, A. Feuillard, V. J. G. Figiel, J. Figueredo, M. A. S. Filchagin, S. and Finogeev, D. Fionda, F. M. Fiore, E. M. Fleck, M. G. and Floris, M. Foertsch, S. Foka, P. Fokin, S. Fragiacomo, E. Francescon, A. Frankenfeld, U. Fronze, G. G. Fuchs, U. Furget, C. Furs, A. Girard, M. Fusco Gaardhoje, J. J. and Gagliardi, M. Gago, A. M. Gallio, M. Gangadharan, D. R. and Ganoti, P. Gao, C. Garabatos, C. Garcia-Solis, E. and Gargiulo, C. Gasik, P. Gauger, E. F. Germain, M. Gheata, A. Gheata, M. Ghosh, P. Ghosh, S. K. Gianotti, P. and Giubellino, P. Giubilato, P. Gladysz-Dziadus, E. Glaessel, P. Gomez Coral, D. M. Ramirez, A. Gomez Gonzalez, V. and Gonzalez-Zamora, P. Gorbunov, S. Gorlich, L. Gotovac, S. and Grabski, V. Grachov, O. A. Graczykowski, L. K. Graham, K. L. and Grelli, A. Grigoras, A. Grigoras, C. Grigoriev, V. and Grigoryan, A. Grigoryan, S. Grinyov, B. Grion, N. and Gronefeld, J. M. Grosse-Oetringhaus, J. F. Grossiord, J. -Y. and Grosso, R. Guber, F. Guernane, R. Guerzoni, B. and Gulbrandsen, K. Gunji, T. Gupta, A. Gupta, R. Haake, R. and Haaland, O. Hadjidakis, C. Haiduc, M. Hamagaki, H. and Hamar, G. Hamon, J. C. Harris, J. W. Harton, A. and Hatzifotiadou, D. Hayashi, S. Heckel, S. T. Helstrup, H. and Herghelegiu, A. Herrera Corral, G. Hess, B. A. Hetland, K. F. Hillemanns, H. Hippolyte, B. Horak, D. Hosokawa, R. and Hristov, P. Huang, M. Humanic, T. J. Hussain, N. and Hussain, T. Hutter, D. Hwang, D. S. Ilkaev, R. Inaba, M. and Incani, E. Ippolitov, M. Irfan, M. Ivanov, M. and Ivanov, V. Izucheev, V. Jacazio, N. Jacobs, P. M. and Jadhav, M. B. Jadlovska, S. Jadlovsky, J. Jahnke, C. and Jakubowska, M. J. Jang, H. J. Janik, M. A. Jayarathna, P. H. S. Y. Jena, C. Jena, S. Bustamante, R. T. Jimenez Jones, P. G. Jung, H. Jusko, A. Kalinak, P. Kalweit, A. and Kamin, J. Kang, J. H. Kaplin, V. Kar, S. Uysal, A. Karasu Karavichev, O. Karavicheva, T. Karayan, L. and Karpechev, E. Kebschull, U. Keidel, R. Keijdener, D. L. D. and Keil, M. Khan, M. Mohisin Khan, P. Khan, S. A. and Khanzadeev, A. Kharlov, Y. Kileng, B. Kim, D. W. Kim, D. J. Kim, D. Kim, H. Kim, J. S. Kim, M. Kim, M. and Kim, S. Kim, T. Kirsch, S. Kisel, I. Kiselev, S. and Kisiel, A. Kiss, G. Klay, J. L. Klein, C. Klein, J. and Klein-Boesing, C. Klewin, S. Kluge, A. Knichel, M. L. and Knospe, A. G. Kobdaj, C. Kofarago, M. Kollegger, T. and Kolojvari, A. Kondratiev, V. Kondratyeva, N. Kondratyuk, E. and Konevskikh, A. Kopcik, M. Kour, M. Kouzinopoulos, C. and Kovalenko, O. Kovalenko, V. Kowalski, M. Meethaleveedu, G. Koyithatta Kralik, I. Kravcakova, A. Kretz, M. Krivda, M. Krizek, F. Kryshen, E. Krzewicki, M. Kubera, A. M. and Kucera, V. Kuhn, C. Kuijer, P. G. Kumar, A. Kumar, J. Kumar, L. Kumar, S. Kurashvili, P. Kurepin, A. and Kurepin, A. B. Kuryakin, A. Kweon, M. J. Kwon, Y. La Pointe, S. L. La Rocca, P. Ladron de Guevara, P. Fernandes, C. Lagana Lakomov, I. Langoy, R. Lara, C. Lardeux, A. and Lattuca, A. Laudi, E. Lea, R. Leardini, L. Lee, G. R. Lee, S. Lehas, F. Lemmon, R. C. Lenti, V. and Leogrande, E. Monzon, I. Leon Leon Vargas, H. Leoncino, M. and Levai, P. Li, S. Li, X. Lien, J. Lietava, R. and Lindal, S. Lindenstruth, V. Lippmann, C. Lisa, M. A. and Ljunggren, H. M. Lodato, D. F. Loenne, P. I. Loginov, V. and Loizides, C. Lopez, X. Lopez Torres, E. Lowe, A. and Luettig, P. Lunardon, M. Luparello, G. Lutz, T. H. and Maevskaya, A. Mager, M. Mahajan, S. Mahmood, S. M. and Maire, A. Majka, R. D. Malaev, M. Maldonado Cervantes, I. and Malinina, L. Mal'Kevich, D. Malzacher, P. Mamonov, A. and Manko, V. Manso, F. Manzari, V. Marchisone, M. and Mares, J. Margagliotti, G. V. Margotti, A. Margutti, J. and Marin, A. Markert, C. Marquard, M. Martin, N. A. Blanco, J. Martin Martinengo, P. Martinez, M. I. Garcia, G. Martinez and Pedreira, M. Martinez Mas, A. Masciocchi, S. Masera, M. and Masoni, A. Massacrier, L. Mastroserio, A. Matyja, A. and Mayer, C. Mazer, J. Mazzoni, M. A. Mcdonald, D. Meddi, F. Melikyan, Y. Menchaca-Rocha, A. Meninno, E. Perez, J. Mercado Meres, M. Miake, Y. Mieskolainen, M. M. and Mikhaylov, K. Milano, L. Milosevic, J. Minervini, L. M. and Mischke, A. Mishra, A. N. Miskowiec, D. Mitra, J. Mitu, C. M. Mohammadi, N. Mohanty, B. Molnar, L. Montano Zetina, L. Montes, E. De Godoy, D. A. Moreira Moreno, L. A. P. Moretto, S. Morreale, A. Morsch, A. Muccifora, V. and Mudnic, E. Muehlheim, D. Muhuri, S. Mukherjee, M. and Mulligan, J. D. Munhoz, M. G. Munzer, R. H. Murakami, H. and Murray, S. Musa, L. Musinsky, J. Naik, B. Nair, R. and Nandi, B. K. Nania, R. Nappi, E. Naru, M. U. da Luz, H. Natal Nattrass, C. Navarro, S. R. Nayak, K. Nayak, R. and Nayak, T. K. Nazarenko, S. Nedosekin, A. Nellen, L. and Ng, F. Nicassio, M. Niculescu, M. Niedziela, J. Nielsen, B. S. Nikolaev, S. Nikulin, S. Nikulin, V. Noferini, F. and Nomokonov, P. Nooren, G. Noris, J. C. C. Norman, J. and Nyanin, A. Nystrand, J. Oeschler, H. Oh, S. Oh, S. K. and Ohlson, A. Okatan, A. Okubo, T. Olah, L. Oleniacz, J. Da Silva, A. C. Oliveira Oliver, M. H. Onderwaater, J. and Oppedisano, C. Orava, R. Velasquez, A. Ortiz Oskarsson, A. Otwinowski, J. Oyama, K. Ozdemir, M. Pachmayer, Y. and Pagano, P. Paic, G. Pal, S. K. Pan, J. Pandey, A. K. and Papcun, P. Papikyan, V. Pappalardo, G. S. Pareek, P. and Park, W. J. Parmar, S. Passfeld, A. Paticchio, V. Patra, R. N. Paul, B. Pei, H. Peitzmann, T. Da Costa, H. Pereira Peresunko, D. Lara, C. E. Perez Lezama, E. Perez and Peskov, V. Pestov, Y. Petracek, V. Petrov, V. Petrovici, M. Petta, C. Piano, S. Pikna, M. Pillot, P. and Pimentel, L. O. D. L. Pinazza, O. Pinsky, L. Piyarathna, D. B. Ploskon, M. Planinic, M. Pluta, J. Pochybova, S. and Podesta-Lerma, P. L. M. Poghosyan, M. G. Polichtchouk, B. and Poljak, N. Poonsawat, W. Pop, A. Porteboeuf-Houssais, S. and Porter, J. Pospisil, J. Prasad, S. K. Preghenella, R. and Prino, F. Pruneau, C. A. Pshenichnov, I. Puccio, M. and Puddu, G. Pujahari, P. Punin, V. Putschke, J. Qvigstad, H. Rachevski, A. Raha, S. Rajput, S. Rak, J. and Rakotozafindrabe, A. Ramello, L. Rami, F. Raniwala, R. and Raniwala, S. Rasanen, S. S. Rascanu, B. T. Rathee, D. and Read, K. F. Redlich, K. Reed, R. J. Rehman, A. Reichelt, P. Reidt, F. Ren, X. Renfordt, R. Reolon, A. R. and Reshetin, A. Revol, J. -P. Reygers, K. Riabov, V. Ricci, R. A. Richert, T. Richter, M. Riedler, P. Riegler, W. and Riggi, F. Ristea, C. Rocco, E. Rodriguez Cahuantzi, M. and Manso, A. Rodriguez Roed, K. Rogochaya, E. Rohr, D. and Rohrich, D. Romita, R. Ronchetti, F. Ronflette, L. and Rosnet, P. Rossi, A. Roukoutakis, F. Roy, A. Roy, C. and Roy, P. Rubio Montero, A. J. Rui, R. Russo, R. and Ryabinkin, E. Ryabov, Y. Rybicki, A. Sadovsky, S. and Safarik, K. Sahlmuller, B. Sahoo, P. Sahoo, R. Sahoo, S. and Sahu, P. K. Saini, J. Sakai, S. Saleh, M. A. and Salzwedel, J. Sambyal, S. Samsonov, V. Sandor, L. and Sandoval, A. Sano, M. Sarkar, D. Sarma, P. Scapparone, E. Scarlassara, F. Schiaua, C. Schicker, R. Schmidt, C. and Schmidt, H. R. Schuchmann, S. Schukraft, J. Schulc, M. and Schuster, T. Schutz, Y. Schwarz, K. Schweda, K. and Scioli, G. Scomparin, E. Scott, R. Sefcik, M. Seger, J. E. Sekiguchi, Y. Sekihata, D. Selyuzhenkov, I. Senosi, K. Senyukov, S. Serradilla, E. Sevcenco, A. Shabanov, A. and Shabetai, A. Shadura, O. Shahoyan, R. Shangaraev, A. and Sharma, A. Sharma, M. Sharma, M. Sharma, N. Shigaki, K. and Shtejer, K. Sibiriak, Y. Siddhanta, S. Sielewicz, K. M. and Siemiarczuk, T. Silvermyr, D. Silvestre, C. Simatovic, G. Simonetti, G. Singaraju, R. Singh, R. Singha, S. and Singhal, V. Sinha, B. C. Sinha, T. Sitar, B. Sitta, M. and Skaali, T. B. Slupecki, M. Smirnov, N. Snellings, R. J. M. Snellman, T. W. Sogaard, C. Song, J. Song, M. and Song, Z. Soramel, F. Sorensen, S. de Souza, R. D. Sozzi, F. Spacek, M. Spiriti, E. Sputowska, I. and Spyropoulou-Stassinaki, M. Stachel, J. Stan, I. Stankus, P. and Stefanek, G. Stenlund, E. Steyn, G. Stiller, J. H. and Stocco, D. Strmen, P. Suaide, A. A. P. Sugitate, T. and Suire, C. Suleymanov, M. Suljic, M. Sultanov, R. and Sumbera, M. Szabo, A. de Toledo, A. Szanto Szarka, I. and Szczepankiewicz, A. Szymanski, M. Tabassam, U. Takahashi, J. and Tambave, G. J. Tanaka, N. Tangaro, M. A. Tarhini, M. and Tariq, M. Tarzila, M. G. Tauro, A. Munoz, G. Tejeda and Telesca, A. Terasaki, K. Terrevoli, C. Teyssier, B. and Thader, J. Thomas, D. Tieulent, R. Timmins, A. R. Toia, A. Trogolo, S. Trombetta, G. Trubnikov, V. Trzaska, W. H. Tsuji, T. Tumkin, A. Turrisi, R. Tveter, T. S. and Ullaland, K. Uras, A. Usai, G. L. Utrobicic, A. Vajzer, M. Vala, M. Palomo, L. Valencia Vallero, S. Van der Maarel, J. Van Hoorne, J. W. Van Leeuwen, M. Vanat, T. and Vande Vyvre, P. Varga, D. Vargas, A. Vargyas, M. Varma, R. Vasileiou, M. Vasiliev, A. Vauthier, A. Vechernin, V. and Veen, A. M. Veldhoen, M. Velure, A. Venaruzzo, M. and Vercellin, E. Limon, S. Vergara Vernet, R. Verweij, M. and Vickovic, L. Viesti, G. Viinikainen, J. Vilakazi, Z. and Baillie, O. Villalobos Villatoro Tello, A. Vinogradov, A. and Vinogradov, L. Vinogradov, Y. Virgili, T. Vislavicius, V. and Viyogi, Y. P. Vodopyanov, A. Volkl, M. A. Voloshin, K. and Voloshin, S. A. Volpe, G. von Haller, B. Vorobyev, I. and Vranic, D. Vrlakova, J. Vulpescu, B. Wagner, B. and Wagner, J. Wang, H. Wang, M. Watanabe, D. Watanabe, Y. and Weber, M. Weber, S. G. Weiser, D. F. Wessels, J. P. and Westerhoff, U. Whitehead, A. M. Wiechula, J. Wikne, J. and Wilde, M. Wilk, G. Wilkinson, J. Williams, M. C. S. and Windelband, B. Winn, M. Yaldo, C. G. Yang, H. Yang, P. and Yano, S. Yasar, C. Yin, Z. Yokoyama, H. Yoo, I. -K. and Yoon, J. H. Yurchenko, V. Yushmanov, I. Zaborowska, A. and Zaccolo, V. Zaman, A. Zampolli, C. Zanoli, H. J. C. and Zaporozhets, S. Zardoshti, N. Zarochentsev, A. Zavada, P. and Zaviyalov, N. Zbroszczyk, H. Zgura, I. S. Zhalov, M. and Zhang, H. Zhang, X. Zhang, Y. Zhang, C. Zhang, Z. and Zhao, C. Zhigareva, N. Zhou, D. Zhou, Y. Zhou, Z. and Zhu, H. Zhu, J. Zichichi, A. Zimmermann, A. Zimmermann, M. B. Zinovjev, G. Zyzak, M. ALICE Collaboration ALICE Collaboration
Subjects: Nuclear Experiment
Abstract: We report on measurements of a charge-dependent flow using a novel three-particle correlator with ALICE in Pb-Pb collisions at the CERN Large Hadron Collider (LHC), and discuss the implications for observation of local parity violation and the chiral magnetic wave (CMW) in heavy-ion collisions. Charge-dependent flow is reported for different collision centralities as a function of the event charge asymmetry. While our results are in qualitative agreement with expectations based on the CMW, the nonzero signal observed in higher harmonics correlations indicates a possible significant background contribution. We also present results on a differential correlator, where the flow of positive and negative charges is reported as a function of the mean charge of the particles and their pseudorapidity separation. We argue that this differential correlator is better suited to distinguish the differences in positive and negative charges expected due to the CMW and the background effects, such as local charge conservation coupled with strong radial and anisotropic flow.
Published: 2016

26. Study of cosmic ray events with high muon multiplicity using the ALICE detector at the CERN Large Hadron Collider

Author: Adam, J. Adamova, D. Aggarwal, M. M. Rinella, G. Aglieri and Agnello, M. Agrawal, N. Ahammed, Z. Ahn, S. U. Aiola, S. and Akindinov, A. Alam, S. N. Aleksandrov, D. Alessandro, B. and Alexandre, D. Molina, R. Alfaro Alici, A. Alkin, A. and Almaraz, J. R. M. Alme, J. Alt, T. Altinpinar, S. and Altsybeev, I. Garcia Prado, C. Alves Andrei, C. Andronic, A. and Anguelov, V. Anielski, J. Anticic, T. Antinori, F. and Antonioli, P. Aphecetche, L. Appelshaeuser, H. Arcelli, S. and Armesto, N. Arnaldi, R. Arsene, I. C. Arslandok, M. and Audurier, B. Augustinus, A. Averbeck, R. Azmi, M. D. and Bach, M. Badala, A. Baek, Y. W. Bagnasco, S. Bailhache, R. Bala, R. Baldisseri, A. Baltasar Dos Santos Pedrosa, F. and Baral, R. C. Barbano, A. M. Barbera, R. Barile, F. and Barnafoeldi, G. G. Barnby, L. S. Barret, V. Bartalini, P. and Barth, K. Bartke, J. Bartsch, E. Basile, M. Bastid, N. Basu, S. Bathen, B. Batigne, G. Camejo, A. Batista and Batyunya, B. Batzing, P. C. Bearden, I. G. Beck, H. and Bedda, C. Belikov, I. Bellini, F. Bello Martinez, H. and Bellwied, R. Belmont, R. Belmont-Moreno, E. Belyaev, V. and Bencedi, G. Beole, S. Berceanu, I. Bercuci, A. and Berdnikov, Y. Berenyi, D. Bertens, R. A. Berzano, D. and Betev, L. Bhasin, A. Bhat, I. R. Bhati, A. K. and Bhattacharjee, B. Bhom, J. Bianchi, L. Bianchi, N. and Bianchin, C. Bielcik, J. Bielcikova, J. Bilandzic, A. and Biswas, R. Biswas, S. Bjelogrlic, S. Blair, J. T. and Blanco, F. Blau, D. Blume, C. Bock, F. Bogdanov, A. and Boggild, H. Boldizsar, L. Bombara, M. Book, J. Borel, H. and Borissov, A. Borri, M. Bossu, F. Botta, E. Boettger, S. Braun-Munzinger, P. Bregant, M. Breitner, T. Broker, T. A. Browning, T. A. Broz, M. Brucken, E. J. Bruna, E. and Bruno, G. E. Budnikov, D. Buesching, H. Bufalino, S. and Buncic, P. Busch, O. Buthelezi, Z. Butt, J. B. Buxton, J. T. Caffarri, D. Cai, X. Caines, H. Diaz, L. Calero and Caliva, A. Calvo Villar, E. Camerini, P. Carena, F. and Carena, W. Carnesecchi, F. Castellanos, J. Castillo Castro, A. J. Casula, E. A. R. Cavicchioli, C. Ceballos Sanchez, C. and Cepila, J. Cerello, P. Cerkala, J. Chang, B. and Chapeland, S. Chartier, M. Charvet, J. L. Chattopadhyay, S. and Chattopadhyay, S. Chelnokov, V. Cherney, M. Cheshkov, C. and Cheynis, B. Barroso, V. Chibante Chinellato, D. D. Cho, S. Chochula, P. Choi, K. Chojnacki, M. Choudhury, S. and Christakoglou, P. Christensen, C. H. Christiansen, P. Chujo, T. Chung, S. U. Chunhui, Z. Cicalo, C. Cifarelli, L. and Cindolo, F. Cleymans, J. Colamaria, F. Colella, D. and Collu, A. Colocci, M. Balbastre, G. Conesa Conesa del Valle, Z. Connors, M. E. Contreras, J. G. Cormier, T. M. and Morales, Y. Corrales Maldonado, I. Cortes Cortese, P. and Cosentino, M. R. Costa, F. Crochet, P. Albino, R. Cruz and Cuautle, E. Cunqueiro, L. Dahms, T. Dainese, A. Danu, A. and Das, D. Das, I. Das, S. Dash, A. Dash, S. De, S. and De Caro, A. de Cataldo, G. de Cuveland, J. De Falco, A. and De Gruttola, D. De Marco, N. 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Richter, M. Riedler, P. Riegler, W. and Riggi, F. Ristea, C. Rivetti, A. Rocco, E. Rodriguez Cahuantzi, M. Rodriguez Manso, A. Roed, K. Rogochaya, E. and Rohr, D. Roehrich, D. Romita, R. Ronchetti, F. and Ronflette, L. Rosnet, P. Rossi, A. Roukoutakis, F. Roy, A. Roy, C. Roy, P. Montero, A. J. Rubio Rui, R. and Russo, R. Ryabinkin, E. Ryabov, Y. Rybicki, A. Sadovsky, S. Safarik, K. Sahlmuller, B. Sahoo, P. Sahoo, R. and Sahoo, S. Sahu, P. K. Saini, J. Sakai, S. Saleh, M. A. and Salgado, C. A. Salzwedel, J. Sambyal, S. Samsonov, V. and Sandor, L. Sandoval, A. Sano, M. Sarkar, D. and Scapparone, E. Scarlassara, F. Scharenberg, R. P. Schiaua, C. Schicker, R. Schmidt, C. Schmidt, H. R. Schuchmann, S. Schukraft, J. Schulc, M. Schuster, T. Schutz, Y. and Schwarz, K. Schweda, K. Scioli, G. Scomparin, E. Scott, R. Seger, J. E. Sekiguchi, Y. Sekihata, D. Selyuzhenkov, I. Senosi, K. Seo, J. Serradilla, E. Sevcenco, A. and Shabanov, A. Shabetai, A. Shadura, O. Shahoyan, R. and Shangaraev, A. 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Watanabe, D. Watanabe, Y. Weber, M. Weber, S. G. Wessels, J. P. Westerhoff, U. Wiechula, J. Wikne, J. Wilde, M. Wilk, G. Wilkinson, J. Williams, M. C. S. and Windelband, B. Winn, M. Yaldo, C. G. Yang, H. Yang, P. Yano, S. Yasar, C. Yin, Z. Yokoyama, H. Yoo, I-K. and Yurchenko, V. Yushmanov, I. Zaborowska, A. Zaccolo, V. and Zaman, A. Zampolli, C. Zanoli, H. J. C. Zaporozhets, S. and Zardoshti, N. Zarochentsev, A. Zavada, P. Zaviyalov and Zbroszczyk, H. Zgura, I. S. Zhalov, M. Zhang, H. Zhang, X. Zhang, Y. Zhang, Z. Zhao, C. Zhigareva, N. Zhou, D. Zhou, Y. Zhou, Z. Zhu, H. Zhu, J. Zichichi, A. and Zimmermann, A. Zimmermann, M. B. Zinovjev, G. Zyzak, M. and ALICE Collaboration
Subjects: Physics::Instrumentation and Detectors, High Energy Physics::Experiment
Abstract: ALICE is one of four large experiments at the CERN Large Hadron Collider near Geneva, specially designed to study particle production in ultra-relativistic heavy-ion collisions. Located 52 meters underground with 28 meters of overburden rock, it has also been used to detect muons produced by cosmic ray interactions in the upper atmosphere. In this paper, we present the multiplicity distribution of these atmospheric muons and its comparison with Monte Carlo simulations. This analysis exploits the large size and excellent tracking capability of the ALICE Time Projection Chamber. A special emphasis is given to the study of high multiplicity events containing more than 100 reconstructed muons and corresponding to a muon areal density rho(mu) > 5.9 m(-2). Similar events have been studied in previous underground experiments such as ALEPH and DELPHI at LEP. While these experiments were able to reproduce the measured muon multiplicity distribution with Monte Carlo simulations at low and intermediate multiplicities, their simulations failed to describe the frequency of the highest multiplicity events. In this work we show that the high multiplicity events observed in ALICE stem from primary cosmic rays with energies above 10(16) eV and that the frequency of these events can be successfully described by assuming a heavy mass composition of primary cosmic rays in this energy range. The development of the resulting air showers was simulated using the latest version of QGSJET to model hadronic interactions. This observation places significant constraints on alternative, more exotic, production mechanisms for these events.
Published: 2016

27. Centrality Dependence of the Charged-Particle Multiplicity Density at Midrapidity in Pb-Pb Collisions at root(NN)-N-S=5.02 TeV

Author: Adam, J. Adamova, D. Aggarwal, M. M. Rinella, G. Aglieri and Agnello, M. Agrawal, N. Ahammed, Z. Ahmad, S. Ahn, S. U. and Aiola, S. Akindinov, A. Alam, S. N. Aleksandrov, D. and Alessandro, B. Alexandre, D. Alfaro Molina, R. Alici, A. and Alkin, A. Almaraz, J. R. M. Alme, J. Alt, T. Altinpinar, S. Altsybeev, I. Alves Garcia Prado, C. Andrei, C. and Andronic, A. Anguelov, V. Anticic, T. Antinori, F. and Antonioli, P. Aphecetche, L. Appelshaeuser, H. Arcelli, S. and Arnaldi, R. Arnold, O. W. Arsene, I. C. Arslandok, M. and Audurier, B. Augustinus, A. Averbeck, R. Azmi, M. D. and Badala, A. Baek, Y. W. Bagnasco, S. Bailhache, R. Bala, R. Balasubramanian, S. Baldisseri, A. Baral, R. C. and Barbano, A. M. Barbera, R. Barile, F. Barnafoldi, G. G. and Barnby, L. S. Barret, V. Bartalini, P. Barth, K. Bartke, J. Bartsch, E. Basile, M. Bastid, N. Basu, S. and Bathen, B. Batigne, G. Camejo, A. Batista Batyunya, B. and Batzing, P. C. Bearden, I. G. Beck, H. Bedda, C. Behera, N. K. Belikov, I. Bellini, F. Bello Martinez, H. and Bellwied, R. Belmont, R. Belmont-Moreno, E. Belyaev, V. and Benacek, P. Bencedi, G. Beole, S. Berceanu, I. Bercuci, A. Berdnikov, Y. Berenyi, D. Bertens, R. A. Berzano, D. and Betev, L. Bhasin, A. Bhat, I. R. Bhati, A. K. and Bhattacharjee, B. Bhom, J. Bianchi, L. Bianchi, N. and Bianchin, C. Bielcik, J. Bielcikova, J. Bilandzic, A. and Biro, G. Biswas, R. Biswas, S. Bjelogrlic, S. Blair, J. T. Blau, D. Blume, C. Bock, F. Bogdanov, A. Boggild, H. Boldizsar, L. Bombara, M. Book, J. Borel, H. and Borissov, A. Borri, M. Bossu, F. Botta, E. Bourjau, C. and Braun-Munzinger, P. Bregant, M. Breitner, T. Broker, T. A. Browning, T. A. Broz, M. Brucken, E. J. Bruna, E. and Bruno, G. E. Budnikov, D. Buesching, H. Bufalino, S. and Buncic, P. Busch, O. Buthelezi, Z. Butt, J. B. Buxton, J. T. Caffarri, D. Cai, X. Caines, H. Diaz, L. Calero and Caliva, A. Calvo Villar, E. Camerini, P. Carena, F. and Carena, W. Carnesecchi, F. Castellanos, J. Castillo Castro, A. J. Casula, E. A. R. Ceballos Sanchez, C. Cerello, P. and Cerkala, J. Chang, B. Chapeland, S. Chartier, M. and Charvet, J. L. Chattopadhyay, S. Chattopadhyay, S. Chauvin, A. Chelnokov, V. Cherney, M. Cheshkov, C. Cheynis, B. and Barroso, V. Chibante Chinellato, D. D. Cho, S. Chochula, P. Choi, K. Chojnacki, M. Choudhury, S. Christakoglou, P. Christensen, C. H. Christiansen, P. Chujo, T. Chung, S. U. Cicalo, C. Cifarelli, L. Cindolo, F. Cleymans, J. and Colamaria, F. Colella, D. Collu, A. Colocci, M. and Balbastre, G. Conesa del Valle, Z. Conesa Connors, M. E. and Contreras, J. G. Cormier, T. M. Morales, Y. Corrales Cortes Maldonado, I. Cortese, P. Cosentino, M. R. Costa, F. and Crochet, P. Cruz Albino, R. Cuautle, E. Cunqueiro, L. and Dahms, T. Dainese, A. Danisch, M. C. Danu, A. Das, D. and Das, I. Das, S. Dash, A. Dash, S. De, S. De Caro, A. de Cataldo, G. de Conti, C. de Cuveland, J. De Falco, A. De Gruttola, D. De Marco, N. De Pasquale, S. and Deisting, A. Deloff, A. Denes, E. Deplano, C. Dhankher, P. Di Bari, D. Di Mauro, A. Di Nezza, P. Diaz Corchero, M. A. Dietel, T. Dillenseger, P. Divia, R. Djuvsland, O. and Dobrin, A. Domenicis Gimenez, D. Doenigus, B. Dordic, O. and Drozhzhova, T. Dubey, A. K. Dubla, A. Ducroux, L. and Dupieux, P. Ehlers, R. J. Elia, D. Endress, E. Engel, H. and Epple, E. Erazmus, B. Erdemir, I. Erhardt, F. and Espagnon, B. Estienne, M. Esumi, S. Eum, J. Evans, D. and Evdokimov, S. Eyyubova, G. Fabbietti, L. Fabris, D. and Faivre, J. Fantoni, A. Fasel, M. Feldkamp, L. and Feliciello, A. Feofilov, G. Ferencei, J. Fernandez Tellez, A. Ferreiro, E. G. Ferretti, A. Festanti, A. Feuillard, V. J. G. Figiel, J. Figueredo, M. A. S. Filchagin, S. and Finogeev, D. Fionda, F. M. Fiore, E. M. Fleck, M. G. and Floris, M. Foertsch, S. Foka, P. Fokin, S. Fragiacomo, E. Francescon, A. Frankenfeld, U. Fronze, G. G. Fuchs, U. Furget, C. Furs, A. Girard, M. Fusco Gaardhoje, J. J. and Gagliardi, M. Gago, A. M. Gallio, M. 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Weber, S. G. Weiser, D. F. Wessels, J. P. and Westerhoff, U. Whitehead, A. M. Wiechula, J. Wikne, J. and Wilk, G. Wilkinson, J. Williams, M. C. S. Windelband, B. and Winn, M. Yang, H. Yang, P. Yano, S. Yasar, C. Yin, Z. Yokoyama, H. Yoo, I. -K. Yoon, J. H. Yurchenko, V. and Yushmanov, I. Zaborowska, A. Zaccolo, V. Zaman, A. and Zampolli, C. Zanoli, H. J. C. Zaporozhets, S. Zardoshti, N. and Zarochentsev, A. Zavada, P. Zaviyalov, N. Zbroszczyk, H. and Zgura, I. S. Zhalov, M. Zhang, H. Zhang, X. Zhang, Y. Zhang, C. Zhang, Z. Zhao, C. Zhigareva, N. Zhou, D. Zhou, Y. Zhou, Z. Zhu, H. Zhu, J. Zichichi, A. and Zimmermann, A. Zimmermann, M. B. Zinovjev, G. Zyzak, M. and ALICE Collaboration
Subjects: Nuclear Experiment
Abstract: The pseudorapidity density of charged particles, dN(ch)=d eta, at midrapidity in Pb-Pb collisions has been measured at a center-of-mass energy per nucleon pair of root(NN)-N-s p = 5.02 TeV. For the 5% most central collisions, we measure a value of 1943 +/- 54. The rise in dNch= d. as a function of root(NN)-N-s p is steeper than that observed in proton-proton collisions and follows the trend established by measurements at lower energy. The increase of dNch= d. as a function of the average number of participant nucleons, hNparti, calculated in a Glauber model, is compared with the previous measurement at root(NN)-N-s p = 2.76 TeV. A constant factor of about 1.2 describes the increase in dNch= d. from root(NN)-N-s p = 2.76 to 5.02 TeV for all centrality classes, within the measured range of 0%-80% centrality. The results are also compared to models based on different mechanisms for particle production in nuclear collisions.
Published: 2016

28. Multipion Bose-Einstein correlations in pp, p-Pb, and Pb-Pb collisions at energies available at the CERN Large Hadron Collider

Author: Adam, J. Adamova, D. Aggarwal, M. M. Rinella, G. Aglieri and Agnello, M. Agrawal, N. Ahammed, Z. Ahmad, S. Ahn, S. U. and Aiola, S. Akindinov, A. Alam, S. N. Aleksandrov, D. and Alessandro, B. Alexandre, D. Molina, R. Alfaro Alici, A. and Alkin, A. Almaraz, J. R. M. Alme, J. Alt, T. Altinpinar, S. Altsybeev, I. Prado, C. Alves Garcia Andrei, C. and Andronic, A. Anguelov, V. Anticic, T. Antinori, F. and Antonioli, P. Aphecetche, L. Appelshaeuser, H. Arcelli, S. and Arnaldi, R. Arnold, O. W. Arsene, I. C. Arslandok, M. and Audurier, B. Augustinus, A. Averbeck, R. Azmi, M. D. and Badala, A. Baek, Y. W. Bagnasco, S. Bailhache, R. Bala, R. Balasubramanian, S. Baldisseri, A. Baral, R. C. and Barbano, A. M. Barbera, R. Barile, F. Barnafoeldi, G. G. and Barnby, L. S. Barret, V. Bartalini, P. Barth, K. Bartke, J. Bartsch, E. Basile, M. Bastid, N. Basu, S. and Bathen, B. Batigne, G. Camejo, A. Batista Batyunya, B. and Batzing, P. C. Bearden, I. G. Beck, H. Bedda, C. Behera, N. K. Belikov, I. Bellini, F. Martinez, H. Bello and Bellwied, R. Belmont, R. Belmont-Moreno, E. Belyaev, V. and Benacek, P. Bencedi, G. Beole, S. Berceanu, I. Bercuci, A. Berdnikov, Y. Berenyi, D. Bertens, R. A. Berzano, D. and Betev, L. Bhasin, A. Bhat, I. R. Bhati, A. K. and Bhattacharjee, B. Bhom, J. Bianchi, L. Bianchi, N. and Bianchin, C. Bielcik, J. Bielcikova, J. Bilandzic, A. and Biro, G. Biswas, R. Biswas, S. Bjelogrlic, S. Blair, J. T. Blau, D. Blume, C. Bock, F. Bogdanov, A. Boggild, H. Boldizsar, L. Bombara, M. Book, J. Borel, H. and Borissov, A. Borri, M. Bossu, F. Botta, E. Bourjau, C. and Braun-Munzinger, P. Bregant, M. Breitner, T. Broker, T. A. Browning, T. A. Broz, M. Brucken, E. J. Bruna, E. and Bruno, G. E. Budnikov, D. Buesching, H. Bufalino, S. and Buncic, P. Busch, O. Buthelezi, Z. Butt, J. B. Buxton, J. T. Caffarri, D. Cai, X. Caines, H. Diaz, L. Calero and Caliva, A. Villar, E. Calvo Camerini, P. Carena, F. and Carena, W. Carnesecchi, F. Castellanos, J. Castillo Castro, A. J. Casula, E. A. R. Sanchez, C. Ceballos Cerello, P. and Cerkala, J. Chang, B. Chapeland, S. Chartier, M. and Charvet, J. L. Chattopadhyay, S. Chattopadhyay, S. Chauvin, A. Chelnokov, V. Cherney, M. Cheshkov, C. Cheynis, B. and Barroso, V. Chibante Chinellato, D. D. Cho, S. Chochula, P. Choi, K. Chojnacki, M. Choudhury, S. Christakoglou, P. Christensen, C. H. Christiansen, P. Chujo, T. Chung, S. U. Cicalo, C. Cifarelli, L. Cindolo, F. Cleymans, J. and Colamaria, F. Colella, D. Collu, A. Colocci, M. and Balbastre, G. Conesa del Valle, Z. Conesa Connors, M. E. and Contreras, J. G. Cormier, T. M. Morales, Y. Corrales and Maldonado, I. Cortes Cortese, P. Cosentino, M. R. Costa, F. and Crochet, P. Albino, R. Cruz Cuautle, E. Cunqueiro, L. and Dahms, T. Dainese, A. Danisch, M. C. Danu, A. Das, D. Das, I. Das, S. Dash, A. Dash, S. De, S. De Caro, A. de Cataldo, G. de Conti, C. de Cuveland, J. De Falco, A. De Gruttola, D. De Marco, N. De Pasquale, S. and Deisting, A. Deloff, A. Denes, E. Deplano, C. Dhankher, P. Di Bari, D. Di Mauro, A. Di Nezza, P. Corchero, M. A. Diaz Dietel, T. Dillenseger, P. Divia, R. Djuvsland, O. and Dobrin, A. Gimenez, D. Domenicis Doenigus, B. Dordic, O. and Drozhzhova, T. Dubey, A. K. Dubla, A. Ducroux, L. and Dupieux, P. Ehlers, R. J. Elia, D. Endress, E. Engel, H. and Epple, E. Erazmus, B. Erdemir, I. Erhardt, F. and Espagnon, B. Estienne, M. Esumi, S. Eum, J. Evans, D. and Evdokimov, S. Eyyubova, G. Fabbietti, L. Fabris, D. and Faivre, J. Fantoni, A. Fasel, M. Feldkamp, L. and Feliciello, A. Feofilov, G. Ferencei, J. Tellez, A. Fernandez Ferreiro, E. G. Ferretti, A. Festanti, A. and Feuillard, V. J. G. Figiel, J. Figueredo, M. A. S. and Filchagin, S. Finogeev, D. Fionda, F. M. Fiore, E. M. and Fleck, M. G. Floris, M. Foertsch, S. Foka, P. Fokin, S. and Fragiacomo, E. Francescon, A. Frankenfeld, U. Fronze, G. G. Fuchs, U. Furget, C. Furs, A. Girard, M. Fusco and Gaardhoje, J. J. Gagliardi, M. Gago, A. M. 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Lopez Lowe, A. and Luettig, P. Lunardon, M. Luparello, G. Lutz, T. H. and Maevskaya, A. Mager, M. Mahajan, S. Mahmood, S. M. and Maire, A. Majka, R. D. Malaev, M. Cervantes, I. Maldonado and Malinina, L. Mal'Kevich, D. Malzacher, P. Mamonov, A. and Manko, V. Manso, F. Manzari, V. Marchisone, M. and Mares, J. Margagliotti, G. V. Margotti, A. Margutti, J. and Marin, A. Markert, C. Marquard, M. Martin, N. A. Blanco, J. Martin Martinengo, P. Martinez, M. I. Garcia, G. Martinez and Pedreira, M. Martinez Mas, A. Masciocchi, S. Masera, M. and Masoni, A. Massacrier, L. Mastroserio, A. Matyja, A. and Mayer, C. Mazer, J. Mazzoni, M. A. Mcdonald, D. Meddi, F. Melikyan, Y. Menchaca-Rocha, A. Meninno, E. Perez, J. Mercado Meres, M. Miake, Y. Mieskolainen, M. M. and Mikhaylov, K. Milano, L. Milosevic, J. Minervini, L. M. and Mischke, A. Mishra, A. N. Miskowiec, D. Mitra, J. Mitu, C. M. Mohammadi, N. Mohanty, B. Molnar, L. Zetina, L. Montano Montes, E. De Godoy, D. A. Moreira Moreno, L. A. P. and Moretto, S. Morreale, A. Morsch, A. Muccifora, V. and Mudnic, E. Muehlheim, D. Muhuri, S. Mukherjee, M. and Mulligan, J. D. Munhoz, M. G. Munzer, R. H. Murakami, H. and Murray, S. Musa, L. Musinsky, J. Naik, B. Nair, R. and Nandi, B. K. Nania, R. Nappi, E. Naru, M. U. da Luz, H. Natal Nattrass, C. Navarro, S. R. Nayak, K. Nayak, R. and Nayak, T. K. Nazarenko, S. Nedosekin, A. Nellen, L. and Ng, F. Nicassio, M. Niculescu, M. Niedziela, J. Nielsen, B. S. Nikolaev, S. Nikulin, S. Nikulin, V. Noferini, F. and Nomokonov, P. Nooren, G. Noris, J. C. C. Norman, J. and Nyanin, A. Nystrand, J. Oeschler, H. Oh, S. Oh, S. K. and Ohlson, A. Okatan, A. Okubo, T. Olah, L. Oleniacz, J. Da Silva, A. C. Oliveira Oliver, M. H. Onderwaater, J. and Oppedisano, C. Orava, R. Velasquez, A. Ortiz Oskarsson, A. Otwinowski, J. Oyama, K. Ozdemir, M. Pachmayer, Y. and Pagano, P. Paic, G. Pal, S. K. Pan, J. Pandey, A. K. and Papikyan, V. Pappalardo, G. S. Pareek, P. Park, W. J. and Parmar, S. Passfeld, A. 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Terrevoli, C. Teyssier, B. and Thaeder, J. Thomas, D. Tieulent, R. Timmins, A. R. Toia, A. Trogolo, S. Trombetta, G. Trubnikov, V. Trzaska, W. H. Tsuji, T. Tumkin, A. Turrisi, R. Tveter, T. S. and Ullaland, K. Uras, A. Usai, G. L. Utrobicic, A. Vajzer, M. Vala, M. Palomo, L. Valencia Vallero, S. Van Der Maarel, J. Van Hoorne, J. W. van Leeuwen, M. Vanat, T. and Vande Vyvre, P. Varga, D. Vargas, A. Vargyas, M. Varma, R. Vasileiou, M. Vasiliev, A. Vauthier, A. Vechernin, V. and Veen, A. M. Veldhoen, M. Velure, A. Venaruzzo, M. and Vercellin, E. Limon, S. Vergara Vernet, R. Verweij, M. and Vickovic, L. Viesti, G. Viinikainen, J. Vilakazi, Z. and Baillie, O. Villalobos Tello, A. Villatoro Vinogradov, A. and Vinogradov, L. Vinogradov, Y. Virgili, T. Vislavicius, V. and Viyogi, Y. P. Vodopyanov, A. Voelkl, M. A. Voloshin, K. and Voloshin, S. A. Volpe, G. von Haller, B. Vorobyev, I. and Vranic, D. Vrlakova, J. Vulpescu, B. Wagner, B. and Wagner, J. Wang, H. Wang, M. Watanabe, D. Watanabe, Y. and Weber, M. Weber, S. G. Weiser, D. F. Wessels, J. P. and Westerhoff, U. Whitehead, A. M. Wiechula, J. Wikne, J. and Wilk, G. Wilkinson, J. Williams, M. C. S. Windelband, B. and Winn, M. Yang, H. Yang, P. Yano, S. Yasin, Z. Yin, Z. Yokoyama, H. Yoo, I. -K. Yoon, J. H. Yurchenko, V. and Yushmanov, I. Zaborowska, A. Zaccolo, V. Zaman, A. and Zampolli, C. Zanoli, H. J. C. Zaporozhets, S. Zardoshti, N. and Zarochentsev, A. Zavada, P. Zaviyalov, N. Zbroszczyk, H. and Zgura, I. S. Zhalov, M. Zhang, H. Zhang, X. Zhang, Y. Zhang, C. Zhang, Z. Zhao, C. Zhigareva, N. Zhou, D. Zhou, Y. Zhou, Z. Zhu, H. Zhu, J. Zichichi, A. and Zimmermann, A. Zimmermann, M. B. Zinovjev, G. Zyzak, M. and ALICE Collaboration
Subjects: Nuclear Experiment
Abstract: Three- and four-pionBose-Einstein correlations are presented in pp, p-Pb, and Pb-Pb collisions at the LHC. We compare our measured four-pion correlations to the expectation derived from two-and three-pion measurements. Such a comparison provides a method to search for coherent pion emission. We also present mixed-charge correlations in order to demonstrate the effectiveness of several analysis procedures such as Coulomb corrections. Same-charge four-pion correlations in pp and p-Pb appear consistent with the expectations from three-pion measurements. However, the presence of non-negligible background correlations in both systems prevent a conclusive statement. In Pb-Pb collisions, we observe a significant suppression of three-and four-pion Bose-Einstein correlations compared to expectations from two-pionmeasurements. There appears to be no centrality dependence of the suppression within the 0%-50% centrality interval. The origin of the suppression is not clear. However, by postulating either coherent pion emission or large multibody Coulomb effects, the suppression may be explained.
Published: 2016

29. Elliptic flow of electrons from heavy-flavour hadron decays at mid-rapidity in Pb-Pb collisions at root s(NN)=2.76 TeV

Author: Adam, J. Adamova, D. Aggarwal, M. M. Rinella, G. Aglieri and Agnello, M. Agrawal, N. Ahammed, Z. Ahmad, S. Ahn, S. U. and Aiola, S. Akindinov, A. Alam, S. N. Albuquerque, D. S. D. Aleksandrov, D. Alessandro, B. Alexandre, D. Alfaro Molina, R. Alici, A. Alkin, A. Alme, J. Alt, T. and Altinpinar, S. Altsybeev, I. Alves Garcia Prado, C. Andrei, C. Andronic, A. Anguelov, V. Anticic, T. Antinori, F. and Antonioli, P. Aphecetche, L. Appelshaeuser, H. Arcelli, S. Arnaldi, R. Arnold, O. W. Arsene, I. C. Arslandok, M. and Audurier, B. Augustinus, A. Averbeck, R. Azmi, M. D. and Badala, A. Baek, Y. W. Bagnasco, S. Bailhache, R. Bala, R. Balasubramanian, S. Baldisseri, A. Baral, R. C. and Barbano, A. M. Barbera, R. Barile, F. Barnafoldi, G. G. and Barnby, L. S. Barret, V. Bartalini, P. Barth, K. Bartke, J. Bartsch, E. Basile, M. Bastid, N. Basu, S. and Bathen, B. Batigne, G. Camejo, A. Batista Batyunya, B. and Batzing, P. C. Bearden, I. G. Beck, H. Bedda, C. Behera, N. K. Belikov, I. Bellini, F. Bello Martinez, H. and Bellwied, R. Belmont, R. Belmont-Moreno, E. Beltran, L. G. E. Belyaev, V. Bencedi, G. Beole, S. Berceanu, I. and Bercuci, A. Berdnikov, Y. Berenyi, D. Bertens, R. A. and Berzano, D. Betev, L. Bhasin, A. Bhat, I. R. Bhati, A. K. Bhattacharjee, B. Bhom, J. Bianchi, L. Bianchi, N. and Bianchin, C. Bielcik, J. Bielcikova, J. Bilandzic, A. and Biro, G. Biswas, R. Biswas, S. Bjelogrlic, S. Blair, J. T. Blau, D. Blume, C. Bock, F. Bogdanov, A. and Boggild, H. Boldizsar, L. Bombara, M. Bonora, M. Book, J. Borel, H. Borissov, A. Borri, M. Bossu, F. Botta, E. Bourjau, C. Braun-Munzinger, P. Bregant, M. Breitner, T. Broker, T. A. Browning, T. A. Broz, M. Brucken, E. J. and Bruna, E. Bruno, G. E. Budnikov, D. Buesching, H. and Bufalino, S. Buncic, P. Busch, O. Buthelezi, Z. Butt, J. B. Buxton, J. T. Cabala, J. Caffarri, D. Cai, X. and Caines, H. Diaz, L. Calero Caliva, A. Calvo Villar, E. and Camerini, P. Carena, F. Carena, W. Carnesecchi, F. and Castellanos, J. 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Wang, H. Wang, M. Watanabe, D. and Watanabe, Y. Weber, M. Weber, S. G. Weiser, D. F. and Wessels, J. P. Westerhoff, U. Whitehead, A. M. Wiechula, J. and Wikne, J. Wilk, G. Wilkinson, J. Willems, G. A. and Williams, M. C. S. Windelband, B. Winn, M. Yalcin, S. and Yang, P. Yano, S. Yin, Z. Yokoyama, H. Yoo, I. -K. and Yoon, J. H. Yurchenko, V. Zaborowska, A. Zaccolo, V. and Zaman, A. Zampolli, C. Zanoli, H. J. C. Zaporozhets, S. and Zardoshti, N. Zarochentsev, A. Zavada, P. Zaviyalov, N. and Zbroszczyk, H. Zgura, I. S. Zhalov, M. Zhang, H. Zhang, X. Zhang, Y. Zhang, C. Zhang, Z. Zhao, C. Zhigareva, N. Zhou, D. Zhou, Y. Zhou, Z. Zhu, H. Zhu, J. and Zichichi, A. Zimmermann, A. Zimmermann, M. B. Zinovjev, G. and Zyzak, M. ALICE Collaboration
Subjects: High Energy Physics::Phenomenology, High Energy Physics::Experiment, Nuclear Experiment
Abstract: The elliptic flow of electrons from heavy-flavour hadron decays at mid-rapidity (|y| < 0.7) is measured in Pb-Pb collisions at TeV with ALICE at the LHC. The particle azimuthal distribution with respect to the reaction plane can be parametrized with a Fourier expansion, where the second coefficient (v (2)) represents the elliptic flow. The v (2) coefficient of inclusive electrons is measured in three centrality classes (0-10%, 10-20% and 20-40%) with the event plane and the scalar product methods in the transverse momentum (p (T)) intervals 0.5-13 GeV/c and 0.5-8 GeV/c, respectively. After subtracting the background, mainly from photon conversions and Dalitz decays of neutral mesons, a positive v (2) of electrons from heavy-flavour hadron decays is observed in all centrality classes, with a maximum significance of 5.9 sigma in the interval 2 < p (T) < 2.5 GeV/c in semi-central collisions (20-40%). The value of v (2) decreases towards more central collisions at low and intermediate p (T) (0.5 < p (T) < 3 GeV/c). The v (2) of electrons from heavy-flavour hadron decays at mid-rapidity is found to be similar to the one of muons from heavy-flavour hadron decays at forward rapidity (2.5 < y < 4). The results are described within uncertainties by model calculations including substantial elastic interactions of heavy quarks with an expanding strongly-interacting medium.
Published: 2016

30. Correlated Event-by-Event Fluctuations of Flow Harmonics in Pb-Pb Collisions at root S-NN=2.76 TeV

Author: Adam, J. Adamova, D. Aggarwal, M. M. Rinella, G. Aglieri and Agnello, M. Agrawal, N. Ahammed, Z. Ahmad, S. Ahn, S. U. and Aiola, S. Akindinov, A. Alam, S. N. Albuquerque, D. S. D. Aleksandrov, D. Alessandro, B. Alexandre, D. Alfaro Molina, R. Alici, A. Alkin, A. Almaraz, J. R. M. Alme, J. Alt, T. Altinpinar, S. Altsybeev, I. Alves Garcia Prado, C. Andrei, C. Andronic, A. Anguelov, V. Anticic, T. Antinori, F. Antonioli, P. Aphecetche, L. and Appelshaeuser, H. Arcelli, S. Arnaldi, R. Arnold, O. W. and Arsene, I. C. Arslandok, M. Audurier, B. Augustinus, A. and Averbeck, R. Azmi, M. D. Badala, A. Baek, Y. W. and Bagnasco, S. Bailhache, R. Bala, R. Balasubramanian, S. and Baldisseri, A. Baral, R. C. Barbano, A. M. Barbera, R. and Barile, F. Barnafoldi, G. G. Barnby, L. S. Barret, V. and Bartalini, P. Barth, K. Bartke, J. Bartsch, E. Basile, M. Bastid, N. Basu, S. Bathen, B. Batigne, G. and Camejo, A. Batista Batyunya, B. Batzing, P. C. Bearden, I. G. Beck, H. Bedda, C. Behera, N. K. Belikov, I. and Bellini, F. Bello Martinez, H. Bellwied, R. Belmont, R. and Belmont-Moreno, E. Beltran, L. G. E. Belyaev, V. Bencedi, G. and Beole, S. Berceanu, I. Bercuci, A. Berdnikov, Y. and Berenyi, D. Bertens, R. A. Berzano, D. Betev, L. Bhasin, A. Bhat, I. R. Bhati, A. K. Bhattacharjee, B. Bhom, J. and Bianchi, L. Bianchi, N. Bianchin, C. Bielcik, J. and Bielcikova, J. Bilandzic, A. Biro, G. Biswas, R. Biswas, S. Bjelogrlic, S. Blair, J. T. Blau, D. Blume, C. and Bock, F. Bogdanov, A. Boggild, H. Boldizsar, L. Bombara, M. Book, J. Borel, H. Borissov, A. Borri, M. Bossu, F. Botta, E. Bourjau, C. Braun-Munzinger, P. Bregant, M. and Breitner, T. Broker, T. A. Browning, T. A. Broz, M. and Brucken, E. J. Bruna, E. Bruno, G. E. Budnikov, D. and Buesching, H. Bufalino, S. Buncic, P. Busch, O. and Buthelezi, Z. Butt, J. B. Buxton, J. T. Cabala, J. and Caffarri, D. Cai, X. Caines, H. Diaz, L. Calero Caliva, A. Calvo Villar, E. Camerini, P. Carena, F. Carena, W. and Carnesecchi, F. 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Lippmann, C. and Lisa, M. A. Ljunggren, H. M. Lodato, D. F. Loenne, P. I. and Loginov, V. Loizides, C. Lopez, X. Lopez Torres, E. and Lowe, A. Luettig, P. Lunardon, M. Luparello, G. Lutz, T. H. Maevskaya, A. Mager, M. Mahajan, S. Mahmood, S. M. and Maire, A. Majka, R. D. Malaev, M. Maldonado Cervantes, I. Malinina, L. Mal'Kevich, D. Malzacher, P. Mamonov, A. and Manko, V. Manso, F. Manzari, V. Marchisone, M. and Mares, J. Margagliotti, G. V. Margotti, A. Margutti, J. and Marin, A. Markert, C. Marquard, M. Martin, N. A. Blanco, J. Martin Martinengo, P. Martinez, M. I. Garcia, G. Martinez and Pedreira, M. Martinez Mas, A. Masciocchi, S. Masera, M. and Masoni, A. Mastroserio, A. Matyja, A. Mayer, C. and Mazer, J. Mazzoni, M. A. Mcdonald, D. Meddi, F. and Melikyan, Y. Menchaca-Rocha, A. Meninno, E. Perez, J. Mercado Meres, M. Miake, Y. Mieskolainen, M. M. and Mikhaylov, K. Milano, L. Milosevic, J. Mischke, A. and Mishra, A. N. Miskowiec, D. Mitra, J. Mitu, C. M. and Mohammadi, N. Mohanty, B. Molnar, L. Montano Zetina, L. and Montes, E. De Godoy, D. A. Moreira Moreno, L. A. P. Moretto, S. Morreale, A. Morsch, A. Muccifora, V. Mudnic, E. and Muehlheim, D. Muhuri, S. Mukherjee, M. Mulligan, J. D. and Munhoz, M. G. Muenning, K. Munzer, R. H. Murakami, H. and Murray, S. Musa, L. Musinsky, J. Naik, B. Nair, R. and Nandi, B. K. Nania, R. Nappi, E. Naru, M. U. Natal da Luz, H. Nattrass, C. Navarro, S. R. Nayak, K. Nayak, R. and Nayak, T. K. Nazarenko, S. Nedosekin, A. Nellen, L. and Ng, F. Nicassio, M. Niculescu, M. Niedziela, J. Nielsen, B. S. Nikolaev, S. Nikulin, S. Nikulin, V. Noferini, F. and Nomokonov, P. Nooren, G. Noris, J. C. C. Norman, J. and Nyanin, A. Nystrand, J. Oeschler, H. Oh, S. Oh, S. K. and Ohlson, A. Okatan, A. Okubo, T. Oleniacz, J. and Oliveira Da Silva, A. C. Oliver, M. H. Onderwaater, J. and Oppedisano, C. Orava, R. Oravec, M. Ortiz Velasquez, A. and Oskarsson, A. Otwinowski, J. Oyama, K. Ozdemir, M. and Pachmayer, Y. Pagano, D. Pagano, P. Paic, G. Pal, S. K. and Pan, J. Pandey, A. K. Papikyan, V. Pappalardo, G. S. and Pareek, P. Park, W. J. Parmar, S. Passfeld, A. and Paticchio, V. Patra, R. N. Paul, B. Pei, H. Peitzmann, T. Peng, X. Da Costa, H. Pereira Peresunko, D. Lezama, E. Perez Peskov, V. Pestov, Y. Petracek, V. Petrov, V. and Petrovici, M. Petta, C. Piano, S. Pikna, M. Pillot, P. Pimentel, L. O. D. L. Pinazza, O. Pinsky, L. and Piyarathna, D. B. Ploskon, M. Planinic, M. Pluta, J. and Pochybova, S. Podesta-Lerma, P. L. M. Poghosyan, M. G. and Polichtchouk, B. Poljak, N. Poonsawat, W. Pop, A. and Poppenborg, H. Porteboeuf-Houssais, S. Porter, J. Pospisil, J. Prasad, S. K. Preghenella, R. Prino, F. Pruneau, C. A. Pshenichnov, I. Puccio, M. Puddu, G. Pujahari, P. and Punin, V. Putschke, J. Qvigstad, H. Rachevski, A. Raha, S. Rajput, S. Rak, J. Rakotozafindrabe, A. Ramello, L. and Rami, F. Raniwala, R. Raniwala, S. Rasanen, S. S. and Rascanu, B. T. Rathee, D. Read, K. F. Redlich, K. Reed, R. J. Rehman, A. Reichelt, P. Reidt, F. Ren, X. and Renfordt, R. Reolon, A. R. Reshetin, A. Reygers, K. and Riabov, V. Ricci, R. A. Richert, T. Richter, M. Riedler, P. Riegler, W. Riggi, F. Ristea, C. Rocco, E. and Rodriguez Cahuantzi, M. Manso, A. Rodriguez Roed, K. and Rogochaya, E. Rohr, D. Rohrich, D. Ronchetti, F. and Ronflette, L. Rosnet, P. Rossi, A. Roukoutakis, F. Roy, A. Roy, C. Roy, P. Rubio Montero, A. J. Rui, R. and Russo, R. Ryabinkin, E. Ryabov, Y. Rybicki, A. Saarinen, S. Sadhu, S. Sadovsky, S. Safarik, K. Sahlmuller, B. and Sahoo, P. Sahoo, R. Sahoo, S. Sahu, P. K. Saini, J. and Sakai, S. Saleh, M. A. Salzwedel, J. Sambyal, S. and Samsonov, V. Sandor, L. Sandoval, A. Sano, M. Sarkar, D. and Sarkar, N. Sarma, P. Scapparone, E. Scarlassara, F. and Schiaua, C. Schicker, R. Schmidt, C. Schmidt, H. R. and Schmidt, M. Schuchmann, S. Schukraft, J. Schulc, M. and Schutz, Y. Schwarz, K. Schweda, K. Scioli, G. Scomparin, E. Scott, R. Sefcik, M. Seger, J. E. Sekiguchi, Y. and Sekihata, D. Selyuzhenkov, I. Senosi, K. Senyukov, S. and Serradilla, E. Sevcenco, A. Shabanov, A. Shabetai, A. and Shadura, O. Shahoyan, R. Shahzad, M. I. Shangaraev, A. and Sharma, A. Sharma, M. Sharma, N. Sheikh, A. I. Shigaki, K. Shou, Q. Shtejer, K. Sibiriak, Y. Siddhanta, S. and Sielewicz, K. M. Siemiarczuk, T. Silvermyr, D. Silvestre, C. and Simatovic, G. Simonetti, G. Singaraju, R. Singh, R. and Singhal, V. Sinha, T. Sitar, B. Sitta, M. Skaali, T. B. and Slupecki, M. Smirnov, N. Snellings, R. J. M. Snellman, T. W. Song, J. Song, M. Song, Z. Soramel, F. and Sorensen, S. Sozzi, F. Spacek, M. Spiriti, E. Sputowska, I. Spyropoulou-Stassinaki, M. Stachel, J. Stan, I. and Stankus, P. Stenlund, E. Steyn, G. Stiller, J. H. and Stocco, D. Strmen, P. Suaide, A. A. P. Sugitate, T. and Suire, C. Suleymanov, M. Suljic, M. Sultanov, R. and Sumbera, M. Sumowidagdo, S. Szabo, A. Szarka, I. and Szczepankiewicz, A. Szymanski, M. Tabassam, U. Takahashi, J. and Tambave, G. J. Tanaka, N. Tarhini, M. Tariq, M. and Tarzila, M. G. Tauro, A. Tejeda Munoz, G. Telesca, A. and Terasaki, K. Terrevoli, C. Teyssier, B. Thader, J. and Thakur, D. Thomas, D. Tieulent, R. Tikhonov, A. Timmins, A. R. Toia, A. Trogolo, S. Trombetta, G. Trubnikov, V. and Trzaska, W. H. Tsuji, T. Tumkin, A. Turrisi, R. and Tveter, T. S. Ullaland, K. Uras, A. Usai, G. L. and Utrobicic, A. Vala, M. Palomo, L. Valencia Vallero, S. and Van Der Maarel, J. Van Hoorne, J. W. van Leeuwen, M. Vanat, T. Vande Vyvre, P. Varga, D. Vargas, A. Vargyas, M. and Varma, R. Vasileiou, M. Vasiliev, A. Vauthier, A. Doce, O. Vazquez Vechernin, V. Veen, A. M. Veldhoen, M. and Velure, A. Vercellin, E. Vergara Limon, S. Vernet, R. and Verweij, M. Vickovic, L. Viinikainen, J. Vilakazi, Z. and Baillie, O. Villalobos Villatoro Tello, A. Vinogradov, A. and Vinogradov, L. Vinogradov, Y. Virgili, T. Vislavicius, V. and Viyogi, Y. P. Vodopyanov, A. Voelkl, M. A. Voloshin, K. and Voloshin, S. A. Volpe, G. von Haller, B. Vorobyev, I. and Vranic, D. Vrlakova, J. Vulpescu, B. Wagner, B. and Wagner, J. Wang, H. Wang, M. Watanabe, D. Watanabe, Y. and Weber, M. Weber, S. G. Weiser, D. F. Wessels, J. P. and Westerhoff, U. Whitehead, A. M. Wiechula, J. Wikne, J. and Wilk, G. Wilkinson, J. Williams, M. C. S. Windelband, B. and Winn, M. Yang, P. Yano, S. Yasin, Z. Yin, Z. and Yokoyama, H. Yoo, I. -K. Yoon, J. H. Yurchenko, V. and Zaborowska, A. Zaccolo, V. Zaman, A. Zampolli, C. and Zanoli, H. J. C. Zaporozhets, S. Zardoshti, N. Zarochentsev, A. Zavada, P. Zaviyalov, N. Zbroszczyk, H. Zgura, I. S. and Zhalov, M. Zhang, H. Zhang, X. Zhang, Y. Zhang, C. and Zhang, Z. Zhao, C. Zhigareva, N. Zhou, D. Zhou, Y. and Zhou, Z. Zhu, H. Zhu, J. Zichichi, A. Zimmermann, A. and Zimmermann, M. B. Zinovjev, G. Zyzak, M. ALICE Collaboration
Subjects: Nuclear Experiment
Abstract: We report the measurements of correlations between event-by-event fluctuations of amplitudes of anisotropic flow harmonics in nucleus-nucleus collisions, obtained for the first time using a new analysis method based on multiparticle cumulants in mixed harmonics. This novel method is robust against systematic biases originating from nonflow effects and by construction any dependence on symmetry planes is eliminated. We demonstrate that correlations of flow harmonics exhibit a better sensitivity to medium properties than the individual flow harmonics. The new measurements are performed in Pb-Pb collisions at the center-of-mass energy per nucleon pair of root S-NN = 2.76 TeV by the ALICE experiment at the Large Hadron Collider. The centrality dependence of correlation between event-by-event fluctuations of the elliptic v(2) and quadrangular v(4) flow harmonics, as well as of anticorrelation between v(2) and triangular v(3) flow harmonics are presented. The results cover two different regimes of the initial state configurations: geometry dominated (in midcentral collisions) and fluctuation dominated (in the most central collisions). Comparisons are made to predictions from Monte Carlo Glauber, viscous hydrodynamics, AMPT, and HIJING models. Together with the existing measurements of the individual flow harmonics the presented results provide further constraints on the initial conditions and the transport properties of the system produced in heavy-ion collisions.
Published: 2016

31. Particle identification in ALICE: a Bayesian approach

Author: Adam, J. Adamova, D. Aggarwal, M. M. Rinella, G. Aglieri and Agnello, M. Agrawal, N. Ahammed, Z. Ahmad, S. Ahn, S. U. and Aiola, S. Akindinov, A. Alam, S. N. Albuquerque, D. S. D. Aleksandrov, D. Alessandro, B. Alexandre, D. Alfaro Molina, R. Alici, A. Alkin, A. Almaraz, J. R. M. Alme, J. Alt, T. Altinpinar, S. Altsybeev, I. Alves Garcia Prado, C. Andrei, C. Andronic, A. Anguelov, V. Anticic, T. Antinori, F. Antonioli, P. Aphecetche, L. and Appelshaeuser, H. Arcelli, S. Arnaldi, R. Arnold, O. W. and Arsene, I. C. Arslandok, M. Audurier, B. Augustinus, A. and Averbeck, R. Azmi, M. D. Badala, A. Baek, Y. W. and Bagnasco, S. Bailhache, R. Bala, R. Balasubramanian, S. and Baldisseri, A. Baral, R. C. Barbano, A. M. Barbera, R. and Barile, F. Barnafoeldi, G. G. Barnby, L. S. Barret, V. and Bartalini, P. Barth, K. Bartke, J. Bartsch, E. Basile, M. Bastid, N. Basu, S. Bathen, B. Batigne, G. and Camejo, A. Batista Batyunya, B. Batzing, P. C. Bearden, I. G. Beck, H. Bedda, C. Behera, N. K. Belikov, I. and Bellini, F. Bello Martinez, H. Bellwied, R. Belmont, R. and Belmont-Moreno, E. Belyaev, V. Benacek, P. Bencedi, G. and Beole, S. Berceanu, I. Bercuci, A. Berdnikov, Y. and Berenyi, D. Bertens, R. A. Berzano, D. Betev, L. Bhasin, A. Bhat, I. R. Bhati, A. K. Bhattacharjee, B. Bhom, J. and Bianchi, L. Bianchi, N. Bianchin, C. Bielcik, J. and Bielcikova, J. Bilandzic, A. Biro, G. Biswas, R. Biswas, S. Bjelogrlic, S. Blair, J. T. Blau, D. Blume, C. and Bock, F. Bogdanov, A. Boggild, H. Boldizsar, L. Bombara, M. Book, J. Borel, H. Borissov, A. Borri, M. Bossu, F. Botta, E. Bourjau, C. Braun-Munzinger, P. Bregant, M. and Breitner, T. Broker, T. A. Browning, T. A. Broz, M. and Brucken, E. J. Bruna, E. Bruno, G. E. Budnikov, D. and Buesching, H. Bufalino, S. Buncic, P. Busch, O. and Buthelezi, Z. Butt, J. B. Buxton, J. T. Cabala, J. and Caffarri, D. Cai, X. Caines, H. Diaz, L. Calero Caliva, A. Calvo Villar, E. Camerini, P. Carena, F. Carena, W. and Carnesecchi, F. 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Lunardon, M. Luparello, G. and Lutz, T. H. Maevskaya, A. Mager, M. Mahajan, S. and Mahmood, S. M. Maire, A. Majka, R. D. Malaev, M. and Maldonado Cervantes, I. Malinina, L. Mal'Kevich, D. and Malzacher, P. Mamonov, A. Manko, V. Manso, F. Manzari, V. Marchisone, M. Mares, J. Margagliotti, G. V. and Margotti, A. Margutti, J. Marin, A. Markert, C. and Marquard, M. Martin, N. A. Blanco, J. Martin Martinengo, P. and Martinez, M. I. Garcia, G. Martinez Pedreira, M. Martinez and Mas, A. Masciocchi, S. Masera, M. Masoni, A. and Mastroserio, A. Matyja, A. Mayer, C. Mazer, J. Mazzoni, M. A. Mcdonald, D. Meddi, F. Melikyan, Y. and Menchaca-Rocha, A. Meninno, E. Perez, J. Mercado Meres, M. and Miake, Y. Mieskolainen, M. M. Mikhaylov, K. Milano, L. and Milosevic, J. Mischke, A. Mishra, A. N. Miskowiec, D. and Mitra, J. Mitu, C. M. Mohammadi, N. Mohanty, B. and Molnar, L. Montano Zetina, L. Montes, E. De Godoy, D. A. Moreira Moreno, L. A. P. Moretto, S. Morreale, A. and Morsch, A. Muccifora, V. Mudnic, E. Muehlheim, D. and Muhuri, S. Mukherjee, M. Mulligan, J. D. Munhoz, M. G. and Munzer, R. H. Murakami, H. Murray, S. Musa, L. Musinsky, J. Naik, B. Nair, R. Nandi, B. K. Nania, R. Nappi, E. Naru, M. U. Natal da Luz, H. Nattrass, C. Navarro, S. R. Nayak, K. Nayak, R. Nayak, T. K. Nazarenko, S. and Nedosekin, A. Nellen, L. Ng, F. Nicassio, M. Niculescu, M. Niedziela, J. Nielsen, B. S. Nikolaev, S. Nikulin, S. and Nikulin, V. Noferini, F. Nomokonov, P. Nooren, G. and Noris, J. C. C. Norman, J. Nyanin, A. Nystrand, J. and Oeschler, H. Oh, S. Oh, S. K. Ohlson, A. Okatan, A. and Okubo, T. Olah, L. Oleniacz, J. Oliveira Da Silva, A. C. and Oliver, M. H. Onderwaater, J. Oppedisano, C. Orava, R. and Oravec, M. Ortiz Velasquez, A. Oskarsson, A. Otwinowski, J. and Oyama, K. Ozdemir, M. Pachmayer, Y. Pagano, D. and Pagano, P. Paic, G. Pal, S. K. Pan, J. Pandey, A. K. and Papikyan, V. Pappalardo, G. S. Pareek, P. Park, W. J. and Parmar, S. Passfeld, A. Paticchio, V. Patra, R. N. Paul, B. Pei, H. Peitzmann, T. Da Costa, H. Pereira Peresunko, D. Lara, C. E. Perez Lezama, E. Perez Peskov, V. Pestov, Y. Petracek, V. Petrov, V. Petrovici, M. Petta, C. and Piano, S. Pikna, M. Pillot, P. Pimentel, L. O. D. L. and Pinazza, O. Pinsky, L. Piyarathna, D. B. Ploskon, M. and Planinic, M. Pluta, J. Pochybova, S. Podesta-Lerma, P. L. M. and Poghosyan, M. G. Polichtchouk, B. Poljak, N. Poonsawat, W. Pop, A. Porteboeuf-Houssais, S. Porter, J. Pospisil, J. Prasad, S. K. Preghenella, R. Prino, F. Pruneau, C. A. Pshenichnov, I. Puccio, M. Puddu, G. Pujahari, P. and Punin, V. Putschke, J. Qvigstad, H. Rachevski, A. Raha, S. Rajput, S. Rak, J. Rakotozafindrabe, A. Ramello, L. and Rami, F. Raniwala, R. Raniwala, S. Raesaenen, S. S. and Rascanu, B. T. Rathee, D. Read, K. F. Redlich, K. Reed, R. J. Rehman, A. Reichelt, P. Reidt, F. Ren, X. and Renfordt, R. Reolon, A. R. Reshetin, A. Reygers, K. and Riabov, V. Ricci, R. A. Richert, T. Richter, M. Riedler, P. Riegler, W. Riggi, F. Ristea, C. Rocco, E. and Rodriguez Cahuantzi, M. Manso, A. Rodriguez Roed, K. and Rogochaya, E. Rohr, D. Roehrich, D. Ronchetti, F. and Ronflette, L. Rosnet, P. Rossi, A. Roukoutakis, F. Roy, A. Roy, C. Roy, P. Montero, A. J. Rubio Rui, R. and Russo, R. Ryabinkin, E. Ryabov, Y. Rybicki, A. Saarinen, S. Sadhu, S. Sadovsky, S. Safarik, K. Sahlmuller, B. and Sahoo, P. Sahoo, R. Sahoo, S. Sahu, P. K. Saini, J. and Sakai, S. Saleh, M. A. Salzwedel, J. Sambyal, S. and Samsonov, V. Sandor, L. Sandoval, A. Sano, M. Sarkar, D. and Sarkar, N. Sarma, P. Scapparone, E. Scarlassara, F. and Schiaua, C. Schicker, R. Schmidt, C. Schmidt, H. R. and Schuchmann, S. Schukraft, J. Schulc, M. Schutz, Y. and Schwarz, K. Schweda, K. Scioli, G. Scomparin, E. Scott, R. Sefcik, M. Seger, J. E. Sekiguchi, Y. Sekihata, D. and Selyuzhenkov, I. Senosi, K. Senyukov, S. Serradilla, E. and Sevcenco, A. Shabanov, A. Shabetai, A. Shadura, O. and Shahoyan, R. Shahzad, M. I. Shangaraev, A. Sharma, A. and Sharma, M. Sharma, M. Sharma, N. Sheikh, A. I. Shigaki, K. Shou, Q. Shtejer, K. Sibiriak, Y. Siddhanta, S. and Sielewicz, K. M. Siemiarczuk, T. Silvermyr, D. Silvestre, C. and Simatovic, G. Simonetti, G. Singaraju, R. Singh, R. and Singha, S. Singhal, V. Sinha, B. C. Sinha, T. Sitar, B. and Sitta, M. Skaali, T. B. Slupecki, M. Smirnov, N. and Snellings, R. J. M. Snellman, T. W. Song, J. Song, M. and Song, Z. Soramel, F. Sorensen, S. de Souza, R. D. Sozzi, F. Spacek, M. Spiriti, E. Sputowska, I. and Spyropoulou-Stassinaki, M. Stachel, J. Stan, I. Stankus, P. and Stenlund, E. Steyn, G. Stiller, J. H. Stocco, D. and Strmen, P. Suaide, A. A. P. Sugitate, T. Suire, C. and Suleymanov, M. Suljic, M. Sultanov, R. Sumbera, M. and Sumowidagdo, S. Szabo, A. Szanto de Toledo, A. Szarka, I. and Szczepankiewicz, A. Szymanski, M. Tabassam, U. and Takahashi, J. Tambave, G. J. Tanaka, N. Tarhini, M. and Tariq, M. Tarzila, M. G. Tauro, A. Tejeda Munoz, G. and Telesca, A. Terasaki, K. Terrevoli, C. Teyssier, B. and Thaeder, J. Thakur, D. Thomas, D. Tieulent, R. Timmins, A. R. Toia, A. Trogolo, S. Trombetta, G. Trubnikov, V. and Trzaska, W. H. Tsuji, T. Tumkin, A. Turrisi, R. and Tveter, T. S. Ullaland, K. Uras, A. Usai, G. L. and Utrobicic, A. Vala, M. Palomo, L. Valencia Vallero, S. and Van Der Maarel, J. Van Hoorne, J. W. van Leeuwen, M. Vanat, T. Vyvre, P. Vande Varga, D. Vargas, A. Vargyas, M. and Varma, R. Vasileiou, M. Vasiliev, A. Vauthier, A. and Vechernin, V. Veen, A. M. Veldhoen, M. Velure, A. and Vercellin, E. Vergara Limon, S. Vernet, R. Verweij, M. and Vickovic, L. Viesti, G. Viinikainen, J. Vilakazi, Z. and Baillie, O. Villalobos Villatoro Tello, A. Vinogradov, A. and Vinogradov, L. Vinogradov, Y. Virgili, T. Vislavicius, V. and Viyogi, Y. P. Vodopyanov, A. Voelkl, M. A. Voloshin, K. and Voloshin, S. A. Volpe, G. von Haller, B. Vorobyev, I. and Vranic, D. Vrlakova, J. Vulpescu, B. Wagner, B. and Wagner, J. Wang, H. Wang, M. Watanabe, D. Watanabe, Y. and Weber, M. Weber, S. G. Weiser, D. F. Wessels, J. P. and Westerhoff, U. Whitehead, A. M. Wiechula, J. Wikne, J. and Wilk, G. Wilkinson, J. Williams, M. C. S. Windelband, B. and Winn, M. Yang, H. Yang, P. Yano, S. Yasin, Z. Yin, Z. Yokoyama, H. Yoo, I. -K. Yoon, J. H. Yurchenko, V. and Yushmanov, I. Zaborowska, A. Zaccolo, V. Zaman, A. and Zampolli, C. Zanoli, H. J. C. Zaporozhets, S. Zardoshti, N. and Zarochentsev, A. Zavada, P. Zaviyalov, N. Zbroszczyk, H. and Zgura, I. S. Zhalov, M. Zhang, H. Zhang, X. Zhang, Y. Zhang, C. Zhang, Z. Zhao, C. Zhigareva, N. Zhou, D. Zhou, Y. Zhou, Z. Zhu, H. Zhu, J. Zichichi, A. and Zimmermann, A. Zimmermann, M. B. Zinovjev, G. Zyzak, M. and ALICE Collaboration
Subjects: Nuclear Experiment
Abstract: We present a Bayesian approach to particle identification (PID) within the ALICE experiment. The aim is to more effectively combine the particle identification capabilities of its various detectors. After a brief explanation of the adopted methodology and formalism, the performance of the Bayesian PID approach for charged pions, kaons and protons in the central barrel of ALICE is studied. PID is performed via measurements of specific energy loss (dE/dx) and time of flight. PID efficiencies and misidentification probabilities are extracted and compared with Monte Carlo simulations using high-purity samples of identified particles in the decay channels K-S(0) -> pi(-)pi(+), phi -> K-K+, and A -> p pi(-) in p-Pb collisions at root sNN = 5.02 TeV. In order to thoroughly assess the validity of the Bayesian approach, this methodology was used to obtain corrected p(T) spectra of pions, kaons, protons, and D-0 mesons in pp collisions at root s = 7TeV. In all cases, the results using Bayesian PID were found to be consistent with previous measurements performed by ALICE using a standard PID approach. For the measurement of D-0 -> K-pi(+), it was found that a Bayesian PID approach gave a higher signal-to-background ratio and a similar or larger statistical significance when compared with standard PID selections, despite a reduced identification efficiency. Finally, we present an exploratory study of the measurement of A(c)(+) -> pK(-)pi(+) in pp collisions at root s = 7TeV, using the Bayesian approach for the identification of its decay products.
Published: 2016

32. Measurement of D-meson production versus multiplicity in p-Pb collisions at root s(NN)=5.02 TeV

Author: Adam, J. Adamova, D. Aggarwal, M. M. Rinella, G. Aglieri and Agnello, M. Agrawal, N. Ahammed, Z. Ahn, S. U. Aiola, S. and Akindinov, A. Alam, S. N. Aleksandrov, D. Alessandro, B. and Alexandre, D. Alfaro Molina, R. Alici, A. Alkin, A. and Almaraz, J. R. M. Alme, J. Alt, T. Altinpinar, S. and Altsybeev, I. Alves Garcia Prado, C. Andrei, C. Andronic, A. and Anguelov, V. Anielski, J. Anticic, T. Antinori, F. and Antonioli, P. Aphecetche, L. Appelshaeuser, H. Arcelli, S. and Arnaldi, R. Arnold, O. W. Arsene, I. C. Arslandok, M. and Audurier, B. Augustinus, A. Averbeck, R. Azmi, M. D. and Badala, A. Baek, Y. W. Bagnasco, S. Bailhache, R. Bala, R. Balasubramanian, S. Baldisseri, A. Baral, R. C. and Barbano, A. M. Barbera, R. Barile, F. Barnafoldi, G. G. and Barnby, L. S. Barret, V. Bartalini, P. Barth, K. Bartke, J. Bartsch, E. Basile, M. Bastid, N. Basu, S. and Bathen, B. Batigne, G. Camejo, A. Batista Batyunya, B. and Batzing, P. C. Bearden, I. G. Beck, H. Bedda, C. Behera, N. K. Belikov, I. Bellini, F. Bello Martinez, H. and Bellwied, R. Belmont, R. Belmont-Moreno, E. Belyaev, V. and Benacek, P. Bencedi, G. Beole, S. Berceanu, I. Bercuci, A. Berdnikov, Y. Berenyi, D. Bertens, R. A. Berzano, D. and Betev, L. Bhasin, A. Bhat, I. R. Bhati, A. K. and Bhattacharjee, B. Bhom, J. Bianchi, L. Bianchi, N. and Bianchin, C. Bielcik, J. Bielcikova, J. Bilandzic, A. and Biro, G. Biswas, R. Biswas, S. Bjelogrlic, S. Blair, J. T. Blau, D. Blume, C. Bock, F. Bogdanov, A. Boggild, H. Boldizsar, L. Bombara, M. Book, J. Borel, H. and Borissov, A. Borri, M. Bossu, F. Botta, E. Bourjau, C. and Braun-Munzinger, P. Bregant, M. Breitner, T. Broker, T. A. Browning, T. A. Broz, M. Brucken, E. J. Bruna, E. and Bruno, G. E. Budnikov, D. Buesching, H. Bufalino, S. and Buncic, P. Busch, O. Buthelezi, Z. Butt, J. B. Buxton, J. T. Caffarri, D. Cai, X. Caines, H. Diaz, L. Calero and Caliva, A. Calvo Villar, E. Camerini, P. Carena, F. and Carena, W. Carnesecchi, F. Castellanos, J. 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Muehlheim, D. Muhuri, S. Mukherjee, M. and Mulligan, J. D. Munhoz, M. G. Munzer, R. H. Murakami, H. and Murray, S. Musa, L. Musinsky, J. Naik, B. Nair, R. and Nandi, B. K. Nania, R. Nappi, E. Naru, M. U. Natal da Luz, H. Nattrass, C. Navarro, S. R. Nayak, K. Nayak, R. and Nayak, T. K. Nazarenko, S. Nedosekin, A. Nellen, L. and Ng, F. Nicassio, M. Niculescu, M. Niedziela, J. Nielsen, B. S. Nikolaev, S. Nikulin, S. Nikulin, V. Noferini, F. and Nomokonov, P. Nooren, G. Noris, J. C. C. Norman, J. and Nyanin, A. Nystrand, J. Oeschler, H. Oh, S. Oh, S. K. and Ohlson, A. Okatan, A. Okubo, T. Olah, L. Oleniacz, J. Oliveira Da Silva, A. C. Oliver, M. H. Onderwaater, J. and Oppedisano, C. Orava, R. Ortiz Velasquez, A. Oskarsson, A. Otwinowski, J. Oyama, K. Ozdemir, M. Pachmayer, Y. and Pagano, P. Paic, G. Pal, S. K. Pan, J. Pandey, A. K. and Papcun, P. Papikyan, V. Pappalardo, G. S. Pareek, P. and Park, W. J. Parmar, S. Passfeld, A. Paticchio, V. Patra, R. N. Paul, B. Pei, H. Peitzmann, T. Da Costa, H. Pereira Peresunko, D. Lara, C. E. Perez Lezama, E. Perez and Peskov, V. Pestov, Y. Petracek, V. Petrov, V. Petrovici, M. Petta, C. Piano, S. Pikna, M. Pillot, P. and Pimentel, L. O. D. L. Pinazza, O. Pinsky, L. Piyarathna, D. B. Ploskon, M. Planinic, M. Pluta, J. Pochybova, S. and Podesta-Lerma, P. L. M. Poghosyan, M. G. Polichtchouk, B. and Poljak, N. Poonsawat, W. Pop, A. Porteboeuf-Houssais, S. and Porter, J. Pospisil, J. Prasad, S. K. Preghenella, R. and Prino, F. Pruneau, C. A. Pshenichnov, I. Puccio, M. and Puddu, G. Pujahari, P. Punin, V. Putschke, J. Qvigstad, H. Rachevski, A. Raha, S. Rajput, S. Rak, J. and Rakotozafindrabe, A. Ramello, L. Rami, F. Raniwala, R. and Raniwala, S. Rasanen, S. S. Rascanu, B. T. Rathee, D. and Read, K. F. Redlich, K. Reed, R. J. Rehman, A. Reichelt, P. Reidt, F. Ren, X. Renfordt, R. Reolon, A. R. and Reshetin, A. Revol, J. -P. Reygers, K. Riabov, V. Ricci, R. A. Richert, T. Richter, M. Riedler, P. Riegler, W. and Riggi, F. Ristea, C. Rocco, E. Rodriguez Cahuantzi, M. and Manso, A. Rodriguez Roed, K. Rogochaya, E. Rohr, D. and Rohrich, D. Romita, R. Ronchetti, F. Ronflette, L. and Rosnet, P. Rossi, A. Roukoutakis, F. Roy, A. Roy, C. and Roy, P. Rubio Montero, A. J. Rui, R. Russo, R. and Ryabinkin, E. Ryabov, Y. Rybicki, A. Sadovsky, S. and Safarik, K. Sahlmuller, B. Sahoo, P. Sahoo, R. Sahoo, S. and Sahu, P. K. Saini, J. Sakai, S. Saleh, M. A. and Salzwedel, J. Sambyal, S. Samsonov, V. Sandor, L. and Sandoval, A. Sano, M. Sarkar, D. Sarma, P. Scapparone, E. Scarlassara, F. Schiaua, C. Schicker, R. Schmidt, C. and Schmidt, H. R. Schuchmann, S. Schukraft, J. Schulc, M. and Schuster, T. Schutz, Y. Schwarz, K. Schweda, K. and Scioli, G. Scomparin, E. Scott, R. Sefcik, M. Seger, J. E. Sekiguchi, Y. Sekihata, D. Selyuzhenkov, I. Senosi, K. Senyukov, S. Serradilla, E. Sevcenco, A. Shabanov, A. and Shabetai, A. Shadura, O. Shahoyan, R. Shangaraev, A. and Sharma, A. Sharma, M. Sharma, M. Sharma, N. Shigaki, K. and Shtejer, K. Sibiriak, Y. Siddhanta, S. Sielewicz, K. M. and Siemiarczuk, T. Silvermyr, D. Silvestre, C. Simatovic, G. Simonetti, G. Singaraju, R. Singh, R. Singha, S. and Singhal, V. Sinha, B. C. Sinha, T. Sitar, B. Sitta, M. and Skaali, T. B. Slupecki, M. Smirnov, N. Snellings, R. J. M. Snellman, T. W. Sogaard, C. Song, J. Song, M. and Song, Z. Soramel, F. Sorensen, S. de Souza, R. D. Sozzi, F. Spacek, M. Spiriti, E. Sputowska, I. and Spyropoulou-Stassinaki, M. Stachel, J. Stan, I. Stankus, P. and Stefanek, G. Stenlund, E. Steyn, G. Stiller, J. H. and Stocco, D. Strmen, P. Suaide, A. A. P. Sugitate, T. and Suire, C. Suleymanov, M. Suljic, M. Sultanov, R. and Sumbera, M. Szabo, A. Szanto de Toledo, A. Szarka, I. and Szczepankiewicz, A. Szymanski, M. Tabassam, U. Takahashi, J. and Tambave, G. J. Tanaka, N. Tangaro, M. A. Tarhini, M. and Tariq, M. Tarzila, M. G. Tauro, A. Tejeda Munoz, G. and Telesca, A. Terasaki, K. Terrevoli, C. Teyssier, B. and Thader, J. Thomas, D. Tieulent, R. Timmins, A. R. Toia, A. Trogolo, S. Trombetta, G. Trubnikov, V. Trzaska, W. H. Tsuji, T. Tumkin, A. Turrisi, R. Tveter, T. S. and Ullaland, K. Uras, A. Usai, G. L. Utrobicic, A. Vajzer, M. Vala, M. Palomo, L. Valencia Vallero, S. Van der Maarel, J. Van Hoorne, J. W. van Leeuwen, M. Vanat, T. and Vande Vyvre, P. Varga, D. Vargas, A. Vargyas, M. Varma, R. Vasileiou, M. Vasiliev, A. Vauthier, A. Vechernin, V. and Veen, A. M. Veldhoen, M. Velure, A. Venaruzzo, M. and Vercellin, E. Vergara Limon, S. Vernet, R. Verweij, M. and Vickovic, L. Viesti, G. Viinikainen, J. Vilakazi, Z. and Baillie, O. Villalobos Villatoro Tello, A. Vinogradov, A. and Vinogradov, L. Vinogradov, Y. Virgili, T. Vislavicius, V. and Viyogi, Y. P. Vodopyanov, A. Voelkl, M. A. Voloshin, K. and Voloshin, S. A. Volpe, G. von Haller, B. Vorobyev, I. and Vranic, D. Vrlakova, J. Vulpescu, B. Wagner, B. and Wagner, J. Wang, H. Wang, M. Watanabe, D. Watanabe, Y. and Weber, M. Weber, S. G. Weiser, D. F. Wessels, J. P. and Westerhoff, U. Whitehead, A. M. Wiechula, J. Wikne, J. and Wilde, M. Wilk, G. Wilkinson, J. Williams, M. C. S. and Windelband, B. Winn, M. Yaldo, C. G. Yang, H. Yang, P. and Yano, S. Yasar, C. Yin, Z. Yokoyama, H. Yoo, I. -K. and Yoon, J. H. Yurchenko, V. Yushmanov, I. Zaborowska, A. and Zaccolo, V. Zaman, A. Zampolli, C. Zanoli, H. J. C. and Zaporozhets, S. Zardoshti, N. Zarochentsev, A. Zavada, P. and Zaviyalov, N. Zbroszczyk, H. Zgura, I. S. Zhalov, M. and Zhang, H. Zhang, X. Zhang, Y. Zhang, C. Zhang, Z. and Zhao, C. Zhigareva, N. Zhou, D. Zhou, Y. Zhou, Z. and Zhu, H. Zhu, J. Zichichi, A. Zimmermann, A. Zimmermann, M. B. Zinovjev, G. Zyzak, M. ALICE Collaboration
Subjects: Nuclear Theory, High Energy Physics::Experiment, Nuclear Experiment
Abstract: The measurement of prompt D-meson production as a function of multiplicity in p-Pb collisions at TeV with the ALICE detector at root s(NN) the LHC is reported. D-0, D+ and Dau+ mesons are reconstructed via their hadronic decay channels in the centre-of-mass rapidity range -0.96 < y(cms) < 0.04 and transverse momentum interval 1 < p(T) < 24 GeV/c. The multiplicity dependence of D-meson production is examined by either comparing yields in p-Pb collisions in different event classes, selected based on the multiplicity of produced particles or zero-degree energy, with those in pp collisions, scaled by the number of binary nucleon-nucleon collisions (nuclear modification factor); as well as by evaluating the per-event yields in p-Pb collisions in different multiplicity intervals normalised to the multiplicity-integrated ones (relative yields). The nuclear modification factors for D-0, D+ and D*(+) are consistent with one another. The D-meson nuclear modification factors as a function of the zero-degree energy are consistent with unity within uncertainties in the measured p(T) regions and event classes. The relative D-meson yields, calculated in various p(T) intervals, increase as a function of the charged-particle multiplicity. The results are compared with the equivalent pp measurements at root s = 7 TeV as well as with EPOS 3 calculations.
Published: 2016

33. Production of light nuclei and anti-nuclei in pp and Pb-Pb collisions at energies available at the CERN Large Hadron Collider

Author: Adam, J. Adamova, D. Aggarwal, M. M. Rinella, G. Aglieri and Agnello, M. Agrawal, N. Ahammed, Z. Ahmed, I. Ahn, S. U. and Aimo, I. Aiola, S. Ajaz, M. Akindinov, A. Alam, S. N. Aleksandrov, D. Alessandro, B. Alexandre, D. Alfaro Molina, R. Alici, A. Alkin, A. Alme, J. Alt, T. and Altinpinar, S. Altsybeev, I. Alves Garcia Prado, C. Andrei, C. Andronic, A. Anguelov, V. Anielski, J. Anticic, T. and Antinori, F. Antonioli, P. Aphecetche, L. Appelshaeuser, H. Arcelli, S. Armesto, N. Arnaldi, R. Aronsson, T. and Arsene, I. C. Arslandok, M. Augustinus, A. Averbeck, R. and Azmi, M. D. Bach, M. Badala, A. Baek, Y. W. Bagnasco, S. and Bailhache, R. Bala, R. Baldisseri, A. Ball, M. and Pedrosa, F. Baltasar Dos Santos Baral, R. C. Barbano, A. M. and Barbera, R. Barile, F. Barnafoeldi, G. G. Barnby, L. S. and Barret, V. Bartalini, P. Bartke, J. Bartsch, E. Basile, M. Bastid, N. Basu, S. Bathen, B. Batigne, G. and Camejo, A. Batista Batyunya, B. Batzing, P. C. Bearden, I. G. Beck, H. Bedda, C. Behera, N. K. Belikov, I. and Bellini, F. Bello Martinez, H. Bellwied, R. Belmont, R. and Belmont-Moreno, E. Belyaev, V. Bencedi, G. Beole, S. and Berceanu, I. Bercuci, A. Berdnikov, Y. Berenyi, D. and Bertens, R. A. Berzano, D. Betev, L. Bhasin, A. Bhat, I. R. Bhati, A. K. Bhattacharjee, B. Bhom, J. Bianchi, L. and Bianchi, N. Bianchin, C. Bielcik, J. Bielcikova, J. and Bilandzic, A. Biswas, S. Bjelogrlic, S. Blanco, F. Blau, D. Blume, C. Bock, F. Bogdanov, A. Boggild, H. and Boldizsar, L. Bombara, M. Book, J. Borel, H. Borissov, A. Borri, M. Bossu, F. Botje, M. Botta, E. Boettger, S. Braun-Munzinger, P. Bregant, M. Breitner, T. Broker, T. A. Browning, T. A. Broz, M. Brucken, E. J. Bruna, E. and Bruno, G. E. Budnikov, D. Buesching, H. Bufalino, S. and Buncic, P. Busch, O. Buthelezi, Z. Buxton, J. T. and Caffarri, D. Cai, X. Caines, H. Diaz, L. Calero Caliva, A. Calvo Villar, E. Camerini, P. Carena, F. Carena, W. and Castellanos, J. Castillo Castro, A. J. Casula, E. A. 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Pinazza, O. and Pinsky, L. Piyarathna, D. B. Ploskon, M. Planinic, M. and Pluta, J. Pochybova, S. Podesta-Lerma, P. L. M. Poghosyan, M. G. Polichtchouk, B. Poljak, N. Poonsawat, W. Pop, A. and Porteboeuf-Houssais, S. Porter, J. Pospisil, J. Prasad, S. K. Preghenella, R. Prino, F. Pruneau, C. A. and Pshenichnov, I. Puccio, M. Puddu, G. Pujahari, P. Punin, V. Putschke, J. Qvigstad, H. Rachevski, A. Raha, S. and Rajput, S. Rak, J. Rakotozafindrabe, A. Ramello, L. and Raniwala, R. Raniwala, S. Rasanen, S. S. Rascanu, B. T. and Rathee, D. Read, K. F. Real, J. S. Redlich, K. Reed, R. J. Rehman, A. Reichelt, P. Reicher, M. Reidt, F. and Ren, X. Renfordt, R. Reolon, A. R. Reshetin, A. Rettig, F. Revol, J. -P. Reygers, K. Riabov, V. Ricci, R. A. and Richert, T. Richter, M. Riedler, P. Riegler, W. Riggi, F. Ristea, C. Rivetti, A. Rocco, E. Rodriguez Cahuantzi, M. Manso, A. Rodriguez Roed, K. Rogochaya, E. Rohr, D. and Rohrich, D. Romita, R. Ronchetti, F. Ronflette, L. and Rosnet, P. Rossi, A. Roukoutakis, F. Roy, A. Roy, C. and Roy, P. Rubio Montero, A. J. Rui, R. Russo, R. and Ryabinkin, E. Ryabov, Y. Rybicki, A. Sadovsky, S. and Safarik, K. Sahlmuller, B. Sahoo, P. Sahoo, R. Sahoo, S. and Sahu, P. K. Saini, J. Sakai, S. Saleh, M. A. and Salgado, C. A. Salzwedel, J. Sambyal, S. Samsonov, V. and Castro, X. Sanchez Sandor, L. Sandoval, A. Sano, M. and Santagati, G. Sarkar, D. Scapparone, E. Scarlassara, F. and Scharenberg, R. P. Schiaua, C. Schicker, R. Schmidt, C. and Schmidt, H. R. Schuchmann, S. Schukraft, J. Schulc, M. and Schuster, T. Schutz, Y. Schwarz, K. Schweda, K. Scioli, G. Scomparin, E. Scott, R. Seeder, K. S. Seger, J. E. and Sekiguchi, Y. Selyuzhenkov, I. Senosi, K. Seo, J. and Serradilla, E. Sevcenco, A. Shabanov, A. Shabetai, A. and Shadura, O. Shahoyan, R. Shangaraev, A. Sharma, A. and Sharma, M. Sharma, N. Shigaki, K. Shtejer, K. Sibiriak, Y. Siddhanta, S. Sielewicz, K. M. Siemiarczuk, T. and Silvermyr, D. Silvestre, C. Simatovic, G. Simonetti, G. and Singaraju, R. Singh, R. Singha, S. Singhal, V. Sinha, B. C. Sinha, T. Sitar, B. Sitta, M. Skaali, T. B. and Slupecki, M. Smirnov, N. Snellings, R. J. M. Snellman, T. W. and Sogaard, C. Soltz, R. Song, J. Song, M. Song, Z. and Soramel, F. Sorensen, S. Spacek, M. Spiriti, E. and Sputowska, I. Spyropoulou-Stassinaki, M. Srivastava, B. K. and Stachel, J. Stan, I. Stefanek, G. Steinpreis, M. and Stenlund, E. Steyn, G. Stiller, J. H. Stocco, D. Strmen, P. Suaide, A. A. P. Sugitate, T. Suire, C. Suleymanov, M. Sultanov, R. Sumbera, M. Symons, T. J. M. Szabo, A. and Szanto de Toledo, A. Szarka, I. Szczepankiewicz, A. and Szymanski, M. Takahashi, J. Tanaka, N. Tangaro, M. A. and Takaki, J. D. Tapia Peloni, A. Tarantola Tariq, M. Tarzila, M. G. Tauro, A. Tejeda Munoz, G. Telesca, A. Terasaki, K. Terrevoli, C. Teyssier, B. Thaeder, J. Thomas, D. and Tieulent, R. Timmins, A. R. Toia, A. Trogolo, S. and Trubnikov, V. Trzaska, W. H. Tsuji, T. Tumkin, A. and Turrisi, R. Tveter, T. S. Ullaland, K. Uras, A. Usai, G. L. Utrobicic, A. Vajzer, M. Vala, M. Palomo, L. Valencia and Vallero, S. Van der Maarel, J. Van Hoorne, J. W. van Leeuwen, M. Vanat, T. Vyvre, P. Vande Varga, D. Vargas, A. Vargyas, M. Varma, R. Vasileiou, M. Vasiliev, A. and Vauthier, A. Vechernin, V. Veen, A. M. Veldhoen, M. and Velure, A. Venaruzzo, M. Vercellin, E. Vergara Limon, S. and Vernet, R. Verweij, M. Vickovic, L. Viesti, G. and Viinikainen, J. Vilakazi, Z. Baillie, O. Villalobos and Villatoro Tello, A. Vinogradov, A. Vinogradov, L. and Vinogradov, Y. Virgili, T. Vislavicius, V. Viyogi, Y. P. and Vodopyanov, A. Voelkl, M. A. Voloshin, K. Voloshin, S. A. and Volpe, G. von Haller, B. Vorobyev, I. Vranic, D. and Vrlakova, J. Vulpescu, B. Vyushin, A. Wagner, B. Wagner, J. Wang, H. Wang, M. Wang, Y. Watanabe, D. Weber, M. and Weber, S. G. Wessels, J. P. Westerhoff, U. Wiechula, J. and Wikne, J. Wilde, M. Wilk, G. Wilkinson, J. Williams, M. C. S. Windelband, B. Winn, M. Yaldo, C. G. Yamaguchi, Y. Yang, H. Yang, P. Yano, S. Yasnopolskiy, S. Yin, Z. Yokoyama, H. Yoo, I. -K. Yurchenko, V. Yushmanov, I. and Zaborowska, A. Zaccolo, V. Zaman, A. Zampolli, C. and Zanoli, H. J. C. Zaporozhets, S. Zarochentsev, A. Zavada, P. and Zaviyalov, N. Zbroszczyk, H. Zgura, I. S. Zhalov, M. and Zhang, H. Zhang, X. Zhang, Y. Zhao, C. Zhigareva, N. and Zhou, D. Zhou, Y. Zhou, Z. Zhu, H. Zhu, J. Zhu, X. and Zichichi, A. Zimmermann, A. Zimmermann, M. B. Zinovjev, G. Zyzak, M. ALICE Collaboration
Subjects: Nuclear Experiment
Abstract: The production of (anti-) deuteron and (anti-) He-3 nuclei in Pb-Pb collisions at root sNN = 2.76 TeV has been studied using the ALICE detector at the LHC. The spectra exhibit a significant hardening with increasing centrality. Combined blast-wave fits of several particles support the interpretation that this behavior is caused by an increase of radial flow. The integrated particle yields are discussed in the context of coalescence and thermal-statistical model expectations. The particle ratios, He-3 / d and He-3 / p, in Pb-Pb collisions are found to be in agreement with a common chemical freeze-out temperature of T-chem approximate to 156 MeV. These ratios do not vary with centrality which is in agreement with the thermal-statistical model. In a coalescence approach, it excludes models in which nucleus production is proportional to the particle multiplicity and favors those in which it is proportional to the particle density instead. In addition, the observation of 31 anti-tritons in Pb-Pb collisions is reported. For comparison, the deuteron spectrum in pp collisions at root s = 7 TeV is also presented. While the p/p ratio is similar in pp and Pb-Pb collisions, the d/p ratio in pp collisions is found to be lower by a factor of 2.2 than in Pb-Pb collisions.
Published: 2016

34. Inclusive quarkonium production at forward rapidity in pp collisions at root s=8 TeV

Author: Adam, J. Adamova, D. Aggarwal, M. M. Rinella, G. Aglieri and Agnello, M. Agrawal, N. Ahammed, Z. Ahn, S. U. Aiola, S. and Akindinov, A. Alam, S. N. Aleksandrov, D. Alessandro, B. and Alexandre, D. Alfaro Molina, R. Alici, A. Alkin, A. and Almaraz, J. R. M. Alme, J. Alt, T. Altinpinar, S. and Altsybeev, I. Alves Garcia Prado, C. Andrei, C. Andronic, A. and Anguelov, V. Anielski, J. Anticic, T. Antinori, F. and Antonioli, P. Aphecetche, L. Appelshaueser, H. Arcelli, S. and Arnaldi, R. Arnold, O. W. Arsene, I. C. Arslandok, M. and Audurier, B. Augustinus, A. Averbeck, R. Azmi, M. D. and Badala, A. Baek, Y. W. Bagnasco, S. Bailhache, R. Bala, R. Baldisseri, A. Baral, R. C. Barbano, A. M. Barbera, R. Barile, F. Barnafoeldi, G. G. Barnby, L. S. Barret, V. Bartalini, P. Barth, K. Bartke, J. Bartsch, E. and Basile, M. Bastid, N. Basu, S. Bathen, B. Batigne, G. and Camejo, A. Batista Batyunya, B. Batzing, P. C. Bearden, I. G. Beck, H. Bedda, C. Behera, N. K. Belikov, I. and Bellini, F. Bello Martinez, H. Bellwied, R. Belmont, R. and Belmont-Moreno, E. Belyaev, V. Bencedi, G. Beole, S. and Berceanu, I. Bercuci, A. Berdnikov, Y. Berenyi, D. and Bertens, R. A. Berzano, D. Betev, L. Bhasin, A. Bhat, I. R. Bhati, A. K. Bhattacharjee, B. Bhom, J. Bianchi, L. and Bianchi, N. Bianchin, C. Bielcik, J. Bielcikova, J. and Bilandzic, A. Biswas, R. Biswas, S. Bjelogrlic, S. and Blair, J. T. Blau, D. Blume, C. Bock, F. Bogdanov, A. and Boggild, H. Boldizsar, L. Bombara, M. Book, J. and Borel, H. Borissov, A. Borri, M. Bossu, F. Botta, E. and Boettger, S. Bourjau, C. Braun-Munzinger, P. Bregant, M. and Breitner, T. Broker, T. A. Browning, T. A. Broz, M. and Brucken, E. J. Bruna, E. Bruno, G. E. Budnikov, D. and Buesching, H. Bufalino, S. Buncic, P. Busch, O. and Buthelezi, Z. Butt, J. B. Buxton, J. T. Caffarri, D. and Cai, X. Caines, H. Diaz, L. Calero Caliva, A. Villar, E. Calvo Camerini, P. Carena, F. Carena, W. Carnesecchi, F. and Castellanos, J. Castillo Castro, A. J. 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Rogochaya, E. Rohr, D. Rohrich, D. Romita, R. and Ronchetti, F. Ronflette, L. Rosnet, P. Rossi, A. and Roukoutakis, F. Roy, A. Roy, C. Roy, P. Rubio Montero, A. J. Rui, R. Russo, R. Ryabinkin, E. Ryabov, Y. and Rybicki, A. Sadovsky, S. Safarik, K. Sahlmuller, B. and Sahoo, P. Sahoo, R. Sahoo, S. Sahu, P. K. Saini, J. and Sakai, S. Saleh, M. A. Salzwedel, J. Sambyal, S. and Samsonov, V. Sandor, L. Sandoval, A. Sano, M. Sarkar, D. and Scapparone, E. Scarlassara, F. Schiaua, C. Schicker, R. and Schmidt, C. Schmidt, H. R. Schuchmann, S. Schukraft, J. and Schulc, M. Schuster, T. Schutz, Y. Schwarz, K. and Schweda, K. Scioli, G. Scomparin, E. Scott, R. Sefcik, M. Seger, J. E. Sekiguchi, Y. Sekihata, D. Selyuzhenkov, I. Senosi, K. Senyukov, S. Serradilla, E. Sevcenco, A. and Shabanov, A. Shabetai, A. Shadura, O. Shahoyan, R. and Shangaraev, A. Sharma, A. Sharma, M. Sharma, M. Sharma, N. Shigaki, K. Shtejer, K. Sibiriak, Y. Siddhanta, S. and Sielewicz, K. M. Siemiarczuk, T. Silvermyr, D. and Silvestre, C. Simatovic, G. Simonetti, G. Singaraju, R. and Singh, R. Singha, S. Singhal, V. Sinha, B. C. Sinha, T. and Sitar, B. Sitta, M. Skaali, T. B. Slupecki, M. and Smirnov, N. Snellings, R. J. M. Snellman, T. W. Sogaard, C. and Song, J. Song, M. Song, Z. Soramel, F. Sorensen, S. and Sozzi, F. Spacek, M. Spiriti, E. Sputowska, I. and Spyropoulou-Stassinaki, M. Stachel, J. Stan, I. Stefanek, G. and Stenlund, E. Steyn, G. Stiller, J. H. Stocco, D. and Strmen, P. Suaide, A. A. P. Sugitate, T. Suire, C. and Suleymanov, M. Suljic, M. Sultanov, R. Sumbera, M. and Szabo, A. Szanto de Toledo, A. Szarka, I. Szczepankiewicz, A. Szymanski, M. Tabassam, U. Takahashi, J. Tambave, G. J. Tanaka, N. Tangaro, M. A. Tarhini, M. Tariq, M. and Tarzila, M. G. Tauro, A. Tejeda Munoz, G. Telesca, A. and Terasaki, K. Terrevoli, C. Teyssier, B. Thaeder, J. and Thomas, D. Tieulent, R. Timmins, A. R. Toia, A. Trogolo, S. Trombetta, G. Trubnikov, V. Trzaska, W. H. Tsuji, T. and Tumkin, A. Turrisi, R. Tveter, T. S. Ullaland, K. and Uras, A. Usai, G. L. Utrobicic, A. Vajzer, M. Vala, M. and Palomo, L. Valencia Vallero, S. Van der Maarel, J. Van Hoorne, J. W. Van Leeuwen, M. Vanat, T. Vyvre, P. Vande and Varga, D. Vargas, A. Vargyas, M. Varma, R. Vasileiou, M. and Vasiliev, A. Vauthier, A. Vechernin, V. Veen, A. M. and Veldhoen, M. Velure, A. Venaruzzo, M. Vercellin, E. and Vergara Limon, S. Vernet, R. Verweij, M. Vickovic, L. and Viesti, G. Viinikainen, J. Vilakazi, Z. Baillie, O. Villalobos Villatoro Tello, A. Vinogradov, A. Vinogradov, L. and Vinogradov, Y. Virgili, T. Vislavicius, V. Viyogi, Y. P. and Vodopyanov, A. Voelkl, M. A. Voloshin, K. Voloshin, S. A. Volpe, G. von Haller, B. Vorobyev, I. Vranic, D. and Vrlakova, J. Vulpescu, B. Vyushin, A. Wagner, B. Wagner, J. Wang, H. Wang, M. Watanabe, D. Watanabe, Y. and Weber, M. Weber, S. G. Weiser, D. F. Wessels, J. P. and Westerhoff, U. Whitehead, A. M. Wiechula, J. Wikne, J. and Wilde, M. Wilk, G. Wilkinson, J. Williams, M. C. S. and Windelband, B. Winn, M. Yaldo, C. G. Yang, H. Yang, P. and Yano, S. Yasar, C. Yin, Z. Yokoyama, H. Yoo, I. -K. and Yoon, J. H. Yurchenko, V. Yushmanov, I. Zaborowska, A. and Zaccolo, V. Zaman, A. Zampolli, C. Zanoli, H. J. C. and Zaporozhets, S. Zardoshti, N. Zarochentsev, A. Zavada, P. and Zaviyalov, N. Zbroszczyk, H. Zgura, I. S. Zhalov, M. and Zhang, H. Zhang, X. Zhang, Y. Zhang, C. Zhang, Z. and Zhao, C. Zhigareva, N. Zhou, D. Zhou, Y. Zhou, Z. and Zhu, H. Zhu, J. Zichichi, A. Zimmermann, A. Zimmermann, M. B. Zinovjev, G. Zyzak, M. ALICE Collaboration
Subjects: High Energy Physics::Experiment, Nuclear Experiment
Abstract: We report on the inclusive production cross sections of J/psi, psi(2S), gamma(1S), gamma(2S) and gamma(3S), measured at forward rapidity with the ALICE detector in pp collisions at a center-of-mass energy root s = 8 TeV. The analysis is based on data collected at the LHC and corresponds to an integrated luminosity of 1.23 pb(-1). Quarkonia are reconstructed in the dimuon-decay channel. The differential production cross sections are measured as a function of the transverse momentum p(T) and rapidity y, over the p(T) ranges 0 < p(T) < 20 GeV/c for J/psi, 0 < p(T) < 12 GeV/c for all other resonances, and for 2.5 < y < 4. The cross sections, integrated over p(T) and y, and assuming unpolarized quarkonia, are sigma(J/psi) = 8.98 +/- 0.04 +/- 0.82 mu b, sigma(psi(2S)) = 1.23 +/- 0.08 +/- 0.22 mu b, sigma(gamma(1S)) = 71 +/- 6 +/- 7 nb, sigma(gamma(2S)) = 26 +/- 5 +/- 4 nb and sigma(gamma(3S)) = 9 +/- 4 +/- 1 nb, where the first uncertainty is statistical and the second one is systematic. These values agree, within at most 1.4 sigma, with measurements performed by the LHCb collaboration in the same rapidity range.
Published: 2016

35. Measurement of transverse energy at midrapidity in Pb-Pb collisions at root s(NN)=2.76 TeV

Author: Adam, J. Adamova, D. Aggarwal, M. M. Rinella, G. Aglieri and Agnello, M. Agrawal, N. Ahammed, Z. Ahmad, S. Ahn, S. U. and Aiola, S. Akindinov, A. Alam, S. N. Albuquerque, D. S. D. Aleksandrov, D. Alessandro, B. Alexandre, D. Molina, R. Alfaro Alici, A. Alkin, A. Almaraz, J. R. M. Alme, J. and Alt, T. Altinpinar, S. Altsybeev, I. Alves Garcia Prado, C. Andrei, C. Andronic, A. Anguelov, V. Anticic, T. and Antinori, F. Antonioli, P. Aphecetche, L. Appelshaeuser, H. and Arcelli, S. Arnaldi, R. Arnold, O. W. Arsene, I. C. and Arslandok, M. Audurier, B. Augustinus, A. Averbeck, R. and Azmi, M. D. Badala, A. Baek, Y. W. Bagnasco, S. and Bailhache, R. Bala, R. Balasubramanian, S. Baldisseri, A. and Baral, R. C. Barbano, A. M. Barbera, R. Barile, F. and Barnafoldi, G. G. Barnby, L. S. Barret, V. Bartalini, P. and Barth, K. Bartke, J. Bartsch, E. Basile, M. Bastid, N. and Basu, S. Bathen, B. Batigne, G. Camejo, A. Batista and Batyunya, B. Batzing, P. C. Bearden, I. G. Beck, H. and Bedda, C. Behera, N. K. Belikov, I. Bellini, F. and Martinez, H. Bello Bellwied, R. Belmont, R. Belmont-Moreno, E. Belyaev, V. Bencedi, G. Beole, S. Berceanu, I. and Bercuci, A. Berdnikov, Y. Berenyi, D. Bertens, R. A. and Berzano, D. Betev, L. Bhasin, A. Bhat, I. R. Bhati, A. K. Bhattacharjee, B. Bhom, J. Bianchi, L. Bianchi, N. and Bianchin, C. Bielcik, J. Bielcikova, J. Bilandzic, A. and Biro, G. Biswas, R. Biswas, S. Bjelogrlic, S. Blair, J. T. Blau, D. Blume, C. Bock, F. Bogdanov, A. and Boggild, H. Boldizsar, L. Bombara, M. Book, J. Borel, H. and Borissov, A. Borri, M. Bossu, F. Botta, E. Bourjau, C. Braun-Munzinger, P. Bregant, M. Breitner, T. Broker, T. A. Browning, T. A. Broz, M. Brucken, E. J. Bruna, E. and Bruno, G. E. Budnikov, D. Buesching, H. Bufalino, S. and Buncic, P. Busch, O. Buthelezi, Z. Butt, J. B. Buxton, J. T. Cabala, J. Caffarri, D. Cai, X. Caines, H. and Diaz, L. Calero Caliva, A. Calvo Villar, E. Camerini, P. and Carena, F. Carena, W. 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Riedler, P. Riegler, W. Riggi, F. Ristea, C. Rocco, E. and Rodriguez Cahuantzi, M. Manso, A. Rodriguez Roed, K. and Rogochaya, E. Rohr, D. Rohrich, D. Ronchetti, F. and Ronflette, L. Rosnet, P. Rossi, A. Roukoutakis, F. Roy, A. Roy, C. Roy, P. Rubio Montero, A. J. Rui, R. and Russo, R. Ruzza, B. D. Ryabinkin, E. Ryabov, Y. Rybicki, A. Saarinen, S. Sadhu, S. Sadovsky, S. Safarik, K. and Sahlmuller, B. Sahoo, P. Sahoo, R. Sahoo, S. Sahu, P. K. and Saini, J. Sakai, S. Saleh, M. A. Salzwedel, J. and Sambyal, S. Samsonov, V. Sandor, L. Sandoval, A. Sano, M. Sarkar, D. Sarkar, N. Sarma, P. Scapparone, E. and Scarlassara, F. Schiaua, C. Schicker, R. Schmidt, C. and Schmidt, H. R. Schuchmann, S. Schukraft, J. Schulc, M. and Schutz, Y. Schwarz, K. Schweda, K. Scioli, G. Scomparin, E. Scott, R. Sefcik, M. Seger, J. E. Sekiguchi, Y. and Sekihata, D. Selyuzhenkov, I. Senosi, K. Senyukov, S. and Serradilla, E. Sevcenco, A. Shabanov, A. Shabetai, A. and Shadura, O. Shahoyan, R. Shahzad, M. I. Shangaraev, A. and Sharma, A. Sharma, M. Sharma, M. Sharma, N. Sheikh, A. I. Shigaki, K. Shou, Q. Shtejer, K. Sibiriak, Y. and Siddhanta, S. Sielewicz, K. M. Siemiarczuk, T. Silvermyr, D. and Silvestre, C. Simatovic, G. Simonetti, G. Singaraju, R. and Singh, R. Singha, S. Singhal, V. Sinha, B. C. Sinha, T. Sitar, B. Sitta, M. Skaali, T. B. Slupecki, M. and Smirnov, N. Snellings, R. J. M. Snellman, T. W. Song, J. and Song, M. Song, Z. Soramel, F. Sorensen, S. de Souza, R. D. Sozzi, F. Spacek, M. Spiriti, E. Sputowska, I. and Spyropoulou-Stassinaki, M. Stachel, J. Stan, I. Stankus, P. and Stenlund, E. Steyn, G. Stiller, J. H. Stocco, D. and Strmen, P. Suaide, A. A. P. Sugitate, T. Suire, C. and Suleymanov, M. Suljic, M. Sultanov, R. Sumbera, M. and Sumowidagdo, S. Szabo, A. Szanto de Toledo, A. Szarka, I. and Szczepankiewicz, A. Szymanski, M. Tabassam, U. and Takahashi, J. Tambave, G. J. Tanaka, N. Tarhini, M. and Tariq, M. Tarzila, M. G. Tauro, A. Tejeda Munoz, G. and Telesca, A. Terasaki, K. Terrevoli, C. Teyssier, B. and Thaeder, J. Thakur, D. Thomas, D. Tieulent, R. Tikhonov, A. Timmins, A. R. Toia, A. Trogolo, S. Trombetta, G. and Trubnikov, V. Trzaska, W. H. Tsuji, T. Tumkin, A. and Turrisi, R. Tveter, T. S. Ullaland, K. Uras, A. Usai, G. L. Utrobicic, A. Vala, M. Palomo, L. Valencia Vallero, S. Van der Maarel, J. Van Hoorne, J. W. van Leeuwen, M. and Vanat, T. Vyvre, P. Vande Varga, D. Vargas, A. Vargyas, M. Varma, R. Vasileiou, M. Vasiliev, A. Vauthier, A. and Doce, O. Vazquez Vechernin, V. Veen, A. M. Veldhoen, M. and Velure, A. Vercellin, E. Vergara Limon, S. Vernet, R. and Verweij, M. Vickovic, L. Viinikainen, J. Vilakazi, Z. and Baillie, O. Villalobos Villatoro Tello, A. Vinogradov, A. and Vinogradov, L. Vinogradov, Y. Virgili, T. Vislavicius, V. and Viyogi, Y. P. Vodopyanov, A. Voelkl, M. A. Voloshin, K. and Voloshin, S. A. Volpe, G. von Haller, B. Vorobyev, I. and Vranic, D. Vrlakova, J. Vulpescu, B. Wagner, B. and Wagner, J. Wang, H. Wang, M. Watanabe, D. Watanabe, Y. and Weber, M. Weber, S. G. Weiser, D. F. Wessels, J. P. and Westerhoff, U. Whitehead, A. M. Wiechula, J. Wikne, J. and Wilk, G. Wilkinson, J. Williams, M. C. S. Windelband, B. and Winn, M. Yang, P. Yano, S. Yasin, Z. Yin, Z. and Yokoyama, H. Yoo, I. -K. Yoon, J. H. Yurchenko, V. and Yushmanov, I. Zaborowska, A. Zaccolo, V. Zaman, A. and Zampolli, C. Zanoli, H. J. C. Zaporozhets, S. Zardoshti, N. and Zarochentsev, A. Zavada, P. Zaviyalov, N. Zbroszczyk, H. and Zgura, I. S. Zhalov, M. Zhang, H. Zhang, X. Zhang, Y. Zhang, C. Zhang, Z. Zhao, C. Zhigareva, N. Zhou, D. Zhou, Y. Zhou, Z. Zhu, H. Zhu, J. Zichichi, A. and Zimmermann, A. Zimmermann, M. B. Zinovjev, G. Zyzak, M. and ALICE Collaboration
Subjects: High Energy Physics::Experiment, Nuclear Experiment
Abstract: We report the transverse energy (ET) measured with ALICE at midrapidity in Pb-Pb collisions at root s(NN) = 2.76 TeV as a function of centrality. The transverse energy was measured using identified single-particle tracks. The measurement was cross checked using the electromagnetic calorimeters and the transverse momentum distributions of identified particles previously reported by ALICE. The results are compared to theoretical models as well as to results from other experiments. The mean ET per unit pseudorapidity (eta), < dE(T)/d eta >, in 0%-5% central collisions is 1737 +/- 6(stat.) +/- 97(sys.) GeV. We find a similar centrality dependence of the shape of < dE(T)/d eta > as a function of the number of participating nucleons to that seen at lower energies. The growth in < dE(T)/d eta > at the LHC energies exceeds extrapolations of low-energy data. We observe a nearly linear scaling of < dE(T)/d eta > with the number of quark participants. With the canonical assumption of a 1 fm/c formation time, we estimate that the energy density in 0%-5% central Pb-Pb collisions at root s(NN) = 2.76 TeV is 12.3 +/- 1.0 GeV/fm(3) and that the energy density at the most central 80 fm(2) of the collision is at least 21.5 +/- 1.7 GeV/fm(3). This is roughly 2.3 times that observed in 0%-5% central Au-Au collisions at root s(NN) = 200 GeV.
Published: 2016

36. Multiplicity and transverse momentum evolution of charge-dependent correlations in pp, p-Pb, and Pb-Pb collisions at the LHC

Author: Adam, J. Adamova, D. Aggarwal, M. M. Rinella, G. Aglieri and Agnello, M. Agrawal, N. Ahammed, Z. Ahn, S. U. Aiola, S. and Akindinov, A. Alam, S. N. Aleksandrov, D. Alessandro, B. and Alexandre, D. Alfaro Molina, R. Alici, A. Alkin, A. and Almaraz, J. R. M. Alme, J. Alt, T. Altinpinar, S. and Altsybeev, I. Alves Garcia Prado, C. Andrei, C. Andronic, A. and Anguelov, V. Anielski, J. Anticic, T. Antinori, F. and Antonioli, P. Aphecetche, L. Appelshaeser, H. Arcelli, S. and Arnaldi, R. Arnold, O. W. Arsene, I. C. Arslandok, M. and Audurier, B. Augustinus, A. Averbeck, R. Azmi, M. D. and Badala, A. Baek, Y. W. Bagnasco, S. Bailhache, R. Bala, R. Baldisseri, A. Baral, R. C. Barbano, A. M. Barbera, R. Barile, F. Barnafoeldi, G. G. Barnby, L. S. Barret, V. Bartalini, P. Barth, K. Bartke, J. Bartsch, E. and Basile, M. Bastid, N. Basu, S. Bathen, B. Batigne, G. and Camejo, A. Batista Batyunya, B. Batzing, P. C. Bearden, I. G. Beck, H. Bedda, C. Behera, N. K. Belikov, I. and Bellini, F. Bello Martinez, H. Bellwied, R. Belmont, R. and Belmont-Moreno, E. Belyaev, V. Bencedi, G. Beole, S. and Berceanu, I. Bercuci, A. Berdnikov, Y. Berenyi, D. and Bertens, R. A. Berzano, D. Betev, L. Bhasin, A. Bhat, I. R. Bhati, A. K. Bhattacharjee, B. Bhom, J. Bianchi, L. and Bianchi, N. Bianchin, C. Bielcik, J. Bielcikova, J. and Bilandzic, A. Biswas, R. Biswas, S. Bjelogrlic, S. and Blair, J. T. Blau, D. Blume, C. Bock, F. Bogdanov, A. and Boggild, H. Boldizsar, L. Bombara, M. Book, J. and Borel, H. Borissov, A. Borri, M. Bossu, F. Botta, E. and Boettger, S. Bourjau, C. Braun-Munzinger, P. Bregant, M. and Breitner, T. Broker, T. A. Browning, T. A. Broz, M. and Brucken, E. J. Bruna, E. Bruno, G. E. Budnikov, D. and Buesching, H. Bufalino, S. Buncic, P. Busch, O. and Buthelezi, Z. Butt, J. B. Buxton, J. T. Caffarri, D. and Cai, X. Caines, H. Diaz, L. Calero Caliva, A. Calvo Villar, E. Camerini, P. Carena, F. Carena, W. and Carnesecchi, F. Castellanos, J. Castillo Castro, A. 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Simatovic, G. Simonetti, G. Singaraju, R. and Singh, R. Singha, S. Singhal, V. Sinha, B. C. Sinha, T. and Sitar, B. Sitta, M. Skaali, T. B. Slupecki, M. and Smirnov, N. Snellings, R. J. M. Snellman, T. W. Sogaard, C. and Song, J. Song, M. Song, Z. Soramel, F. Sorensen, S. and Sozzi, F. Spacek, M. Spiriti, E. Sputowska, I. and Spyropoulou-Stassinaki, M. Stachel, J. Stan, I. Stefanek, G. and Stenlund, E. Steyn, G. Stiller, J. H. Stocco, D. and Strmen, P. Suaide, A. A. P. Sugitate, T. Suire, C. and Suleymanov, M. Suljic, M. Sultanov, R. Sumbera, M. and Szabo, A. Szanto de Toledo, A. Szarka, I. Szczepankiewicz, A. Szymanski, M. Tabassam, U. Takahashi, J. Tambave, G. J. Tanaka, N. Tangaro, M. A. Tarhini, M. Tariq, M. and Tarzila, M. G. Tauro, A. Tejeda Munoz, G. Telesca, A. and Terasaki, K. Terrevoli, C. Teyssier, B. Thaeder, J. and Thomas, D. Tieulent, R. Timmins, A. R. Toia, A. Trogolo, S. Trombetta, G. Trubnikov, V. Trzaska, W. H. Tsuji, T. and Tumkin, A. Turrisi, R. Tveter, T. S. Ullaland, K. and Uras, A. Usai, G. L. Utrobicic, A. Vajzer, M. Vala, M. and Palomo, L. Valencia Vallero, S. Van der Maarel, J. Van Hoorne, J. W. van Leeuwen, M. Vanat, T. Vyvre, P. Vande and Varga, D. Vargas, A. Vargyas, M. Varma, R. Vasileiou, M. and Vasiliev, A. Vauthier, A. Vechernin, V. Veen, A. M. and Veldhoen, M. Velure, A. Venaruzzo, M. Vercellin, E. and Vergara Limon, S. Vernet, R. Verweij, M. Vickovic, L. and Viesti, G. Viinikainen, J. Vilakazi, Z. Baillie, O. Villalobos Villatoro Tello, A. Vinogradov, A. Vinogradov, L. and Vinogradov, Y. Virgili, T. Vislavicius, V. Viyogi, Y. P. and Vodopyanov, A. Voelkl, M. A. Voloshin, K. Voloshin, S. A. Volpe, G. von Haller, B. Vorobyev, I. Vranic, D. and Vrlakova, J. Vulpescu, B. Vyushin, A. Wagner, B. Wagner, J. Wang, H. Wang, M. Watanabe, D. Watanabe, Y. and Weber, M. Weber, S. G. Weiser, D. F. Wessels, J. P. and Westerhoff, U. Whitehead, A. M. Wiechula, J. Wikne, J. and Wilde, M. Wilk, G. Wilkinson, J. Williams, M. C. S. and Windelband, B. Winn, M. Yaldo, C. G. Yang, H. Yang, P. and Yano, S. Yasar, C. Yin, Z. Yokoyama, H. Yoo, I. -K. and Yoon, J. H. Yurchenko, V. Yushmanov, I. Zaborowska, A. and Zaccolo, V. Zaman, A. Zampolli, C. Zanoli, H. J. C. and Zaporozhets, S. Zardoshti, N. Zarochentsev, A. Zavada, P. and Zaviyalov, N. Zbroszczyk, H. Zgura, I. S. Zhalov, M. and Zhang, H. Zhang, X. Zhang, Y. Zhang, C. Zhang, Z. and Zhao, C. Zhigareva, N. Zhou, D. Zhou, Y. Zhou, Z. and Zhu, H. Zhu, J. Zichichi, A. Zimmermann, A. Zimmermann, M. B. Zinovjev, G. Zyzak, M. ALICE Collaboration
Subjects: Nuclear Experiment
Abstract: We report on two-particle charge-dependent correlations in pp, p-Pb, and Pb-Pb collisions as a function of the pseudorapidity and azimuthal angle difference, Delta eta and Delta phi respectively. These correlations are studied using the balance function that probes the charge creation time and the development of collectivity in the produced system. The dependence of the balance function on the event multiplicity as well as on the trigger and associated particle transversemomentum (p(T)) in pp, p-Pb, and Pb-Pb collisions at root s(NN) = 7, 5.02, and 2.76 TeV, respectively, are presented. In the low transverse momentum region, for 0.2 < p(T) < 2.0 GeV/c, the balance function becomes narrower in both Delta eta and Delta phi directions in all three systems for events with higher multiplicity. The experimental findings favor models that either incorporate some collective behavior (e.g. AMPT) or different mechanisms that lead to effects that resemble collective behavior (e.g. PYTHIA8 with color reconnection). For higher values of transverse momenta the balance function becomes even narrower but exhibits no multiplicity dependence, indicating that the observed narrowing with increasing multiplicity at low pT is a feature of bulk particle production.
Published: 2016

37. Higher harmonic flow coefficients of identified hadrons in Pb-Pb collisions at root sNN=2.76 TeV

Author: Adam, J. Adamova, D. Aggarwal, M. M. Rinella, G. Aglieri and Agnello, M. Agrawal, N. Ahammed, Z. Ahmad, S. Ahn, S. U. and Aiola, S. Akindinov, A. Alam, S. N. Albuquerque, D. S. D. Aleksandrov, D. Alessandro, B. Alexandre, D. Molina, R. Alfaro Alici, A. Alkin, A. Alme, J. Alt, T. and Altinpinar, S. Altsybeev, I. Prado, C. Alves Garcia An, M. and Andrei, C. Andrews, H. A. Andronic, A. Anguelov, V. and Anticic, T. Antinori, F. Antonioli, P. Aphecetche, L. and Appelshauser, H. Arcelli, S. Arnaldi, R. Arnold, O. W. and Arsene, I. C. Arslandok, M. Audurier, B. Augustinus, A. and Averbeck, R. Azmi, M. D. Badala, A. Baek, Y. W. and Bagnasco, S. Bailhache, R. Bala, R. Balasubramanian, S. and Baldisseri, A. Baral, R. C. Barbano, A. M. Barbera, R. and Barile, F. Barnafoldi, G. G. Barnby, L. S. Barret, V. and Bartalini, P. Barth, K. Bartke, J. Bartsch, E. Basile, M. Bastid, N. Basu, S. Bathen, B. Batigne, G. and Camejo, A. Batista Batyunya, B. Batzing, P. C. Bearden, I. G. Beck, H. Bedda, C. Behera, N. K. Belikov, I. and Bellini, F. Martinez, H. Bello Bellwied, R. Belmont, R. and Belmont-Moreno, E. Beltran, L. G. E. Belyaev, V. Bencedi, G. and Beole, S. Berceanu, I. Bercuci, A. Berdnikov, Y. and Berenyi, D. Bertens, R. A. Berzano, D. Betev, L. Bhasin, A. Bhat, I. R. Bhati, A. K. Bhattacharjee, B. Bhom, J. and Bianchi, L. Bianchi, N. Bianchin, C. Bielcik, J. and Bielcikova, J. Bilandzic, A. Biro, G. Biswas, R. Biswas, S. Bjelogrlic, S. Blair, J. T. Blau, D. Blume, C. and Bock, F. Bogdanov, A. Boggild, H. Boldizsar, L. Bombara, M. Bonora, M. Book, J. Borel, H. Borissov, A. Borri, M. Bossu, F. Botta, E. Bourjau, C. Braun-Munzinger, P. and Bregant, M. Breitner, T. Broker, T. A. Browning, T. A. and Broz, M. Brucken, E. J. Bruna, E. Bruno, G. E. and Budnikov, D. Buesching, H. Bufalino, S. Buncic, P. and Busch, O. Buthelezi, Z. Butt, J. B. Buxton, J. T. and Cabala, J. Caffarri, D. Cai, X. Caines, H. Diaz, L. Calero Caliva, A. Villar, E. Calvo Camerini, P. Carena, F. 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Vorobyev, I. Vranic, D. Vrlakova, J. and Vulpescu, B. Wagner, B. Wagner, J. Wang, H. Wang, M. and Watanabe, D. Watanabe, Y. Weber, M. Weber, S. G. Weiser, D. F. Wessels, J. P. Westerhoff, U. Whitehead, A. M. and Wiechula, J. Wikne, J. Wilk, G. Wilkinson, J. Willems, G. A. Williams, M. C. S. Windelband, B. Winn, M. Yalcin, S. Yang, P. Yano, S. Yin, Z. Yokoyama, H. Yoo, I. -K. Yoon, J. H. Yurchenko, V. Zaborowska, A. Zaccolo, V. and Zaman, A. Zampolli, C. Zanoli, H. J. C. Zaporozhets, S. and Zardoshti, N. Zarochentsev, A. Zavada, P. Zaviyalov, N. and Zbroszczyk, H. Zgura, I. S. Zhalov, M. Zhang, H. and Zhang, X. Zhang, Y. Zhang, C. Zhang, Z. Zhao, C. and Zhigareva, N. Zhou, D. Zhou, Y. Zhou, Z. Zhu, H. and Zhu, J. Zichichi, A. Zimmermann, A. Zimmermann, M. B. and Zinovjev, G. Zyzak, M. ALICE Collaboration
Subjects: High Energy Physics::Experiment, Nuclear Experiment
Abstract: The elliptic, triangular, quadrangular and pentagonal anisotropic flow coefficients for pi(+/-), K-+/- and p+p in Pb-Pb collisions at root sNN = 2.76TeV were measured with the ALICE detector at the Large Hadron Collider. The results were obtained with the Scalar Product method, correlating the identified hadrons with reference particles from a different pseudorapidity region. Effects not related to the common event symmetry planes (non-flow) were estimated using correlations in pp collisions and were subtracted from the measurement. The obtained flow coefficients exhibit a clear mass ordering for transverse momentum (pT) values below approximate to 3 GeV/c. In the intermediate pT region (3 < pT < 6 GeV/c), particles group at an approximate level according to the number of constituent quarks, suggesting that coalescence might be the relevant particle production mechanism in this region. The results for pT < 3 GeV/c are described fairly well by a hydrodynamical model (iEBE-VISHNU) that uses initial conditions generated by A Multi-Phase Transport model (AMPT) and describes the expansion of the fireball using a value of 0.08 for the ratio of shear viscosity to entropy density (eta/s), coupled to a hadronic cascade model (UrQMD). Finally, expectations from AMPT alone fail to quantitatively describe the measurements for all harmonics throughout the measured transverse momentum region. However, the comparison to the AMPT model highlights the importance of the late hadronic rescattering stage to the development of the observed mass ordering at low values of pT and of coalescence as a particle production mechanism for the particle type grouping at intermediate values of pT for all harmonics.
Published: 2016

38. Measurement of D-s(+) product ion and nuclear modification factor in Pb-Pb collisions at root S-NN=2.76 TeV

Author: Adam, J. Adamova, D. Aggarwal, M. M. Rinella, G. Aglieri and Agnello, M. Agrawal, N. Ahammed, Z. Ahn, S. U. Aiola, S. and Akindinov, A. Alam, S. N. Aleksandrov, D. Alessandro, B. and Alexandre, D. Alfaro Molina, R. Alici, A. Alkin, A. and Almaraz, J. R. M. Alme, J. Alt, T. Altinpinar, S. and Altsybeev, I. Alves Garcia Prado, C. Andrei, C. Andronic, A. and Anguelov, V. Anielski, J. Anticic, T. Antinori, F. and Antonioli, P. Aphecetche, L. Appelshaeuser, H. Arcelli, S. and Arnaldi, R. Arnold, O. W. Arsene, I. C. Arslandok, M. and Audurier, B. Augustinus, A. Averbeck, R. Azmi, M. D. and Badala, A. Baek, Y. W. Bagnasco, S. Bailhache, R. Bala, R. Baldisseri, A. Baral, R. C. Barbano, A. M. Barbera, R. Barile, F. Barnafoeldi, G. G. Barnby, L. S. Barret, V. Bartalini, P. Barth, K. Bartke, J. Bartsch, E. and Basile, M. Bastid, N. Basu, S. Bathen, B. Batigne, G. and Camejo, A. Batista Batyunya, B. Batzing, P. C. Bearden, I. G. Beck, H. Bedda, C. Behera, N. K. Belikov, I. and Bellini, F. Bello Martinez, H. Bellwied, R. Belmont, R. and Belmont-Moreno, E. Belyaev, V. Bencedi, G. Beole, S. and Berceanu, I. Bercuci, A. Berdnikov, Y. Berenyi, D. and Bertens, R. A. Berzano, D. Betev, L. Bhasin, A. Bhat, I. R. Bhati, A. K. Bhattacharjee, B. Bhom, J. Bianchi, L. and Bianchi, N. Bianchin, C. Bielcik, J. Bielcikova, J. and Bilandzic, A. Biswas, R. Biswas, S. Bjelogrlic, S. and Blair, J. T. Blau, D. Blume, C. Bock, F. Bogdanov, A. and Boggild, H. Boldizsar, L. Bombara, M. Book, J. and Borel, H. Borissov, A. Borri, M. Bossu, F. Botta, E. and Boettger, S. Bourjau, C. Braun-Munzinger, P. Bregant, M. and Breitner, T. Broker, T. A. Browning, T. A. Broz, M. and Brucken, E. J. Bruna, E. Bruno, G. E. Budnikov, D. and Buesching, H. Bufalino, S. Buncic, P. Busch, O. and Buthelezi, Z. Butt, J. B. Buxton, J. T. Caffarri, D. and Cai, X. Caines, H. Diaz, L. Calero Caliva, A. Calvo Villar, E. Camerini, P. Carena, F. Carena, W. and Carnesecchi, F. Castellanos, J. Castillo Castro, A. J. and Casula, E. A. R. Ceballos Sanchez, C. Cepila, J. Cerello, P. and Cerkala, J. Chang, B. Chapeland, S. Chartier, M. and Charvet, J. L. Chattopadhyay, S. Chattopadhyay, S. and Chelnokov, V. Cherney, M. Cheshkov, C. Cheynis, B. and Barroso, V. Chibante Chinellato, D. D. Cho, S. Chochula, P. and Choi, K. Chojnacki, M. Choudhury, S. Christakoglou, P. and Christensen, C. H. Christiansen, P. Chujo, T. Chung, S. U. Cicalo, C. Cifarelli, L. Cindolo, F. Cleymans, J. and Colamaria, F. Colella, D. Collu, A. Colocci, M. and Balbastre, G. Conesa del Valle, Z. Conesa Connors, M. E. and Contreras, J. G. Cormier, T. M. Morales, Y. Corrales Cortes Maldonado, I. Cortese, P. Cosentino, M. R. Costa, F. and Crochet, P. Cruz Albino, R. Cuautle, E. Cunqueiro, L. and Dahms, T. Dainese, A. Danu, A. Das, D. Das, I. Das, S. Dash, A. Dash, S. De, S. De Caro, A. de Cataldo, G. de Conti, C. de Cuveland, J. De Falco, A. De Gruttola, D. De Marco, N. De Pasquale, S. Deisting, A. and Deloff, A. Denes, E. Deplano, C. Dhankher, P. Di Bari, D. Di Mauro, A. Di Nezza, P. Diaz Corchero, M. A. and Dietel, T. Dillenseger, P. Divia, R. Djuvsland, O. and Dobrin, A. Gimenez, D. Domenicis Doenigus, B. Dordic, O. and Drozhzhova, T. Dubey, A. K. Dubla, A. Ducroux, L. and Dupieux, P. Ehlers, R. J. Elia, D. Engel, H. Epple, E. and Erazmus, B. Erdemir, I. Erhardt, F. Espagnon, B. and Estienne, M. Esumi, S. Eum, J. Evans, D. Evdokimov, S. and Eyyubova, G. Fabbietti, L. Fabris, D. Faivre, J. and Fantoni, A. Fasel, M. Feldkamp, L. Feliciello, A. and Feofilov, G. Ferencei, J. Fernandez Tellez, A. Ferreiro, E. G. Ferretti, A. Festanti, A. Feuillard, V. J. G. Figiel, J. Figueredo, M. A. S. Filchagin, S. Finogeev, D. and Fionda, F. M. Fiore, E. M. Fleck, M. G. Floris, M. and Foertsch, S. Foka, P. Fokin, S. Fragiacomo, E. and Francescon, A. Frankenfeld, U. Fuchs, U. Furget, C. and Furs, A. Girard, M. Fusco Gaardhoje, J. J. Gagliardi, M. and Gago, A. M. Gallio, M. Gangadharan, D. R. Ganoti, P. and Gao, C. Garabatos, C. Garcia-Solis, E. Gargiulo, C. and Gasik, P. Gauger, E. F. Germain, M. Gheata, A. Gheata, M. Ghosh, P. Ghosh, S. K. Gianotti, P. Giubellino, P. and Giubilato, P. Gladysz-Dziadus, E. Glaessel, P. Gomez Coral, D. M. Ramirez, A. Gomez Gonzalez, V. Gonzalez-Zamora, P. Gorbunov, S. Goerlich, L. Gotovac, S. Grabski, V. and Grachov, O. A. Graczykowski, L. K. Graham, K. L. Grelli, A. and Grigoras, A. Grigoras, C. Grigoriev, V. Grigoryan, A. and Grigoryan, S. Grinyov, B. Grion, N. Gronefeld, J. M. and Grosse-Oetringhaus, J. F. Grossiord, J. -Y. Grosso, R. and Guber, F. Guernane, R. Guerzoni, B. Gulbrandsen, K. and Gunji, T. Gupta, A. Gupta, R. Haake, R. Haaland, O. and Hadjidakis, C. Haiduc, M. Hamagaki, H. Hamar, G. Harris, J. W. Harton, A. Hatzifotiadou, D. Hayashi, S. Heckel, S. T. Heide, M. Helstrup, H. Herghelegiu, A. Herrera Corral, G. Hess, B. A. Hetland, K. F. Hillemanns, H. and Hippolyte, B. Hosokawa, R. Hristov, P. Huang, M. and Humanic, T. J. Hussain, N. Hussain, T. Hutter, D. Hwang, D. S. Ilkaev, R. Inaba, M. Innocenti, G. M. Ippolitov, M. Irfan, M. Ivanov, M. Ivanov, V. Izucheev, V. and Jacobs, P. M. Jadhav, M. B. Jadlovska, S. Jadlovsky, J. and Jahnke, C. Jakubowska, M. J. Jang, H. J. Janik, M. A. and Jayarathna, P. H. S. Y. Jena, C. Jena, S. Bustamante, R. T. Jimenez Jones, P. G. Jung, H. Jusko, A. Kalinak, P. and Kalweit, A. Kamin, J. Kang, J. H. Kaplin, V. Kar, S. and Uysal, A. Karasu Karavichev, O. Karavicheva, T. Karayan, L. and Karpechev, E. Kebschull, U. Keidel, R. Keijdener, D. L. D. Keil, M. Khan, M. Mohisin Khan, P. Khan, S. A. and Khanzadeev, A. Kharlov, Y. Kileng, B. Kim, D. W. Kim, D. J. Kim, D. Kim, H. Kim, J. S. Kim, M. Kim, M. and Kim, S. Kim, T. Kirsch, S. Kisel, I. Kiselev, S. and Kisiel, A. Kiss, G. Klay, J. L. Klein, C. Klein, J. and Klein-Boesing, C. Klewin, S. Kluge, A. Knichel, M. L. and Knospe, A. G. Kobayashi, T. Kobdaj, C. Kofarago, M. and Kollegger, T. Kolojvari, A. Kondratiev, V. Kondratyeva, N. and Kondratyuk, E. Konevskikh, A. Kopcik, M. Kour, M. and Kouzinopoulos, C. Kovalenko, O. Kovalenko, V. Kowalski, M. and Meethaleveedu, G. Koyithatta Kralik, I. Kravcakova, A. and Kretz, M. Krivda, M. Krizek, F. Kryshen, E. Krzewicki, M. Kubera, A. M. Kucera, V. Kuhn, C. Kuijer, P. G. and Kumar, A. Kumar, J. Kumar, L. Kumar, S. Kurashvili, P. and Kurepin, A. Kurepin, A. B. Kuryakin, A. Kweon, M. J. and Kwon, Y. La Pointe, S. L. La Rocca, P. Ladron de Guevara, P. and Lagana Fernandes, C. Lakomov, I. Langoy, R. Lara, C. and Lardeux, A. Lattuca, A. Laudi, E. Lea, R. Leardini, L. and Lee, G. R. Lee, S. Lehas, F. Lemmon, R. C. Lenti, V. and Leogrande, E. Leon Monzon, I. Leon Vargas, H. Leoncino, M. Levai, P. Li, S. Li, X. Lien, J. Lietava, R. and Lindal, S. Lindenstruth, V. Lippmann, C. Lisa, M. A. and Ljunggren, H. M. Lodato, D. F. Loenne, P. I. Loginov, V. and Loizides, C. Lopez, X. Lopez Torres, E. Lowe, A. and Luettig, P. Lunardon, M. Luparello, G. Maevskaya, A. and Mager, M. Mahajan, S. Mahmood, S. M. Maire, A. Majka, R. D. Malaev, M. Maldonado Cervantes, I. Malinina, L. and Mal'Kevich, D. Malzacher, P. Mamonov, A. Manko, V. and Manso, F. Manzari, V. Marchisone, M. Mares, J. and Margagliotti, G. V. Margotti, A. Margutti, J. Marin, A. and Markert, C. Marquard, M. Martin, N. A. Martin Blanco, J. and Martinengo, P. Martinez, M. I. Martinez Garcia, G. Martinez Pedreira, M. Mas, A. Masciocchi, S. Masera, M. Masoni, A. Massacrier, L. Mastroserio, A. Matyja, A. Mayer, C. and Mazer, J. Mazzoni, M. A. Mcdonald, D. Meddi, F. and Melikyan, Y. Menchaca-Rocha, A. Meninno, E. Mercado Perez, J. Meres, M. Miake, Y. Mieskolainen, M. M. Mikhaylov, K. and Milano, L. Milosevic, J. Minervini, L. M. Mischke, A. and Mishra, A. N. Miskowiec, D. Mitra, J. Mitu, C. M. and Mohammadi, N. Mohanty, B. Molnar, L. Montano Zetina, L. and Montes, E. Moreira De Godoy, D. A. Moreno, L. A. P. Moretto, S. Morreale, A. Morsch, A. Muccifora, V. Mudnic, E. and Muehlheim, D. Muhuri, S. Mukherjee, M. Mulligan, J. D. and Munhoz, M. G. Munzer, R. H. Murray, S. Musa, L. and Musinsky, J. Naik, B. Nair, R. Nandi, B. K. Nania, R. and Nappi, E. Naru, M. U. da Luz, H. Natal Nattrass, C. and Nayak, K. Nayak, T. K. Nazarenko, S. Nedosekin, A. and Nellen, L. Ng, F. Nicassio, M. Niculescu, M. Niedziela, J. Nielsen, B. S. Nikolaev, S. Nikulin, S. Nikulin, V. and Noferini, F. Nomokonov, P. Nooren, G. Noris, J. C. C. and Norman, J. Nyanin, A. Nystrand, J. Oeschler, H. Oh, S. Oh, S. K. Ohlson, A. Okatan, A. Okubo, T. Olah, L. Oleniacz, J. Oliveira Da Silva, A. C. Oliver, M. H. and Onderwaater, J. Oppedisano, C. Orava, R. Ortiz Velasquez, A. and Oskarsson, A. Otwinowski, J. Oyama, K. Ozdemir, M. and Pachmayer, Y. Pagano, P. Paic, G. Pal, S. K. Pan, J. and Pandey, A. K. Papcun, P. Papikyan, V. Pappalardo, G. S. and Pareek, P. Park, W. J. Parmar, S. Passfeld, A. and Paticchio, V. Patra, R. N. Paul, B. Peitzmann, T. and Pereira Da Costa, H. Pereira De Oliveira Filho, E. Peresunko, D. and Perez Lara, C. E. Perez Lezama, E. Peskov, V. Pestov, Y. and Petracek, V. Petrov, V. Petrovici, M. Petta, C. and Piano, S. Pikna, M. Pillot, P. Pinazza, O. Pinsky, L. and Piyarathna, D. B. Ploskon, M. Planinic, M. Pluta, J. and Pochybova, S. Podesta-Lerma, P. L. M. Poghosyan, M. G. and Polichtchouk, B. Poljak, N. Poonsawat, W. Pop, A. and Porteboeuf-Houssais, S. Porter, J. Pospisil, J. Prasad, S. K. Preghenella, R. Prino, F. Pruneau, C. A. Pshenichnov, I. Puccio, M. Puddu, G. Pujahari, P. Punin, V. and Putschke, J. Qvigstad, H. Rachevski, A. Raha, S. Rajput, S. Rak, J. Rakotozafindrabe, A. Ramello, L. Rami, F. and Raniwala, R. Raniwala, S. Rasanen, S. S. Rascanu, B. T. and Rathee, D. Read, K. F. Redlich, K. Reed, R. J. Rehman, A. Reichelt, P. Reidt, F. Ren, X. Renfordt, R. and Reolon, A. R. Reshetin, A. Revol, J. -P. Reygers, K. and Riabov, V. Ricci, R. A. Richert, T. Richter, M. Riedler, P. Riegler, W. Riggi, F. Ristea, C. Rocco, E. and Rodriguez Cahuantzi, M. Rodriguez Manso, A. Roed, K. and Rogochaya, E. Rohr, D. Roehrich, D. Romita, R. and Ronchetti, F. Ronflette, L. Rosnet, P. Rossi, A. and Roukoutakis, F. Roy, A. Roy, C. Roy, P. Rubio Montero, A. J. Rui, R. Russo, R. Ryabinkin, E. Ryabov, Y. and Rybicki, A. Sadovsky, S. Safarik, K. Sahlmuller, B. and Sahoo, P. Sahoo, R. Sahoo, S. Sahu, P. K. Saini, J. and Sakai, S. Saleh, M. A. Salzwedel, J. Sambyal, S. and Samsonov, V. Sandor, L. Sandoval, A. Sano, M. Sarkar, D. and Scapparone, E. Scarlassara, F. Schiaua, C. Schicker, R. and Schmidt, C. Schmidt, H. R. Schuchmann, S. Schukraft, J. and Schulc, M. Schuster, T. Schutz, Y. Schwarz, K. and Schweda, K. Scioli, G. Scomparin, E. Scott, R. Sefcik, M. Seger, J. E. Sekiguchi, Y. Sekihata, D. Selyuzhenkov, I. Senosi, K. Senyukov, S. Serradilla, E. Sevcenco, A. and Shabanov, A. Shabetai, A. Shadura, O. Shahoyan, R. and Shangaraev, A. Sharma, A. Sharma, M. Sharma, M. Sharma, N. Shigaki, K. Shtejer, K. Sibiriak, Y. Siddhanta, S. and Sielewicz, K. M. Siemiarczuk, T. Silvermyr, D. and Silvestre, C. Simatovic, G. Simonetti, G. Singaraju, R. and Singh, R. Singha, S. Singhal, V. Sinha, B. C. Sinha, T. and Sitar, B. Sitta, M. Skaali, T. B. Slupecki, M. and Smirnov, N. Snellings, R. J. M. Snellman, T. W. Sogaard, C. and Song, J. Song, M. Song, Z. Soramel, F. Sorensen, S. and Sozzi, F. Spacek, M. Spiriti, E. Sputowska, I. and Spyropoulou-Stassinaki, M. Stachel, J. Stan, I. Stefanek, G. and Stenlund, E. Steyn, G. Stiller, J. H. Stocco, D. and Strmen, P. Suaide, A. A. P. Sugitate, T. Suire, C. and Suleymanov, M. Suljic, M. Sultanov, R. Sumbera, M. and Szabo, A. Szanto de Toledo, A. Szarka, I. Szczepankiewicz, A. Szymanski, M. Tabassam, U. Takahashi, J. Tambave, G. J. Tanaka, N. Tangaro, M. A. Tarhini, M. Tariq, M. and Tarzila, M. G. Tauro, A. Tejeda Munoz, G. Telesca, A. and Terasaki, K. Terrevoli, C. Teyssier, B. Thaeder, J. and Thomas, D. Tieulent, R. Timmins, A. R. Toia, A. Trogolo, S. Trombetta, G. Trubnikov, V. Trzaska, W. H. Tsuji, T. and Tumkin, A. Turrisi, R. Tveter, T. S. Ullaland, K. and Uras, A. Usai, G. L. Utrobicic, A. Vajzer, M. Vala, M. and Valencia Palomo, L. Vallero, S. Van der Maarel, J. Van Hoorne, J. W. van Leeuwen, M. Vanat, T. Vande Vyvre, P. and Varga, D. Vargas, A. Vargyas, M. Varma, R. Vasileiou, M. and Vasiliev, A. Vauthier, A. Vechernin, V. Veen, A. M. and Veldhoen, M. Velure, A. Venaruzzo, M. Vercellin, E. and Vergara Limon, S. Vernet, R. Verweij, M. Vickovic, L. and Viesti, G. Viinikainen, J. Vilakazi, Z. Villalobos Baillie, O. Villatoro Tello, A. Vinogradov, A. Vinogradov, L. and Vinogradov, Y. Virgili, T. Vislavicius, V. Viyogi, Y. P. and Vodopyanov, A. Voelkl, M. A. Voloshin, K. Voloshin, S. A. and Volpe, G. von Haller, B. Vorobyev, I. Vranic, D. and Vrlakova, J. Vulpescu, B. Vyushin, A. Wagner, B. Wagner, J. Wang, H. Wang, M. Watanabe, D. Watanabe, Y. and Weber, M. Weber, S. G. Weiser, D. F. Wessels, J. P. and Westerhoff, U. Whitehead, A. M. Wiechula, J. Wikne, J. and Wilde, M. Wilk, G. Wilkinson, J. Williams, M. C. S. and Windelband, B. Winn, M. Yaldo, C. G. Yang, H. Yang, P. and Yano, S. Yasar, C. Yin, Z. Yokoyama, H. Yoo, I. -K. and Yoon, J. H. Yurchenko, V. Yushmanov, I. Zaborowska, A. and Zaccolo, V. Zaman, A. Zampolli, C. Zanoli, H. J. C. and Zaporozhets, S. Zardoshti, N. Zarochentsev, A. Zavada, P. and Zaviyalov, N. Zbroszczyk, H. Zgura, I. S. Zhalov, M. and Zhang, H. Zhang, X. Zhang, Y. Zhang, C. Zhang, Z. and Zhao, C. Zhigareva, N. Zhou, D. Zhou, Y. Zhou, Z. and Zhu, H. Zhu, J. Zichichi, A. Zimmermann, A. Zimmermann, M. B. Zinovjev, G. Zyzak, M. ALICE Collaboration
Subjects: Nuclear Theory, High Energy Physics::Experiment, Nuclear Experiment
Abstract: The production of prompt D-s(+) mesons was measured for the first time in collisions of heavy nuclei with the ALICE detector at the LHC. The analysis was performed on a data sample of Pb-Pb collisions at a centre-of-mass energy per nucleon pair, root s(NN), of 2.76 TeV in two different centrality classes, namely 0-10% and 20-50%. D-s(+) mesons and their antiparticles were reconstructed at mid-rapidity from their hadronic decay channel D-s(+) -> phi pi(+), with phi -> K-K+, in the transverse momentum intervals 4 < p(T) < 12 GeV/c and 6 < p(T) < 12 GeV/c for the 0-10% and 20-50% centrality classes, respectively. The nuclear modi fication factor R-AA was computed by comparing the p(T)-differential production yields in Pb-Pb collisions to those in proton-proton (pp) collisions at the same energy. This pp reference was obtained using the cross section measured at root s = 7 TeV and scaled to root s = 2.76TeV. The R-AA of D-s(+) mesons was compared to that of non-strange D mesons in the 10% most central Pb-Pb collisions. At high p(T) (8 < p(T) < 12 GeV/c) a suppression of the D-s(+)-meson yield by a factor of about three, compatible within uncertainties with that of non-strange D mesons, is observed. At lower p(T) (4 < p(T) < 8 GeV/c) the values of the D-s(+)-meson R-AA are larger than those of non-strange D mesons, although compatible within uncertainties. The production ratios D-s(+)/D-0 and D-s(+)/D+ were also measured in Pb-Pb collisions and compared to their values in proton-proton collisions.
Published: 2016

39. Transverse momentum dependence of D-meson production in Pb-Pb collisions at root S-NN=2.76 TeV

Author: Adam, J. Adamova, D. Aggarwal, M. M. Rinella, G. Aglieri and Agnello, M. Agrawal, N. Ahammed, Z. Ahn, S. U. Aiola, S. and Akindinov, A. Alam, S. N. Aleksandrov, D. Alessandro, B. and Alexandre, D. Alfaro Molina, R. Alici, A. Alkin, A. and Almaraz, J. R. M. Alme, J. Alt, T. Altinpinar, S. and Altsybeev, I. Alves Garcia Prado, C. Andrei, C. Andronic, A. and Anguelov, V. Anielski, J. Anticic, T. Antinori, F. and Antonioli, P. Aphecetche, L. Appelshaeuser, H. Arcelli, S. and Arnaldi, R. Arnold, O. W. Arsene, I. C. Arslandok, M. and Audurier, B. Augustinus, A. Averbeck, R. Azmi, M. D. and Badala, A. Baek, Y. W. Bagnasco, S. Bailhache, R. Bala, R. Baldisseri, A. Baral, R. C. Barbano, A. M. Barbera, R. Barile, F. Barnafoeldi, G. G. Barnby, L. S. Barret, V. Bartalini, P. Barth, K. Bartke, J. Bartsch, E. and Basile, M. Bastid, N. Basu, S. Bathen, B. Batigne, G. and Camejo, A. Batista Batyunya, B. Batzing, P. C. Bearden, I. G. Beck, H. Bedda, C. Behera, N. K. Belikov, I. and Bellini, F. Bello Martinez, H. Bellwied, R. Belmont, R. and Belmont-Moreno, E. Belyaev, V. Bencedi, G. Beole, S. and Berceanu, I. Bercuci, A. Berdnikov, Y. Berenyi, D. and Bertens, R. A. Berzano, D. Betev, L. Bhasin, A. Bhat, I. R. Bhati, A. K. Bhattacharjee, B. Bhom, J. Bianchi, L. and Bianchi, N. Bianchin, C. Bielcik, J. Bielcikova, J. and Bilandzic, A. Biswas, R. Biswas, S. Bjelogrlic, S. and Blair, J. T. Blau, D. Blume, C. Bock, F. Bogdanov, A. and Boggild, H. Boldizsar, L. Bombara, M. Book, J. and Borel, H. Borissov, A. Borri, M. Bossu, F. Botta, E. and Boettger, S. Bourjau, C. Braun-Munzinger, P. Bregant, M. and Breitner, T. Broker, T. A. Browning, T. A. Broz, M. and Brucken, E. J. Bruna, E. Bruno, G. E. Budnikov, D. and Buesching, H. Bufalino, S. Buncic, P. Busch, O. and Buthelezi, Z. Butt, J. B. Buxton, J. T. Caffarri, D. and Cai, X. Caines, H. Diaz, L. Calero Caliva, A. Calvo Villar, E. Camerini, P. Carena, F. Carena, W. and Carnesecchi, F. Castellanos, J. Castillo Castro, A. J. and Casula, E. A. R. Ceballos Sanchez, C. Cepila, J. Cerello, P. and Cerkala, J. Chang, B. Chapeland, S. Chartier, M. and Charvet, J. L. Chattopadhyay, S. Chattopadhyay, S. and Chelnokov, V. Cherney, M. Cheshkov, C. Cheynis, B. and Barroso, V. Chibante Chinellato, D. D. Cho, S. Chochula, P. and Choi, K. Chojnacki, M. Choudhury, S. Christakoglou, P. and Christensen, C. H. Christiansen, P. Chujo, T. Chung, S. U. Cicalo, C. Cifarelli, L. Cindolo, F. Cleymans, J. and Colamaria, F. Colella, D. Collu, A. Colocci, M. and Balbastre, G. Conesa del Valle, Z. Conesa Connors, M. E. and Contreras, J. G. Cormier, T. M. Morales, Y. Corrales Cortes Maldonado, I. Cortese, P. Cosentino, M. R. Costa, F. and Crochet, P. Cruz Albino, R. Cuautle, E. Cunqueiro, L. and Dahms, T. Dainese, A. Danu, A. Das, D. Das, I. Das, S. Dash, A. Dash, S. De, S. De Caro, A. de Cataldo, G. de Conti, C. de Cuveland, J. De Falco, A. De Gruttola, D. De Marco, N. De Pasquale, S. Deisting, A. and Deloff, A. Denes, E. Deplano, C. Dhankher, P. Di Bari, D. Di Mauro, A. Di Nezza, P. Diaz Corchero, M. A. and Dietel, T. Dillenseger, P. Divia, R. Djuvsland, O. and Dobrin, A. Domenicis Gimenez, D. Doenigus, B. Dordic, O. and Drozhzhova, T. Dubey, A. K. Dubla, A. Ducroux, L. and Dupieux, P. Ehlers, R. J. Elia, D. Engel, H. Epple, E. and Erazmus, B. Erdemir, I. Erhardt, F. Espagnon, B. and Estienne, M. Esumi, S. Eum, J. Evans, D. Evdokimov, S. and Eyyubova, G. Fabbietti, L. Fabris, D. Faivre, J. and Fantoni, A. Fasel, M. Feldkamp, L. Feliciello, A. and Feofilov, G. Ferencei, J. Fernandez Tellez, A. Ferreiro, E. G. Ferretti, A. Festanti, A. Feuillard, V. J. G. Figiel, J. Figueredo, M. A. S. Filchagin, S. Finogeev, D. and Fionda, F. M. Fiore, E. M. Fleck, M. G. Floris, M. and Foertsch, S. Foka, P. Fokin, S. Fragiacomo, E. and Francescon, A. Frankenfeld, U. Fuchs, U. Furget, C. and Furs, A. Girard, M. Fusco Gaardhoje, J. J. Gagliardi, M. and Gago, A. M. Gallio, M. Gangadharan, D. R. Ganoti, P. and Gao, C. Garabatos, C. Garcia-Solis, E. Gargiulo, C. and Gasik, P. Gauger, E. F. Germain, M. Gheata, A. Gheata, M. Ghosh, P. Ghosh, S. K. Gianotti, P. Giubellino, P. and Giubilato, P. Gladysz-Dziadus, E. Glaessel, P. Gomez Coral, D. M. Ramirez, A. Gomez Gonzalez, V. Gonzalez-Zamora, P. Gorbunov, S. Goerlich, L. Gotovac, S. Grabski, V. and Grachov, O. A. Graczykowski, L. K. Graham, K. L. Grelli, A. and Grigoras, A. Grigoras, C. Grigoriev, V. Grigoryan, A. and Grigoryan, S. Grinyov, B. Grion, N. Gronefeld, J. M. and Grosse-Oetringhaus, J. F. Grossiord, J. -Y. Grosso, R. and Guber, F. Guernane, R. Guerzoni, B. Gulbrandsen, K. and Gunji, T. Gupta, A. Gupta, R. Haake, R. Haaland, O. and Hadjidakis, C. Haiduc, M. Hamagaki, H. Hamar, G. Harris, J. W. Harton, A. Hatzifotiadou, D. Hayashi, S. Heckel, S. T. Heide, M. Helstrup, H. Herghelegiu, A. Herrera Corral, G. Hess, B. A. Hetland, K. F. Hillemanns, H. and Hippolyte, B. Hosokawa, R. Hristov, P. Huang, M. and Humanic, T. J. Hussain, N. Hussain, T. Hutter, D. Hwang, D. S. Ilkaev, R. Inaba, M. Ippolitov, M. Irfan, M. and Ivanov, M. Ivanov, V. Izucheev, V. Jacobs, P. M. Jadhav, M. B. Jadlovska, S. Jadlovsky, J. Jahnke, C. Jakubowska, M. J. Jang, H. J. Janik, M. A. Jayarathna, P. H. S. Y. and Jena, C. Jena, S. Bustamante, R. T. Jimenez Jones, P. G. and Jung, H. Jusko, A. Kalinak, P. Kalweit, A. Kamin, J. and Kang, J. H. Kaplin, V. Kar, S. Uysal, A. Karasu and Karavichev, O. Karavicheva, T. Karayan, L. Karpechev, E. and Kebschull, U. Keidel, R. Keijdener, D. L. D. Keil, M. and Khan, M. Mohisin Khan, P. Khan, S. A. Khanzadeev, A. and Kharlov, Y. Kileng, B. Kim, D. W. Kim, D. J. Kim, D. and Kim, H. Kim, J. S. Kim, M. Kim, M. Kim, S. Kim, T. and Kirsch, S. Kisel, I. Kiselev, S. Kisiel, A. Kiss, G. and Klay, J. L. Klein, C. Klein, J. Klein-Boesing, C. and Klewin, S. Kluge, A. Knichel, M. L. Knospe, A. G. and Kobayashi, T. Kobdaj, C. Kofarago, M. Kollegger, T. and Kolojvari, A. Kondratiev, V. Kondratyeva, N. Kondratyuk, E. and Konevskikh, A. Kopcik, M. Kour, M. Kouzinopoulos, C. and Kovalenko, O. Kovalenko, V. Kowalski, M. Meethaleveedu, G. Koyithatta Kralik, I. Kravcakova, A. Kretz, M. Krivda, M. Krizek, F. Kryshen, E. Krzewicki, M. Kubera, A. M. and Kucera, V. Kuhn, C. Kuijer, P. G. Kumar, A. Kumar, J. Kumar, L. Kumar, S. Kurashvili, P. Kurepin, A. and Kurepin, A. B. Kuryakin, A. Kweon, M. J. Kwon, Y. La Pointe, S. L. La Rocca, P. Ladron de Guevara, P. Lagana Fernandes, C. Lakomov, I. Langoy, R. Lara, C. Lardeux, A. Lattuca, A. Laudi, E. Lea, R. Leardini, L. Lee, G. R. Lee, S. Lehas, F. Lemmon, R. C. Lenti, V. and Leogrande, E. Leon Monzon, I. Leon Vargas, H. Leoncino, M. and Levai, P. Li, S. Li, X. Lien, J. Lietava, R. and Lindal, S. Lindenstruth, V. Lippmann, C. Lisa, M. A. and Ljunggren, H. M. Lodato, D. F. Loenne, P. I. Loginov, V. and Loizides, C. Lopez, X. Lopez Torres, E. Lowe, A. and Luettig, P. Lunardon, M. Luparello, G. Maevskaya, A. and Mager, M. Mahajan, S. Mahmood, S. M. Maire, A. Majka, R. D. Malaev, M. Maldonado Cervantes, I. Malinina, L. and Mal'Kevich, D. Malzacher, P. Mamonov, A. Manko, V. and Manso, F. Manzari, V. Marchisone, M. Mares, J. and Margagliotti, G. V. Margotti, A. Margutti, J. Marin, A. and Markert, C. Marquard, M. Martin, N. A. Blanco, J. Martin and Martinengo, P. Martinez, M. I. Garcia, G. Martinez Pedreira, M. Martinez Mas, A. Masciocchi, S. Masera, M. Masoni, A. and Massacrier, L. Mastroserio, A. Matyja, A. Mayer, C. and Mazer, J. Mazzoni, M. A. Mcdonald, D. Meddi, F. and Melikyan, Y. Menchaca-Rocha, A. Meninno, E. Perez, J. Mercado Meres, M. Miake, Y. Mieskolainen, M. M. and Mikhaylov, K. Milano, L. Milosevic, J. Minervini, L. M. and Mischke, A. Mishra, A. N. Miskowiec, D. Mitra, J. Mitu, C. M. Mohammadi, N. Mohanty, B. Molnar, L. Montano Zetina, L. Montes, E. De Godoy, D. A. Moreira Moreno, L. A. P. Moretto, S. Morreale, A. Morsch, A. Muccifora, V. and Mudnic, E. Muehlheim, D. Muhuri, S. Mukherjee, M. and Mulligan, J. D. Munhoz, M. G. Munzer, R. H. Murray, S. and Musa, L. Musinsky, J. Naik, B. Nair, R. Nandi, B. K. and Nania, R. Nappi, E. Naru, M. U. Natal da Luz, H. and Nattrass, C. Nayak, K. Nayak, T. K. Nazarenko, S. and Nedosekin, A. Nellen, L. Ng, F. Nicassio, M. Niculescu, M. Niedziela, J. Nielsen, B. S. Nikolaev, S. Nikulin, S. and Nikulin, V. Noferini, F. Nomokonov, P. Nooren, G. and Noris, J. C. C. Norman, J. Nyanin, A. Nystrand, J. and Oeschler, H. Oh, S. Oh, S. K. Ohlson, A. Okatan, A. and Okubo, T. Olah, L. Oleniacz, J. Oliveira Da Silva, A. C. and Oliver, M. H. Onderwaater, J. Oppedisano, C. Orava, R. and Ortiz Velasquez, A. Oskarsson, A. Otwinowski, J. Oyama, K. and Ozdemir, M. Pachmayer, Y. Pagano, P. Paic, G. Pal, S. K. Pan, J. Pandey, A. K. Papcun, P. Papikyan, V. and Pappalardo, G. S. Pareek, P. Park, W. J. Parmar, S. and Passfeld, A. Paticchio, V. Patra, R. N. Paul, B. and Peitzmann, T. Da Costa, H. Pereira Pereira De Oliveira Filho, E. and Peresunko, D. Lara, C. E. Perez Lara, C. E. Perez and Lezama, E. Perez Peskov, V. Pestov, Y. Petracek, V. and Petrov, V. Petrovici, M. Petta, C. Piano, S. Pikna, M. and Pillot, P. Pinazza, O. Pinsky, L. Piyarathna, D. B. and Ploskon, M. Planinic, M. Pluta, J. Pochybova, S. and Podesta-Lerma, P. L. M. Poghosyan, M. G. Polichtchouk, B. and Poljak, N. Poonsawat, W. Pop, A. Porteboeuf-Houssais, S. and Porter, J. Pospisil, J. Prasad, S. K. Preghenella, R. and Prino, F. Pruneau, C. A. Pshenichnov, I. Puccio, M. and Puddu, G. Pujahari, P. Punin, V. Putschke, J. Qvigstad, H. Rachevski, A. Raha, S. Rajput, S. Rak, J. and Rakotozafindrabe, A. Ramello, L. Rami, F. Raniwala, R. and Raniwala, S. Rasanen, S. S. Rascanu, B. T. Rathee, D. and Read, K. F. Redlich, K. Reed, R. J. Rehman, A. Reichelt, P. Reidt, F. Ren, X. Renfordt, R. Reolon, A. R. and Reshetin, A. Revol, J. -P. Reygers, K. Riabov, V. Ricci, R. A. Richert, T. Richter, M. Riedler, P. Riegler, W. and Riggi, F. Ristea, C. Rocco, E. Rodriguez Cahuantzi, M. and Manso, A. Rodriguez Roed, K. Rogochaya, E. Rohr, D. and Rohrich, D. Romita, R. Ronchetti, F. Ette, L. Ron and Rosnet, P. Rossi, A. Roukoutakis, F. Roy, A. Roy, C. and Roy, P. Rubio Montero, A. J. Rui, R. Russo, R. and Ryabinkin, E. Ryabov, Y. Rybicki, A. Sadovsky, S. and Safarik, K. Sahlmuller, B. Sahoo, P. Sahoo, R. Sahoo, S. and Sahu, P. K. Saini, J. Sakai, S. Saleh, M. A. and Salzwedel, J. Sambyal, S. Samsonov, V. Sandor, L. and Sandoval, A. Sano, M. Sarkar, D. Scapparone, E. and Scarlassara, F. Schiaua, C. Schicker, R. Schmidt, C. and Schmidt, H. R. Schuchmann, S. Schukraft, J. Schulc, M. and Schuster, T. Schutz, Y. Schwarz, K. Schweda, K. Scioli, G. Scomparin, E. Scott, R. Sefcik, M. Seger, J. E. and Sekiguchi, Y. Sekihata, D. Selyuzhenkov, I. Senosi, K. and Senyukov, S. Serradilla, E. Sevcenco, A. Shabanov, A. and Shabetai, A. Shadura, O. Shahoyan, R. Shangaraev, A. and Sharma, A. Sharma, M. Sharma, M. Sharma, N. Shigaki, K. and Shtejer, K. Sibiriak, Y. Siddhanta, S. Sielewicz, K. M. and Siemiarczuk, T. Silvermyr, D. Silvestre, C. Simatovic, G. Simonetti, G. Singaraju, R. Singh, R. Singha, S. and Singhal, V. Sinha, B. C. Sinha, T. Sitar, B. Sitta, M. and Skaali, T. B. Slupecki, M. Smirnov, N. Snellings, R. J. M. Snellman, T. W. Sogaard, C. Song, J. Song, M. and Song, Z. Soramel, F. Sorensen, S. Sozzi, F. Spacek, M. and Spiriti, E. Sputowska, I. Spyropoulou-Stassinaki, M. and Stachel, J. Stan, I. Stefanek, G. Stenlund, E. Steyn, G. and Stiller, J. H. Stocco, D. Strmen, P. Suaide, A. A. P. and Sugitate, T. Suire, C. Suleymanov, M. Suljic, M. and Sultanov, R. Sumbera, M. Szabo, A. Szanto de Toledo, A. and Szarka, I. Szczepankiewicz, A. Szymanski, M. Tabassam, U. and Takahashi, J. Tambave, G. J. Tanaka, N. Tangaro, M. A. and Tarhini, M. Tariq, M. Tarzila, M. G. Tauro, A. and Tejeda Munoz, G. Telesca, A. Terasaki, K. Terrevoli, C. and Teyssier, B. Thaeder, J. Thomas, D. Tieulent, R. and Timmins, A. R. Toia, A. Trogolo, S. Trombetta, G. and Trubnikov, V. Trzaska, W. H. Tsuji, T. Tumkin, A. and Turrisi, R. Tveter, T. S. Ullaland, K. Uras, A. Usai, G. L. Utrobicic, A. Vajzer, M. Vala, M. Palomo, L. Valencia and Vallero, S. Van der Maarel, J. Van Hoorne, J. W. van Leeuwen, M. Vanat, T. Vande Vyvre, P. Varga, D. Vargas, A. Vargyas, M. Varma, R. Vasileiou, M. Vasiliev, A. and Vauthier, A. Vechernin, V. Veen, A. M. Veldhoen, M. and Velure, A. Venaruzzo, M. Vercellin, E. Vergara Limon, S. and Vernet, R. Verweij, M. Vickovic, L. Viesti, G. and Viinikainen, J. Vilakazi, Z. Baillie, O. Villalobos and Villatoro Tello, A. Vinogradov, A. Vinogradov, L. and Vinogradov, Y. Virgili, T. Vislavicius, V. Viyogi, Y. P. and Vodopyanov, A. Voelkl, M. A. Voloshin, K. Voloshin, S. A. and Volpe, G. von Haller, B. Vorobyev, I. Vranic, D. and Vrlakova, J. Vulpescu, B. Vyushin, A. Wagner, B. Wagner, J. Wang, H. Wang, M. Watanabe, D. Watanabe, Y. and Weber, M. Weber, S. G. Weiser, D. F. Wessels, J. P. and Westerhoff, U. Whitehead, A. M. Wiechula, J. Wikne, J. and Wilde, M. Wilk, G. Wilkinson, J. Williams, M. C. S. and Windelband, B. Winn, M. Yaldo, C. G. Yang, H. Yang, P. and Yano, S. Yasar, C. Yin, Z. Yokoyama, H. Yoo, I. -K. and Yoon, J. H. Yurchenko, V. Yushmanov, I. Zaborowska, A. and Zaccolo, V. Zaman, A. Zampolli, C. Zanoli, H. J. C. and Zaporozhets, S. Zardoshti, N. Zarochentsev, A. Zavada, P. and Zaviyalov, N. Zbroszczyk, H. Zgura, I. S. Zhalov, M. and Zhang, H. Zhang, X. Zhang, Y. Zhang, C. Zhang, Z. and Zhao, C. Zhigareva, N. Zhou, D. Zhou, Y. Zhou, Z. and Zhu, H. Zhu, J. Zichichi, A. Zimmermann, A. Zimmermann, M. B. Zinovjev, G. Zyzak, M. ALICE Collaboration
Subjects: High Energy Physics::Experiment, Nuclear Experiment
Abstract: The production of prompt charmed mesons D-0, D+ and D*(+), and their antiparticles, was measured with the ALICE detector in Pb-Pb collisions at the centre-of-mass energy per nucleon pair, root s(NN), of 2.76 TeV. The production yields for rapidity vertical bar y vertical bar < 0.5 are presented as a function of transverse momentum, p(T), in the interval 1-36 GeV/c for the centrality class 0-10% and in the interval 1-16 GeV/c for the centrality class 30-50%. The nuclear modification factor R-AA was computed using a proton-proton reference at root s = 2.76 TeV, based on measurements at root s = 7 TeV and on theoretical calculations. A maximum suppression by a factor of 5-6 with respect to binary-scaled pp yields is observed for the most central collisions at p(T) of about 10 GeV/c. A suppression by a factor of about 2-3 persists at the highest p(T) covered by the measurements. At low p(T) (1-3 GeV/c), the R-AA has large uncertainties that span the range 0.35 (factor of about 3 suppression) to 1 (no suppression). In all p(T) intervals, the R-AA is larger in the 30-50% centrality class compared to central collisions. The D-meson R-AA is also compared with that of charged pions and, at large p(T), charged hadrons, and with model calculations.
Published: 2016

40. Measurement of an Excess in the Yield of J/psi at Very Low p(T) in Pb-Pb Collisions at root s(NN)=2.76 TeV

Author: Adam, J. Adamova, D. Aggarwal, M. M. Rinella, G. Aglieri and Agnello, M. Agrawal, N. Ahammed, Z. Ahn, S. U. Aiola, S. and Akindinov, A. Alam, S. N. Aleksandrov, D. Alessandro, B. and Alexandre, D. Molina, R. Alfaro Alici, A. Alkin, A. and Almaraz, J. R. M. Alme, J. Alt, T. Altinpinar, S. and Altsybeev, I. Alves Garcia Prado, C. Andrei, C. Andronic, A. and Anguelov, V. Anielski, J. Anticic, T. Antinori, F. and Antonioli, P. Aphecetche, L. Appelshaeuser, H. Arcelli, S. and Arnaldi, R. Arnold, O. W. Arsene, I. C. Arslandok, M. and Audurier, B. Augustinus, A. Averbeck, R. Azmi, M. D. and Badala, A. Baek, Y. W. Bagnasco, S. Bailhache, R. Bala, R. Baldisseri, A. Baral, R. C. Barbano, A. M. Barbera, R. Barile, F. Barnafoldi, G. G. Barnby, L. S. Barret, V. and Bartalini, P. Barth, K. Bartke, J. Bartsch, E. and Basile, M. Bastid, N. Basu, S. Bathen, B. Batigne, G. and Camejo, A. Batista Batyunya, B. Batzing, P. C. Bearden, I. G. Beck, H. Bedda, C. Behera, N. K. Belikov, I. and Bellini, F. Bello Martinez, H. Bellwied, R. Belmont, R. and Belmont-Moreno, E. Belyaev, V. Bencedi, G. Beole, S. and Berceanu, I. Bercuci, A. Berdnikov, Y. Berenyi, D. and Bertens, R. A. Berzano, D. Betev, L. Bhasin, A. Bhat, I. R. Bhati, A. K. Bhattacharjee, B. Bhom, J. Bianchi, L. and Bianchi, N. Bianchin, C. Bielcik, J. Bielcikova, J. and Bilandzic, A. Biswas, R. Biswas, S. Bjelogrlic, S. and Blair, J. T. Blau, D. Blume, C. Bock, F. Bogdanov, A. and Boggild, H. Boldizsar, L. Bombara, M. Book, J. and Borel, H. Borissov, A. Borri, M. Bossu, F. Botta, E. and Boettger, S. Bourjau, C. Braun-Munzinger, P. Bregant, M. and Breitner, T. Broker, T. A. Browning, T. A. Broz, M. and Brucken, E. J. Bruna, E. Bruno, G. E. Budnikov, D. and Buesching, H. Bufalino, S. Buncic, P. Busch, O. and Buthelezi, Z. Butt, J. B. Buxton, J. T. Caffarri, D. and Cai, X. Caines, H. Diaz, L. Calero Caliva, A. Villar, E. Calvo Camerini, P. Carena, F. Carena, W. Carnesecchi, F. and Castellanos, J. Castillo Castro, A. J. Casula, E. A. R. and Ceballos Sanchez, C. Cepila, J. Cerello, P. Cerkala, J. and Chang, B. Chapeland, S. Chartier, M. Charvet, J. L. and Chattopadhyay, S. Chattopadhyay, S. Chelnokov, V. Cherney, M. Cheshkov, C. Cheynis, B. Barroso, V. Chibante and Chinellato, D. D. Cho, S. Chochula, P. Choi, K. and Chojnacki, M. Choudhury, S. Christakoglou, P. Christensen, C. H. Christiansen, P. Chujo, T. Chung, S. U. Cicalo, C. and Cifarelli, L. Cindolo, F. Cleymans, J. Colamaria, F. and Colella, D. Collu, A. Colocci, M. Balbastre, G. Conesa and Conesa del Valle, Z. Connors, M. E. Contreras, J. G. and Cormier, T. M. Morales, Y. Corrales Cortes Maldonado, I. and Cortese, P. Cosentino, M. R. Costa, F. Crochet, P. Cruz Albino, R. Cuautle, E. Cunqueiro, L. Dahms, T. Dainese, A. Danu, A. Das, D. Das, I. Das, S. Dash, A. and Dash, S. De, S. De Caro, A. de Cataldo, G. de Conti, C. and de Cuveland, J. De Falco, A. De Gruttola, D. De Marco, N. De Pasquale, S. Deisting, A. Deloff, A. 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M. Siemiarczuk, T. Silvermyr, D. Silvestre, C. and Simatovic, G. Simonetti, G. Singaraju, R. Singh, R. and Singha, S. Singhal, V. Sinha, B. C. Sinha, T. Sitar, B. and Sitta, M. Skaali, T. B. Slupecki, M. Smirnov, N. and Snellings, R. J. M. Snellman, T. W. Sogaard, C. Song, J. and Song, M. Song, Z. Soramel, F. Sorensen, S. Sozzi, F. and Spacek, M. Spiriti, E. Sputowska, I. Spyropoulou-Stassinaki, M. Stachel, J. Stan, I. Stefanek, G. Stenlund, E. and Steyn, G. Stiller, J. H. Stocco, D. Strmen, P. Suaide, A. A. P. Sugitate, T. Suire, C. Suleymanov, M. Suljic, M. Sultanov, R. Sumbera, M. Szabo, A. Szanto de Toledo, A. Szarka, I. Szczepankiewicz, A. Szymanski, M. and Tabassam, U. Takahashi, J. Tambave, G. J. Tanaka, N. and Tangaro, M. A. Tarhini, M. Tariq, M. Tarzila, M. G. and Tauro, A. Munoz, G. Tejeda Telesca, A. Terasaki, K. and Terrevoli, C. Teyssier, B. Thader, J. Thomas, D. and Tieulent, R. Timmins, A. R. Toia, A. Trogolo, S. and Trombetta, G. Trubnikov, V. Trzaska, W. H. 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Wilkinson, J. Williams, M. C. S. and Windelband, B. Winn, M. Yaldo, C. G. Yang, H. Yang, P. and Yano, S. Yasar, C. Yin, Z. Yokoyama, H. Yoo, I. -K. and Yoon, J. H. Yurchenko, V. Yushmanov, I. Zaborowska, A. and Zaccolo, V. Zaman, A. Zampolli, C. Zanoli, H. J. C. and Zaporozhets, S. Zardoshti, N. Zarochentsev, A. Zavada, P. and Zaviyalov, N. Zbroszczyk, H. Zgura, I. S. Zhalov, M. and Zhang, H. Zhang, X. Zhang, Y. Zhang, C. Zhang, Z. and Zhao, C. Zhigareva, N. Zhou, D. Zhou, Y. Zhou, Z. and Zhu, H. Zhu, J. Zichichi, A. Zimmermann, A. Zimmermann, M. B. Zinovjev, G. Zyzak, M. ALICE Collaboration
Subjects: Nuclear Theory, High Energy Physics::Experiment, Nuclear Experiment
Abstract: We report on the first measurement of an excess in the yield of J/psi at very low transverse momentum (pT < 0.3 GeV/c) in peripheral hadronic Pb-Pb collisions at root s(NN) = 2.76 TeV, performed by ALICE at the CERN LHC. Remarkably, the measured nuclear modification factor of J/psi in the rapidity range 2.5 < y < 4 reaches about 7 (2) in the p(T) range 0-0.3 GeV/c in the 70%-90% (50%-70%) centrality class. The J/psi production cross section associated with the observed excess is obtained under the hypothesis that coherent photoproduction of J/psi is the underlying physics mechanism. If confirmed, the observation of J/psi coherent photoproduction in Pb-Pb collisions at impact parameters smaller than twice the nuclear radius opens new theoretical and experimental challenges and opportunities. In particular, coherent photoproduction accompanying hadronic collisions may provide insight into the dynamics of photoproduction and nuclear reactions, as well as become a novel probe of the quark-gluon plasma.
Published: 2016

41. Anisotropic Flow of Charged Particles in Pb-Pb Collisions at root S-NN=5.02 TeV

Author: Adam, J. Adamova, D. Aggarwal, M. M. Rinella, G. Aglieri and Agnello, M. Agrawal, N. Ahammed, Z. Ahmad, S. Ahn, S. U. and Aiola, S. Akindinov, A. Alam, S. N. Albuquerque, D. S. D. Aleksandrov, D. Alessandro, B. Alexandre, D. Alfaro Molina, R. Alici, A. Alkin, A. Almaraz, J. R. M. Alme, J. Alt, T. Altinpinar, S. Altsybeev, I. Alves Garcia Prado, C. Andrei, C. Andronic, A. Anguelov, V. Anticic, T. Antinori, F. Antonioli, P. Aphecetche, L. and Appelshaeuser, H. Arcelli, S. Arnaldi, R. Arnold, O. W. and Arsene, I. C. Arslandok, M. Audurier, B. Augustinus, A. and Averbeck, R. Azmi, M. D. Badala, A. Baek, Y. W. and Bagnasco, S. Bailhache, R. Bala, R. Balasubramanian, S. and Baldisseri, A. Baral, R. C. Barbano, A. M. Barbera, R. and Barile, F. Barnafoeldi, G. G. Barnby, L. S. Barret, V. and Bartalini, P. Barth, K. Bartke, J. Bartsch, E. Basile, M. Bastid, N. Basu, S. Bathen, B. Batigne, G. and Camejo, A. Batista Batyunya, B. Batzing, P. C. Bearden, I. G. Beck, H. Bedda, C. Behera, N. K. Belikov, I. and Bellini, F. Bello Martinez, H. Bellwied, R. Belmont, R. and Belmont-Moreno, E. Belyaev, V. Benacek, P. Bencedi, G. and Beole, S. Berceanu, I. Bercuci, A. Berdnikov, Y. and Berenyi, D. Bertens, R. A. Berzano, D. Betev, L. Bhasin, A. Bhat, I. R. Bhati, A. K. Bhattacharjee, B. Bhom, J. and Bianchi, L. Bianchi, N. Bianchin, C. Bielcik, J. and Bielcikova, J. Bilandzic, A. Biro, G. Biswas, R. Biswas, S. Bjelogrlic, S. Blair, J. T. Blau, D. Blume, C. and Bock, F. Bogdanov, A. Boggild, H. Boldizsar, L. Bombara, M. Book, J. Borel, H. Borissov, A. Borri, M. Bossu, F. Botta, E. Bourjau, C. Braun-Munzinger, P. Bregant, M. and Breitner, T. Broker, T. A. Browning, T. A. Broz, M. and Brucken, E. J. Bruna, E. Bruno, G. E. Budnikov, D. and Buesching, H. Bufalino, S. Buncic, P. Busch, O. and Buthelezi, Z. Butt, J. B. Buxton, J. T. Cabala, J. and Caffarri, D. Cai, X. Caines, H. Diaz, L. Calero Caliva, A. Calvo Villar, E. Camerini, P. Carena, F. Carena, W. and Carnesecchi, F. Castellanos, J. Castillo Castro, A. J. and Casula, E. A. R. Ceballos Sanchez, C. Cepila, J. Cerello, P. and Cerkala, J. Chang, B. Chapeland, S. Chartier, M. and Charvet, J. L. Chattopadhyay, S. Chattopadhyay, S. Chauvin, A. Chelnokov, V. Cherney, M. Cheshkov, C. Cheynis, B. and Barroso, V. Chibante Chinellato, D. D. Cho, S. Chochula, P. Choi, K. Chojnacki, M. Choudhury, S. Christakoglou, P. Christensen, C. H. Christiansen, P. Chujo, T. Chung, S. U. Cicalo, C. Cifarelli, I, L. Cindolo, F. Cleymans, J. Colamaria, F. Colella, D. Collu, A. Colocci, M. and Balbastre, G. Conesa del Valle, Z. Conesa Connors, M. E. and Contreras, J. G. Cormier, T. M. Morales, Y. Corrales Cortes Maldonado, I. Cortese, P. Cosentino, M. R. Costa, F. and Crochet, P. Cruz Albino, R. Cuautle, E. Cunqueiro, L. and Dahms, T. Dainese, A. Danisch, M. C. Danu, A. Das, D. and Das, I. Das, S. Dash, A. Dash, S. De, S. De Caro, A. de Cataldo, G. de Conti, C. de Cuveland, J. De Falco, A. De Gruttola, D. De Marco, N. De Pasquale, S. and Deisting, A. Deloff, A. Denes, E. Deplano, C. Dhankher, P. Di Bari, D. Di Mauro, A. Di Nezza, P. Diaz Corchero, M. A. Dietel, T. Dillenseger, P. Divia, R. Djuvsland, O. and Dobrin, A. Domenicis Gimenez, D. Doenigus, B. Dordic, O. and Drozhzhova, T. Dubey, A. K. Dubla, A. Ducroux, L. and Dupieux, P. Ehlers, R. J. Elia, D. Endress, E. Engel, H. and Epple, E. Erazmus, B. Erdemir, I. Erhardt, F. and Espagnon, B. Estienne, M. Esumi, S. Eum, J. Evans, D. and Evdokimov, S. Eyyubova, G. Fabbietti, L. Fabris, D. and Faivre, J. Fantoni, A. Fasel, M. Feldkamp, L. and Feliciello, A. Feofilov, G. Ferencei, J. Fernandez Tellez, A. Ferreiro, E. G. Ferretti, A. Festanti, A. Feuillard, V. J. G. Figiel, J. Figueredo, M. A. S. Filchagin, S. and Finogeev, D. Fionda, F. M. Fiore, E. M. Fleck, M. G. and Floris, M. Foertsch, S. Foka, P. Fokin, S. Fragiacomo, E. Francescon, A. Frankenfeld, U. Fronze, G. G. Fuchs, U. Furget, C. Furs, A. Girard, M. Fusco Gaardhoje, J. J. and Gagliardi, M. Gago, A. M. Gallio, M. Gangadharan, D. R. and Ganoti, P. Gao, C. Garabatos, C. Garcia-Solis, E. and Gargiulo, C. Gasik, P. Gauger, E. F. Germain, M. Gheata, A. Gheata, M. Ghosh, P. Ghosh, S. K. Gianotti, P. and Giubellino, P. Giubilato, P. Gladysz-Dziadus, E. Glaessel, P. Gomez Coral, D. M. Ramirez, A. Gomez Gonzalez, A. S. and Gonzalez, V. Gonzalez-Zamora, P. Gorbunov, S. Goerlich, L. and Gotovac, S. Grabski, V. Grachov, O. A. Graczykowski, L. K. Graham, K. L. Grelli, A. Grigoras, A. Grigoras, C. and Grigoriev, V. Grigoryan, A. Grigoryan, S. Grinyov, B. and Grion, N. Gronefeld, J. M. Grosse-Oetringhaus, J. F. and Grosso, R. Guber, F. Guemane, R. Guerzoni, B. and Gulbrandsen, K. Gunji, T. Gupta, A. Gupta, R. Haake, R. and Haaland, O. Hadjidakis, C. Haiduc, M. Hamagaki, H. and Hamar, G. Hamon, J. C. Harris, J. W. Harton, A. and Hatzifotiadou, D. Hayashi, S. Heckel, S. T. Hellbaer, E. and Helstrup, H. Herghelegiu, A. Herrera Corral, G. Hess, B. A. and Hetland, K. F. Hillemanns, H. 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Lunardon, M. Luparello, C. Lutz, T. H. Maevskaya, A. Mager, M. Mahajan, S. and Mahmood, S. M. Maire, A. Majka, R. D. Malaev, M. and Maldonado Cervantes, I. Malinina, L. Mal'Kevich, D. and Malzacher, P. Mamonov, A. Manko, V. Manso, F. Manzari, V. Marchisone, M. Mares, J. Margagliotti, G. V. and Margotti, A. Margutti, J. Marin, A. Markert, C. and Marquard, M. Martin, N. A. Blanco, J. Martin Martinengo, P. and Martinez, M. I. Garcia, G. Martinez Pedreira, M. Martinez and Mas, A. Masciocchi, S. Masera, M. Masoni, A. and Mastroserio, A. Matyja, A. Mayer, C. Mazer, J. Mazzoni, M. A. Mcdonald, D. Meddi, F. Melikyan, Y. and Menchaca-Rocha, A. Meninno, E. Perez, J. Mercado Meres, M. and Miake, Y. Mieskolainen, M. M. Mikhaylov, K. Milano, L. and Milosevic, J. Mischke, A. Mishra, A. N. Miskowiec, D. and Mitra, J. Mitu, C. M. Mohammadi, N. Mohanty, B. and Molnar, L. Montano Zetina, L. Montes, E. De Godoy, D. A. Moreira Moreno, L. A. P. Moretto, S. Morreale, A. and Morsch, A. Muccifora, V. Mudnic, E. Muehlheim, D. and Muhuri, S. Mukherjee, M. Mulligan, J. D. Munhoz, M. G. and Munzer, R. H. Murakami, H. Murray, S. Musa, L. Musinsky, J. Naik, B. Nair, R. Nandi, B. K. Nania, R. Nappi, E. Naru, M. U. Natal da Luz, H. Nattrass, C. Navarro, S. R. Nayak, K. Nayak, R. Nayak, T. K. Nazarenko, S. and Nedosekin, A. Nellen, L. Ng, F. Nicassio, M. Niculescu, M. Niedziela, J. Nielsen, B. S. Nikolaev, S. Nikulin, S. and Nikulin, V. Noferini, F. Nomokonov, P. Nooren, G. and Noris, J. C. C. Norman, J. Nyanin, A. Nystrand, J. and Oeschler, H. Oh, S. Oh, S. K. Ohlson, A. Okatan, A. and Okubo, T. Olah, L. Oleniacz, J. Oliveira Da Silva, A. C. and Oliver, M. H. Onderwaater, J. Oppedisano, C. Orava, R. and Oravec, M. Ortiz Velasquez, A. Oskarsson, A. Otwinowski, J. and Oyama, K. Ozdemir, M. Pachmayer, Y. Pagano, D. and Pagano, P. Paic, G. Pal, S. K. Pan, J. Pandey, A. K. and Papikyan, V. Pappalardo, G. S. Pareek, P. Park, W. J. and Parmar, S. Passfeld, A. Paticchio, V. Patra, R. N. Paul, B. Pei, H. Peitzmann, T. Da Costa, H. Pereira Peresunko, D. Lara, C. E. Perez Lezama, E. Perez Peskov, V. Pestov, Y. Petracek, V. Petrov, V. Petrovici, M. Petta, C. and Piano, S. Pikna, M. Pillot, P. Pimentel, L. O. D. L. and Pinazza, O. Pinsky, L. Piyarathna, D. B. Ploskon, M. and Planinic, M. Pluta, J. Pochybova, S. Podesta-Lerma, P. L. M. and Poghosyan, M. G. Polichtchouk, B. Poljak, N. Poonsawat, W. Pop, A. Porteboeuf-Houssais, S. Porter, J. Pospisil, J. Prasad, S. K. Preghenella, R. Prino, F. Pruneau, C. A. Pshenichnov, I. Puccio, M. Puddu, G. Pujahari, P. and Punin, V. Putschke, J. Qvigstad, H. Rachevski, A. Raha, S. Rajput, S. Rak, J. Rakotozafindrabe, A. Ramello, L. and Rami, F. Raniwala, R. Raniwala, S. Rasanen, S. S. and Rascanu, B. T. Rathee, D. Read, K. F. Redlich, K. Reed, R. J. Rehman, A. Reichelt, P. Reidt, F. Ren, X. and Renfordt, R. Reolon, A. R. Reshetin, A. Reygers, K. and Riabov, V. Ricci, R. A. Richert, T. Richter, M. Riedler, P. Riegler, W. Riggi, F. Ristea, C. Rocco, E. and Rodriguez Cahuantzi, M. Manso, A. Rodriguez Roed, K. and Rogochaya, E. Rohr, D. Rohrich, D. Ronchetti, F. and Ronflette, L. Rosnet, P. Rossi, A. Roukoutakis, F. Roy, A. Roy, C. Roy, P. Rubio Montero, A. J. Rui, R. and Russo, R. Ryabinkin, E. Ryabov, Y. Ryhicki, A. Saarinen, S. Sadhu, S. Sadovsky, S. Safarik, K. Sahlmuller, B. and Sahoo, P. Sahoo, R. Sahoo, S. Sahu, P. K. Saini, J. and Sakai, S. Saleh, M. A. Salzwedel, J. Sambyal, S. and Samsonov, V. Sandor, L. Sandoval, A. Sano, M. Sarkar, D. and Sarkar, N. Sarrna, P. Scapparone, E. Scarlassara, F. and Schiaua, C. Schicker, R. Schmidt, C. Schmidt, H. R. and Schuchmann, S. Schukraft, J. Schulc, M. Schutz, Y. and Schwarz, K. Schweda, K. Scioli, G. Scomparin, E. Scott, R. Sefcik, M. Seger, J. E. Sekiguchi, Y. Sekihata, D. and Selyuzhenkov, I. Senosi, K. Senyukov, S. Serradilla, E. and Sevcenco, A. Shabanov, A. Shabetai, A. Shadura, O. and Shahoyan, R. Shahzad, M. I. Shangaraev, A. Sharma, A. and Sharma, M. Sharma, M. Sharma, N. Sheikh, A. I. Shigaki, K. Shou, Q. Shtejer, K. Sibiriak, Y. Siddhanta, S. and Sielewicz, K. M. Siemiarczuk, T. Silvemyr, D. Silvestre, C. and Simatovic, G. Simonetti, G. Singaraju, R. Singh, R. and Singha, S. Singhal, V. Sinha, B. C. Sinha, T. Sitar, B. and Sitta, M. Skaali, T. B. Slupecki, M. Smirnov, N. and Snellings, R. J. M. Snellman, T. W. Song, J. Song, M. and Song, Z. Soramel, F. Sorensen, S. de Souza, R. D. Sozzi, F. Spacek, M. Spiriti, E. Sputowska, I. and Spyropoulou-Stassinaki, M. Stachel, J. Stan, I. Stankus, P. and Stenlund, E. Steyn, G. Stiller, J. H. Stocco, D. and Strmen, P. Suaide, A. A. P. Sugitate, T. Suire, C. and Suleymanov, M. Suljic, M. Sultanov, R. Sumbera, M. and Sumowidagdo, S. Szabo, A. Szanto de Toledo, A. Szarka, I. and Szczepankiewicz, A. Szymanski, M. Tabassam, U. and Takahashi, J. Tambave, G. J. Tanaka, N. Tarhini, M. and Tariq, M. Tarzila, M. G. Tauro, A. Tejeda Munoz, G. and Telesca, A. Terasaki, K. Terrevoli, C. Teyssier, B. and Thaeder, J. Thakur, D. Thomas, D. Tieulent, R. Timmins, A. R. Toia, A. Trogolo, S. Trombetta, G. Trubnikov, V. and Trzaska, W. H. Tsuji, T. Tumkin, A. Turrisi, R. and Tveter, T. S. Ullaland, K. Uras, A. Usai, G. L. and Utrobicic, A. Vala, M. Palomo, L. Valencia Vallero, S. and Van der Maarel, J. Van Hoorne, J. W. van Leeuwen, M. Vanat, T. Vande Vyyre, P. Varga, D. Vargas, A. Vargyas, M. and Varma, R. Vasileiou, M. Vasiliev, A. Vauthier, A. and Vechernin, V. Veen, A. M. Veldhoen, M. Velure, A. and Vercellin, E. Vergara Limon, S. Vernet, R. Verweij, M. and Vickovic, L. Viesti, G. Viinikainen, J. Vilakazi, Z. and Baillie, O. Villalobos Tello, A. Villatoro Vinogradov, A. and Vinogradov, L. Vinogradov, Y. Virgili, T. Vislavicius, V. and Viyogi, Y. P. Vodopyanov, A. Voelkl, M. A. Voloshin, K. and Voloshin, S. A. Volpe, G. von Haller, B. Vorobyev, I. and Vranic, D. Vrlakova, J. Vulpescu, B. Wagner, B. and Wagner, J. Wang, H. Wang, M. Watanabe, D. Watanabe, Y. and Weber, M. Weber, S. G. Weiser, D. F. Wessels, J. P. and Westerhoff, U. Whitehead, A. M. Wiechula, J. Wikne, J. and Wilk, G. Wilkinson, J. Williams, M. C. S. Windelband, B. and Winn, M. Yang, H. Yang, P. Yano, S. Yasin, Z. Yin, Z. Yokoyama, H. Yoo, I-K Yoon, J. H. Yurchenko, V. and Yushmanov, I. Zaborowska, A. Zaccolo, V. Zaman, A. and Zampolli, C. Zanoli, H. J. C. Zaporozhets, S. Zardoshti, N. and Zarochentsev Zavada, P. Zaviyalov, N. Zbroszczyk, H. and Zgura, I. S. Zhalov, M. Zhang, H. Zhang, X. Zhang, Y. and Zhang, C. Zhang, Z. Zhao, C. Zhigareva, N. Zhou, D. and Zhou, Y. Zhou, Z. Zhu, H. Zhu, J. Zichichi, A. and Zimmemiann, A. Zimmemiann, M. B. Zinovjev, G. Zyzak, M. and ALICE Collaboration
Subjects: High Energy Physics::Experiment, Nuclear Experiment
Abstract: We report the first results of elliptic (v2), triangular (v3), and quadrangular (v4) flow of charged particles in Pb-Pb collisions at a center-of-mass energy per nucleon pair of root s(NN) = 5.02 TeV with the ALICE detector at the CERN Large Hadron Collider. The measurements are performed in the central pseudorapidity region vertical bar n vertical bar < 0.8 and for the transverse momentum range 0.2 < p(T) < 5 GeV/c. The anisotropic flow is measured using two-particle correlations with a pseudorapidity gap greater than one unit and with the multiparticle cumulant method. Compared to results from Pb-Pb collisions at root s(NN) = 2.76 TeV, the anisotropic flow coefficients v2, v3, and v4 are found to increase by (3.0 +/- 0.6)%, (4.3 +/- 1.4)%, and (10.2 +/- 3.8)%, respectively, in the centrality range 0%-50%. This increase can be attributed mostly to an increase of the average transverse momentum between the two energies. The measurements are found to be compatible with hydrodynamic model calculations. This comparison provides a unique opportunity to test the validity of the hydrodynamic picture and the power to further discriminate between various possibilities for the temperature dependence of shear viscosity to entropy density ratio of the produced matter in heavy-ion collisions at the highest energies.
Published: 2016

42. Phylogeny and Temporal Diversification of Darters (Percidae: Etheostomatinae)

Author: Gideon S. Bradburd, Richard C. Harrington, David A. Etnier, Benjamin P. Keck, Christen M. Bossu, Phillip R. Hollingsworth, Thomas J. Near, and Rose L. Carlson
Subjects: Ribosomal Proteins, Genes, RAG-1, Lineage (evolution), Molecular Sequence Data, Zoology, Ammocrypta, PhyloCode, DNA, Mitochondrial, Evolution, Molecular, Nothonotus, Genetics, Animals, Clade, Phylogeny, Ecology, Evolution, Behavior and Systematics, Cell Nucleus, biology, Phylogenetic tree, Percina, Bayes Theorem, Exons, Sequence Analysis, DNA, Cytochrome b Group, biology.organism_classification, Introns, Perciformes, Etheostoma, Haplotypes, Perches, Hybridization, Genetic
Abstract: Discussions aimed at resolution of the Tree of Life are most often focused on the interrelationships of major organismal lineages. In this study, we focus on the resolution of some of the most apical branches in the Tree of Life through exploration of the phylogenetic relationships of darters, a species-rich clade of North American freshwater fishes. With a near-complete taxon sampling of close to 250 species, we aim to investigate strategies for efficient multilocus data sampling and the estimation of divergence times using relaxed-clock methods when a clade lacks a fossil record. Our phylogenetic data set comprises a single mitochondrial DNA (mtDNA) gene and two nuclear genes sampled from 245 of the 248 darter species. This dense sampling allows us to determine if a modest amount of nuclear DNA sequence data can resolve relationships among closely related animal species. Darters lack a fossil record to provide age calibration priors in relaxed-clock analyses. Therefore, we use a near-complete species-sampled phylogeny of the perciform clade Centrarchidae, which has a rich fossil record, to assess two distinct strategies of external calibration in relaxed-clock divergence time estimates of darters: using ages inferred from the fossil record and molecular evolutionary rate estimates. Comparison of Bayesian phylogenies inferred from mtDNA and nuclear genes reveals that heterospecific mtDNA is present in approximately 12.5% of all darter species. We identify three patterns of mtDNA introgression in darters: proximal mtDNA transfer, which involves the transfer of mtDNA among extant and sympatric darter species, indeterminate introgression, which involves the transfer of mtDNA from a lineage that cannot be confidently identified because the introgressed haplotypes are not clearly referable to mtDNA haplotypes in any recognized species, and deep introgression, which is characterized by species diversification within a recipient clade subsequent to the transfer of heterospecific mtDNA. The results of our analyses indicate that DNA sequences sampled from single-copy nuclear genes can provide appreciable phylogenetic resolution for closely related animal species. A well-resolved near-complete species-sampled phylogeny of darters was estimated with Bayesian methods using a concatenated mtDNA and nuclear gene data set with all identified heterospecific mtDNA haplotypes treated as missing data. The relaxed-clock analyses resulted in very similar posterior age estimates across the three sampled genes and methods of calibration and therefore offer a viable strategy for estimating divergence times for clades that lack a fossil record. In addition, an informative rank-free clade-based classification of darters that preserves the rich history of nomenclature in the group and provides formal taxonomic communication of darter clades was constructed using the mtDNA and nuclear gene phylogeny. On the whole, the appeal of mtDNA for phylogeny inference among closely related animal species is diminished by the observations of extensive mtDNA introgression and by finding appreciable phylogenetic signal in a modest sampling of nuclear genes in our phylogenetic analyses of darters.
Published: 2011

43. Inclusive, prompt and non-prompt J/psi production at mid-rapidity in Pb-Pb collisions at root S-NN=2.76 TeV

Author: Adam, J. Adamova, D. Aggarwal, M. M. Rinella, G. Aglieri and Agnello, M. Agrawal, N. Ahammed, Z. Ahn, S. U. Aimo, I. and Aiola, S. Ajaz, M. Akindinov, A. Alam, S. N. and Aleksandrov, D. Alessandro, B. Alexandre, D. Alfaro Molina, R. Alici, A. Alkin, A. Alme, J. Alt, T. Altinpinar, S. Altsybeev, I. Alves Garcia Prado, C. Andrei, C. and Andronic, A. Anguelov, V. Anielski, J. Anticic, T. and Antinori, F. Antonioli, P. Aphecetche, L. Appelshaeuser, H. and Arcelli, S. Armesto, N. Arnaldi, R. Arsene, I. C. and Arslandok, M. Audurier, B. Augustinus, A. Averbeck, R. and Azmi, M. D. Bach, M. Badala, A. Baek, Y. W. Bagnasco, S. and Bailhache, R. Bala, R. Baldisseri, A. Pedrosa, F. Baltasar Dos Santos Baral, R. C. Barbano, A. M. Barbera, R. and Barile, F. Barnafoeldi, G. G. Barnby, L. S. Barret, V. and Bartalini, P. Barth, K. Bartke, J. Bartsch, E. and Basile, M. Bastid, N. Basu, S. Bathen, B. Batigne, G. and Camejo, A. Batista Batyunya, B. Batzing, P. C. Bearden, I. G. Beck, H. Bedda, C. Behera, N. K. Belikov, I. and Bellini, F. Bello Martinez, H. Bellwied, R. Belmont, R. and Belmont-Moreno, E. Belyaev, V. Bencedi, G. Beole, S. and Berceanu, I. Bercuci, A. Berdnikov, Y. Berenyi, D. and Bertens, R. A. Berzano, D. Betev, L. Bhasin, A. Bhat, I. R. Bhati, A. K. Bhattacharjee, B. Bhom, J. Bianchi, L. and Bianchi, N. Bianchin, C. Bielcik, J. Bielcikova, J. and Bilandzic, A. Biswas, R. Biswas, S. Bjelogrlic, S. and Blanco, F. Blau, D. Blume, C. Bock, F. Bogdanov, A. and Boggild, H. Boldizsar, L. Bombara, M. Book, J. Borel, H. and Borissov, A. Borri, M. Bossu, F. Botje, M. Botta, E. and Boettger, S. Braun-Munzinger, P. Bregant, M. Breitner, T. Broker, T. A. Browning, T. A. Broz, M. Brucken, E. J. and Bruna, E. Bruno, G. E. Budnikov, D. Buesching, H. and Bufalino, S. Buncic, P. Busch, O. Buthelezi, Z. Buxton, J. T. Caffarri, D. Cai, X. Caines, H. Diaz, L. Calero and Caliva, A. Calvo Villar, E. Camerini, P. Carena, F. and Carena, W. Castellanos, J. Castillo Castro, A. J. Casula, E. A. R. Cavicchioli, C. Ceballos Sanchez, C. Cepila, J. and Cerello, P. Cerkala, J. Chang, B. Chapeland, S. and Chartier, M. Charvet, J. L. Chattopadhyay, S. Chattopadhyay, S. Chelnokov, V. Cherney, M. Cheshkov, C. Cheynis, B. and Barroso, V. Chibante Chinellato, D. D. Chochula, P. and Choi, K. Chojnacki, M. Choudhury, S. Christakoglou, P. and Christensen, C. H. Christiansen, P. Chujo, T. Chung, S. U. and Chunhui, Z. Cicalo, C. Cifarelli, L. Cindolo, F. and Cleymans, J. Colamaria, F. Colella, D. Collu, A. and Colocci, M. Balbastre, G. Conesa del Valle, Z. Conesa and Connors, M. E. Contreras, J. G. Cormier, T. M. Morales, Y. Corrales Cortes Maldonado, I. Cortese, P. Cosentino, M. R. and Costa, F. Crochet, P. Cruz Albino, R. Cuautle, E. and Cunqueiro, L. Dahms, T. Dainese, A. Danu, A. Das, D. and Das, I. Das, S. Dash, A. Dash, S. De, S. De Caro, A. and de Cataldo, G. de Cuveland, J. De Falco, A. De Gruttola, D. De Marco, N. De Pasquale, S. Deisting, A. 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Wilkinson, J. Williams, M. C. S. and Windelband, B. Winn, M. Yaldo, C. G. Yang, H. Yang, P. and Yano, S. Yin, Z. Yokoyama, H. Yoo, I. -K. Yurchenko, V. Yushmanov, I. Zaborowska, A. Zaccolo, V. Zaman, A. and Zampolli, C. Zanoli, H. J. C. Zaporozhets, S. Zardoshti, N. Zarochentsev, A. Zavada, P. Zaviyalov, N. Zbroszczyk, H. Zgura, I. S. Zhalov, M. Zhang, H. Zhang, X. and Zhang, Y. Zhao, C. Zhigareva, N. Zhou, D. Zhou, Y. and Zhou, Z. Zhu, H. Zhu, J. Zhu, X. Zichichi, A. and Zimmermann, A. Zimmermann, M. B. Zinovjev, G. Zyzak, M. and ALICE Collaboration
Subjects: High Energy Physics::Experiment, Nuclear Experiment
Abstract: The transverse momentum (p(T)) dependence of the nuclear modification factor R-AA and the centrality dependence of the average transverse momentum for inclusive J/psi have been measured with ALICE for Pb-Pb collisions at root S-NN = 2.76TeV in the e(+)e(-) decay channel at mid-rapidity (vertical bar y vertical bar < 0.8). The is significantly smaller than the one observed for pp collisions at the same centre-of-mass energy. Consistently, an increase of RAA is observed towards low p(T). These observations might be indicative of a sizable contribution of charm quark coalescence to the J/psi production. Additionally, the fraction of non-prompt J/psi from beauty hadron decays, f(B), has been determined in the region 1.5 < p(T) < 10 GeV/c in three centrality intervals. No significant centrality dependence of fB is observed. Finally, the RAA of non-prompt J/psi is discussed and compared with model predictions. The nuclear modification in the region 4.5 < p(T) < 10 GeV/c is found to be stronger than predicted by most models.
Published: 2015

44. Measurement of jet quenching with semi-inclusive hadron-jet distributions in central Pb-Pb collisions at root s(NN)=2.76 TeV

Author: Adam, J. Adamova, D. Aggarwal, M. M. Rinella, G. Aglieri and Agnello, M. Agrawal, N. Ahammed, Z. Ahn, S. U. Aimo, I. and Aiola, S. Ajaz, M. Akindinov, A. Alam, S. N. and Aleksandrov, D. Alessandro, B. Alexandre, D. Alfaro Molina, R. Alici, A. Alkin, A. Almaraz, J. R. M. Alme, J. and Alt, T. Altinpinar, S. Altsybeev, I. Garcia Prado, C. Alves and Andrei, C. Andronic, A. Anguelov, V. Anielski, J. and Anticic, T. Antinori, F. Antonioli, P. Aphecetche, L. and Appelshaeuser, H. Arcelli, S. Armesto, N. Arnaldi, R. and Arsene, I. C. Arslandok, M. Audurier, B. Augustinus, A. and Averbeck, R. Azmi, M. D. Bach, M. Badala, A. Baek, Y. W. and Bagnasco, S. Bailhache, R. Bala, R. Baldisseri, A. and Pedrosa, F. Baltasar Dos Santos Baral, R. C. Barbano, A. M. and Barbera, R. Barile, F. Barnafoeldi, G. G. Barnby, L. S. and Barret, V. Bartalini, P. Barth, K. Bartke, J. Bartsch, E. Basile, M. Bastid, N. Basu, S. Bathen, B. and Batigne, G. Camejo, A. Batista Batyunya, B. Batzing, P. C. and Bearden, I. G. Beck, H. Bedda, C. Behera, N. K. and Belikov, I. Bellini, F. Bello Martinez, H. Bellwied, R. and Belmont, R. Belmont-Moreno, E. Belyaev, V. Bencedi, G. and Beole, S. Berceanu, I. Bercuci, A. Berdnikov, Y. and Berenyi, D. Bertens, R. A. Berzano, D. Betev, L. Bhasin, A. Bhat, I. R. Bhati, A. K. Bhattacharjee, B. Bhom, J. and Bianchi, L. Bianchi, N. Bianchin, C. Bielcik, J. and Bielcikova, J. Bilandzic, A. Biswas, R. Biswas, S. and Bjelogrlic, S. Blanco, F. Blau, D. Blume, C. Bock, F. and Bogdanov, A. Boggild, H. Boldizsar, L. Bombara, M. and Book, J. Borel, H. Borissov, A. Borri, M. Bossu, F. and Botta, E. Boettger, S. Braun-Munzinger, P. Bregant, M. and Breitner, T. Broker, T. A. Browning, T. A. Broz, M. and Brucken, E. J. Bruna, E. Bruno, G. E. Budnikov, D. and Buesching, H. Bufalino, S. Buncic, P. Busch, O. and Buthelezi, Z. Butt, J. B. Buxton, J. T. Caffarri, D. and Cai, X. Caines, H. Diaz, L. Calero Caliva, A. Calvo Villar, E. Camerini, P. Carena, F. Carena, W. and Castellanos, J. Castillo Castro, A. J. Casula, E. A. R. and Cavicchioli, C. Ceballos Sanchez, C. Cepila, J. Cerello, P. and Cerkala, J. Chang, B. Chapeland, S. Chartier, M. and Charvet, J. L. Chattopadhyay, S. Chattopadhyay, S. and Chelnokov, V. Cherney, M. Cheshkov, C. Cheynis, B. and Barroso, V. Chibante Chinellato, D. D. Chochula, P. Choi, K. and Chojnacki, M. Choudhury, S. Christakoglou, P. and Christensen, C. H. Christiansen, P. Chujo, T. Chung, S. U. and Chunhui, Z. Cicalo, C. Cifarelli, L. Cindolo, F. and Cleymans, J. Colamaria, F. Colella, D. Collu, A. and Colocci, M. Balbastre, G. Conesa del Valle, Z. Conesa and Connors, M. E. Contreras, J. G. Cormier, T. M. Morales, Y. Corrales Cortes Maldonado, I. Cortese, P. Cosentino, M. R. and Costa, F. Crochet, P. Cruz Albino, R. Cuautle, E. and Cunqueiro, L. Dahms, T. Dainese, A. Danu, A. Das, D. and Das, I. Das, S. Dash, A. Dash, S. De, S. De Caro, A. and de Cataldo, G. de Cuveland, J. De Falco, A. De Gruttola, D. 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P. Westerhoff, U. Wiechula, J. Wikne, J. and Wilde, M. Wilk, G. Wilkinson, J. Williams, M. C. S. and Windelband, B. Winn, M. Yaldo, C. G. Yang, H. Yang, P. and Yano, S. Yin, Z. Yokoyama, H. Yoo, I. -K. Yurchenko, V. Yushmanov, I. Zaborowska, A. Zaccolo, V. Zaman, A. and Zampolli, C. Zanoli, H. J. C. Zaporozhets, S. Zardoshti, N. Zarochentsev, A. Zavada, P. Zaviyalov, N. Zbroszczyk, H. Zgura, I. S. Zhalov, M. Zhang, H. Zhang, X. and Zhang, Y. Zhao, C. Zhigareva, N. Zhou, D. Zhou, Y. and Zhou, Z. Zhu, H. Zhu, J. Zhu, X. Zichichi, A. and Zimmermann, A. Zimmermann, M. B. Zinovjev, G. Zyzak, M. and ALICE Collaboration
Subjects: Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Experiment, Nuclear Experiment
Abstract: We report the measurement of a new observable of jet quenching in central Pb-Pb collisions at root s(NN) = 2.76 TeV, based on the semi-inclusive rate of charged jets recoiling from a high transverse momentum (high-p T) charged hadron trigger. Jets are measured using collinear-safe jet reconstruction with infrared cutoff for jet constituents of 0.15 GeV, for jet resolution parameters R = 0.2, 0.4 and 0.5. Underlying event background is corrected at the event-ensemble level, without imposing bias on the jet population. Recoil jet spectra are reported in the range 20 < p(T,jet)(ch) < 100 GeV. Reference distributions for pp collisions at root s = 2.76TeV are calculated using Monte Carlo and NLO pQCD methods, which are validated by comparing with measurements in pp collisions at root s = 7TeV. The recoil jet yield in central Pb-Pb collisions is found to be suppressed relative to that in pp collisions. No significant medium-induced broadening of the intra-jet energy profile is observed within 0.5 radians relative to the recoil jet axis. The angular distribution of the recoil jet yield relative to the trigger axis is found to be similar in central Pb-Pb and pp collisions, with no significant medium-induced acoplanarity observed. Large-angle jet deflection, which may provide a direct probe of the nature of the quasi-particles in hot QCD matter, is explored.
Published: 2015

45. Measurement of charm and beauty production at central rapidity versus charged-particle multiplicity in proton-proton collisions at root s=7 TeV

Author: Adam, J. Adamova, D. Aggarwal, M. M. Rinella, G. Aglieri and Agnello, M. Agrawal, N. Ahammed, Z. Ahmed, I. Ahn, S. U. and Aimo, I. Aiola, S. Ajaz, M. Akindinov, A. Alam, S. N. Aleksandrov, D. Alessandro, B. Alexandre, D. Alfaro Molina, R. Alici, A. Alkin, A. Alme, J. Alt, T. and Altinpinar, S. Altsybeev, I. Alves Garcia Prado, C. Andrei, C. Andronic, A. Anguelov, V. Anielski, J. Anticic, T. and Antinori, F. Antonioli, P. Aphecetche, L. Appelshaeuser, H. Arcelli, S. Armesto, N. Arnaldi, R. Aronsson, T. and Arsene, I. C. Arslandok, M. Augustinus, A. Averbeck, R. and Azmi, M. D. Bach, M. Badala, A. Baek, Y. W. Bagnasco, S. and Bailhache, R. Bala, R. Baldisseri, A. Ball, M. and Pedrosa, F. Baltasar Dos Santos Baral, R. C. Barbano, A. M. and Barbera, R. Barile, F. Barnafoeldi, G. G. Barnby, L. S. and Barret, V. Bartalini, P. Bartke, J. Bartsch, E. Basile, M. Bastid, N. Basu, S. Bathen, B. Batigne, G. and Camejo, A. Batista Batyunya, B. Batzing, P. C. Bearden, I. G. Beck, H. Bedda, C. Behera, N. K. Belikov, I. and Bellini, F. Bello Martinez, H. Bellwied, R. Belmont, R. and Belmont-Moreno, E. Belyaev, V. Bencedi, G. Beole, S. and Berceanu, I. Bercuci, A. Berdnikov, Y. Berenyi, D. and Bertens, R. A. Berzano, D. Betev, L. Bhasin, A. Bhat, I. R. Bhati, A. K. Bhattacharjee, B. Bhom, J. Bianchi, L. and Bianchi, N. Bianchin, C. Bielcik, J. Bielcikova, J. and Bilandzic, A. Biswas, S. Bjelogrlic, S. Blanco, F. Blau, D. Blume, C. Bock, F. Bogdanov, A. Boggild, H. and Boldizsar, L. Bombara, M. Book, J. Borel, H. Borissov, A. Borri, M. Bossu, F. Botje, M. Botta, E. Boettger, S. Braun-Munzinger, P. Bregant, M. Breitner, T. Broker, T. A. Browning, T. A. Broz, M. Brucken, E. J. Bruna, E. and Bruno, G. E. Budnikov, D. Buesching, H. Bufalino, S. and Buncic, P. Busch, O. Buthelezi, Z. Buxton, J. T. and Caffarri, D. Cai, X. Caines, H. Diaz, L. Calero Caliva, A. Calvo Villar, E. Camerini, P. Carena, F. Carena, W. and Castellanos, J. Castillo Castro, A. J. Casula, E. A. R. and Cavicchioli, C. Ceballos Sanchez, C. Cepila, J. Cerello, P. and Chang, B. Chapeland, S. Chartier, M. Charvet, J. L. and Chattopadhyay, S. Chattopadhyay, S. Chelnokov, V. Cherney, M. Cheshkov, C. Cheynis, B. Barroso, V. Chibante and Chinellato, D. D. Chochula, P. Choi, K. Chojnacki, M. and Choudhury, S. Christakoglou, P. Christensen, C. H. and Christiansen, P. Chujo, T. Chung, S. U. Cicalo, C. and Cifarelli, L. Cindolo, F. Cleymans, J. Colamaria, F. and Colella, D. Collu, A. Colocci, M. Balbastre, G. Conesa and del Valle, Z. Conesa Connors, M. E. Contreras, J. G. and Cormier, T. M. Morales, Y. Corrales Cortes Maldonado, I. and Cortese, P. Cosentino, M. R. Costa, F. Crochet, P. Cruz Albino, R. Cuautle, E. Cunqueiro, L. Dahms, T. Dainese, A. Danu, A. Das, D. Das, I. Das, S. Dash, A. and Dash, S. De, S. De Caro, A. De Cataldo, G. de Cuveland, J. De Falco, A. De Gruttola, D. De Marco, N. De Pasquale, S. Deloff, A. Denes, E. D'Erasmo, G. Di Bari, D. Di Mauro, A. Di Nezza, P. Diaz Corchero, M. A. and Dietel, T. Dillenseger, P. Divia, R. Djuvsland, O. and Dobrin, A. Dobrowolski, T. Domenicis Gimenez, D. Doenigus, B. Dordic, O. Dubey, A. K. Dubla, A. Ducroux, L. and Dupieux, P. Ehlers, R. J. Elia, D. Engel, H. Erazmus, B. and Eschweiler, D. Espagnon, B. Estienne, M. Esumi, S. and Evans, D. Evdokimov, S. Eyyubova, G. Fabbietti, L. and Fabris, D. Faivre, J. Fantoni, A. Fasel, M. Feldkamp, L. and Felea, D. Feliciello, A. Feofilov, G. Ferencei, J. and Fernandez Tellez, A. Ferreiro, E. G. Ferretti, A. Festanti, A. Figiel, J. Figueredo, M. A. S. Filchagin, S. and Finogeev, D. Fionda, F. M. Fiore, E. M. Fleck, M. G. and Floris, M. Foertsch, S. Foka, P. Fokin, S. Fragiacomo, E. Francescon, A. Frankenfeld, U. Fuchs, U. Furget, C. and Furs, A. Girard, M. Fusco Gaardhoje, J. J. Gagliardi, M. and Gago, A. M. Gallio, M. Gangadharan, D. R. Ganoti, P. and Gao, C. Garabatos, C. Garcia-Solis, E. Gargiulo, C. and Gasik, P. Germain, M. Gheata, A. Gheata, M. Ghosh, P. and Ghosh, S. K. Gianotti, P. Giubellino, P. Giubilato, P. and Gladysz-Dziadus, E. Glaessel, P. Ramirez, A. Gomez and Gonzalez-Zamora, P. Gorbunov, S. Goerlich, L. Gotovac, S. and Grabski, V. Graczykowski, L. K. Grelli, A. Grigoras, A. and Grigoras, C. Grigoriev, V. Grigoryan, A. Grigoryan, S. and Grinyov, B. Grion, N. Grosse-Oetringhaus, J. F. and Grossiord, J. -Y. Grosso, R. Guber, F. Guernane, R. and Guerzoni, B. Gulbrandsen, K. Gulkanyan, H. Gunji, T. and Gupta, A. Gupta, R. Haake, R. Haaland, O. Hadjidakis, C. and Haiduc, M. Hamagaki, H. Hamar, G. Hanratty, L. D. and Hansen, A. Harris, J. W. Hartmann, H. Harton, A. and Hatzifotiadou, D. Hayashi, S. Heckel, S. T. Heide, M. and Helstrup, H. Herghelegiu, A. Herrera Corral, G. Hess, B. A. and Hetland, K. F. Hilden, T. E. Hillemanns, H. Hippolyte, B. Hristov, P. Huang, M. Humanic, T. J. Hussain, N. and Hussain, T. Hutter, D. Hwang, D. S. Ilkaev, R. Ilkiv, I. and Inaba, M. Ionita, C. Ippolitov, M. Irfan, M. Ivanov, M. 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Mal'Kevich, D. and Malzacher, P. Mamonov, A. Manceau, L. Manko, V. Manso, F. Manzari, V. Marchisone, M. Mares, J. Margagliotti, G. V. Margotti, A. Margutti, J. Marin, A. Markert, C. and Marquard, M. Martashvili, I. Martin, N. A. Blanco, J. Martin and Martinengo, P. Martinez, M. I. Garcia, G. Martinez and Pedreira, M. Martinez Martynov, Y. Mas, A. Masciocchi, S. and Masera, M. Masoni, A. Massacrier, L. Mastroserio, A. and Matyja, A. Mayer, C. Mazer, J. Mazzoni, M. A. Mcdonald, D. Meddi, F. Menchaca-Rocha, A. Meninno, E. Perez, J. Mercado Meres, M. Miake, Y. Mieskolainen, M. M. and Mikhaylov, K. Milano, L. Milosevic, J. Minervini, L. M. and Mischke, A. Mishra, A. N. Miskowiec, D. Mitra, J. Mitu, C. M. Mohammadi, N. Mohanty, B. Molnar, L. Montano Zetina, L. Montes, E. Morando, M. Moretto, S. Morreale, A. Morsch, A. Muccifora, V. Mudnic, E. Muehlheim, D. and Muhuri, S. Mukherjee, M. Mueller, H. Mulligan, J. D. and Munhoz, M. G. Murray, S. Musa, L. Musinsky, J. Nandi, B. K. Nania, R. 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Roy, A. Roy, C. and Roy, P. Rubio Montero, A. J. Rui, R. Russo, R. and Ryabinkin, E. Ryabov, Y. Rybicki, A. Sadovsky, S. and Safarik, K. Sahlmuller, B. Sahoo, P. Sahoo, R. Sahoo, S. and Sahu, P. K. Saini, J. Sakai, S. Saleh, M. A. and Salgado, C. A. Salzwedel, J. Sambyal, S. Samsonov, V. and Castro, X. Sanchez Sandor, L. Sandoval, A. Sano, M. and Santagati, G. Sarkar, D. Scapparone, E. Scarlassara, F. and Scharenberg, R. P. Schiaua, C. Schicker, R. Schmidt, C. and Schmidt, H. R. Schuchmann, S. Schukraft, J. Schulc, M. and Schuster, T. Schutz, Y. Schwarz, K. Schweda, K. Scioli, G. Scomparin, E. Scott, R. Seeder, K. S. Seger, J. E. and Sekiguchi, Y. Selyuzhenkov, I. Senosi, K. Seo, J. and Serradilla, E. Sevcenco, A. Shabanov, A. Shabetai, A. and Shadura, O. Shahoyan, R. Shangaraev, A. Sharma, A. and Sharma, M. Sharma, N. Shigaki, K. Shtejer, K. Sibiriak, Y. Siddhanta, S. Sielewicz, K. M. Siemiarczuk, T. and Silvermyr, D. Silvestre, C. Simatovic, G. Simonetti, G. and Singaraju, R. 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Usai, G. L. Utrobicic, A. Vajzer, M. Vala, M. Palomo, L. Valencia and Vallero, S. Van der Maarel, J. Van Hoorne, J. W. van Leeuwen, M. Vanat, T. Vyvre, P. Vande Varga, D. Vargas, A. Vargyas, M. Varma, R. Vasileiou, M. Vasiliev, A. and Vauthier, A. Vechernin, V. Veen, A. M. Veldhoen, M. and Velure, A. Venaruzzo, M. Vercellin, E. Vergara Limon, S. and Vernet, R. Verweij, M. Vickovic, L. Viesti, G. and Viinikainen, J. Vilakazi, Z. Baillie, O. Villalobos and Vinogradov, A. Vinogradov, L. Vinogradov, Y. Virgili, T. and Vislavicius, V. Viyogi, Y. P. Vodopyanov, A. Voelkl, M. A. and Voloshin, K. Voloshin, S. A. Volpe, G. von Haller, B. and Vorobyev, I. Vranic, D. Vrlakova, J. Vulpescu, B. and Vyushin, A. Wagner, B. Wagner, J. Wang, H. Wang, M. and Wang, Y. Watanabe, D. Weber, M. Weber, S. G. Wessels, J. P. Westerhoff, U. Wiechula, J. Wikne, J. Wilde, M. and Wilk, G. Wilkinson, J. Williams, M. C. S. Windelband, B. and Winn, M. Yaldo, C. G. Yamaguchi, Y. Yang, H. Yang, P. and Yano, S. Yasnopolskiy, S. Yin, Z. Yokoyama, H. Yoo, I. -K. Yurchenko, V. Yushmanov, I. Zaborowska, A. and Zaccolo, V. Zaman, A. Zampolli, C. Zanoli, H. J. C. and Zaporozhets, S. Zarochentsev, A. Zavada, P. Zaviyalov, N. and Zbroszczyk, H. Zgura, I. S. Zhalov, M. Zhang, H. and Zhang, X. Zhang, Y. Zhao, C. Zhigareva, N. Zhou, D. and Zhou, Y. Zhou, Z. Zhu, H. Zhu, J. Zhu, X. Zichichi, A. Zimmermann, A. Zimmermann, M. B. Zinovjev, G. Zyzak, M. ALICE Collaboration
Subjects: High Energy Physics::Experiment, Nuclear Experiment
Abstract: Prompt D meson and non-prompt J/psi yields are studied as a function of the multiplicity of charged particles produced in inelastic proton-proton collisions at a centre-of-mass energy of root s = 7 TeV. The results are reported as a ratio between yields in a given multiplicity interval normalised to the multiplicity-integrated ones (relative yields). They are shown as a function of the multiplicity of charged particles normalised to the average value for inelastic collisions (relative charged-particle multiplicity). D-0, D+ and D*+ mesons are measured in five p(T) intervals from 1 GeV/c to 20 GeV/c and for |y| < 0.5 via their hadronic decays. The D-meson relative yield is found to increase with increasing charged-particle multiplicity. For events with multiplicity six times higher than the average multiplicity of inelastic collisions, a yield enhancement of a factor about 15 relative to the multiplicity-integrated yield in inelastic collisions is observed. The yield enhancement is independent of transverse momentum within the uncertainties of the measurement. The D-0-meson relative yield is also measured as a function of the relative multiplicity at forward pseudo-rapidity. The non-prompt J/psi, i.e. the B hadron, contribution to the inclusive J/psi production is measured in the di-electron decay channel at central rapidity. It is evaluated for p(T) > 1.3 GeV/c and |y| < 0.9, and extrapolated to p(T) > 0. The fraction of non-prompt J/psi the inclusive J/psi yields shows no dependence on the charged-particle multiplicity at central rapidity. Charm and beauty hadron relative yields exhibit a similar increase with increasing charged-particle multiplicity. The measurements are compared to PYTHIA 8, EPOS 3 and percolation calculations.
Published: 2015

46. Forward-backward multiplicity correlations in pp collisions at root s=0.9, 2.76 and 7 TeV

Author: Adam, J. Adamova, D. Aggarwal, M. M. Rinella, G. Aglieri and Agnello, M. Agrawal, N. Ahammed, Z. Ahmed, I. Ahn, S. U. and Aimo, I. Aiola, S. Ajaz, M. Akindinov, A. Alam, S. N. Aleksandrov, D. Alessandro, B. Alexandre, D. Alfaro Molina, R. Alici, A. Alkin, A. Alme, J. Alt, T. and Altinpinar, S. Altsybeev, I. Alves Garcia Prado, C. Andrei, C. Andronic, A. Anguelov, V. Anielski, J. Anticic, T. and Antinori, F. Antonioli, P. Aphecetche, L. Appelshaeuser, H. Arcelli, S. Armesto, N. Arnaldi, R. Aronsson, T. and Arsene, I. C. Arslandok, M. Augustinus, A. Averbeck, R. and Azmi, M. D. Bach, M. Badala, A. Baek, Y. W. Bagnasco, S. and Bailhache, R. Bala, R. Baldisseri, A. Ball, M. and Pedrosa, F. Baltasar Dos Santos Baral, R. C. Barbano, A. M. and Barbera, R. Barile, F. Barnafoeldi, G. G. Barnby, L. S. and Barret, V. Bartalini, P. Bartke, J. Bartsch, E. Basile, M. Bastid, N. Basu, S. Bathen, B. Batigne, G. and Camejo, A. Batista Batyunya, B. Batzing, P. C. Bearden, I. G. Beck, H. Bedda, C. Behera, N. K. Belikov, I. and Bellini, F. Martinez, H. Bello Bellwied, R. Belmont, R. and Belmont-Moreno, E. Belyaev, V. Bencedi, G. Beole, S. and Berceanu, I. Bercuci, A. Berdnikov, Y. Berenyi, D. and Bertens, R. A. Berzano, D. Betev, L. Bhasin, A. Bhat, I. R. Bhati, A. K. Bhattacharjee, B. Bhom, J. Bianchi, L. and Bianchi, N. Bianchin, C. Bielcik, J. Bielcikova, J. and Bilandzic, A. Biswas, S. Bjelogrlic, S. Blanco, F. Blau, D. Blume, C. Bock, F. Bogdanov, A. Boggild, H. and Boldizsar, L. Bombara, M. Book, J. Borel, H. Borissov, A. Borri, M. Bossu, F. Botje, M. Botta, E. Boettger, S. Braun-Munzinger, P. Bregant, M. Breitner, T. Broker, T. A. Browning, T. A. Broz, M. Brucken, E. J. Bruna, E. and Bruno, G. E. Budnikov, D. Buesching, H. Bufalino, S. and Buncic, P. Busch, O. Buthelezi, Z. Buxton, J. T. and Caffarri, D. Cai, X. Caines, H. Diaz, L. Calero Caliva, A. Calvo Villar, E. Camerini, P. Carena, F. Carena, W. and Castellanos, J. Castillo Castro, A. J. Casula, E. A. R. and Cavicchioli, C. Ceballos Sanchez, C. Cepila, J. Cerello, P. and Chang, B. Chapeland, S. Chartier, M. Charvet, J. L. and Chattopadhyay, S. Chattopadhyay, S. Chelnokov, V. Cherney, M. Cheshkov, C. Cheynis, B. Barroso, V. Chibante and Chinellato, D. D. Chochula, P. Choi, K. Chojnacki, M. and Choudhury, S. Christakoglou, P. Christensen, C. H. and Christiansen, P. Chujo, T. Chung, S. U. Cicalo, C. and Cifarelli, L. Cindolo, F. Cleymans, J. Colamaria, F. and Colella, D. Collu, A. Colocci, M. Balbastre, G. Conesa and del Valle, Z. Conesa Connors, M. E. Contreras, J. G. and Cormier, T. M. Morales, Y. Corrales Cortes Maldonado, I. and Cortese, P. Cosentino, M. R. Costa, F. Crochet, P. Cruz Albino, R. Cuautle, E. Cunqueiro, L. Dahms, T. Dainese, A. Danu, A. Das, D. Das, I. Das, S. Dash, A. and Dash, S. De, S. De Caro, A. de Cataldo, G. de Cuveland, J. De Falco, A. De Gruttola, D. De Marco, N. De Pasquale, S. Deloff, A. Denes, E. D'Erasmo, G. Di Bari, D. Di Mauro, A. Di Nezza, P. Corchero, M. A. Diaz and Dietel, T. Dillenseger, P. Divia, R. Djuvsland, O. and Dobrin, A. Dobrowolski, T. Domenicis Gimenez, D. Doenigus, B. Dordic, O. Dubey, A. K. Dubla, A. Ducroux, L. and Dupieux, P. Ehlers, R. J. Elia, D. Engel, H. Erazmus, B. and Erdal, H. A. Eschweiler, D. Espagnon, B. Esposito, M. and Estienne, M. Esumi, S. Evans, D. Evdokimov, S. and Eyyubova, G. Fabbietti, L. Fabris, D. Faivre, J. and Fantoni, A. Fasel, M. Feldkamp, L. Felea, D. Feliciello, A. Feofilov, G. Ferencei, J. Fernandez Tellez, A. and Ferreiro, E. G. Ferretti, A. Festanti, A. Figiel, J. and Figueredo, M. A. S. Filchagin, S. Finogeev, D. Fionda, F. M. and Fiore, E. M. Fleck, M. G. Floris, M. Foertsch, S. and Foka, P. Fokin, S. Fragiacomo, E. Francescon, A. and Frankenfeld, U. Fuchs, U. Furget, C. Furs, A. Girard, M. Fusco Gaardhoje, J. J. Gagliardi, M. Gago, A. M. Gallio, M. Gangadharan, D. R. Ganoti, P. Gao, C. Garabatos, C. and Garcia-Solis, E. Gargiulo, C. Gasik, P. Germain, M. and Gheata, A. Gheata, M. Ghidini, B. Ghosh, P. Ghosh, S. K. and Gianotti, P. Giubellino, P. Giubilato, P. and Gladysz-Dziadus, E. Glaessel, P. Ramirez, A. Gomez and Gonzalez-Zamora, P. Gorbunov, S. Goerlich, L. Gotovac, S. and Grabski, V. Graczykowski, L. K. Grelli, A. Grigoras, A. and Grigoras, C. Grigoriev, V. Grigoryan, A. Grigoryan, S. and Grinyov, B. Grion, N. Grosse-Oetringhaus, J. F. and Grossiord, J. -Y. Grosso, R. Guber, F. Guernane, R. and Guerzoni, B. Gulbrandsen, K. Gulkanyan, H. Gunji, T. and Gupta, A. Gupta, R. Haake, R. Haaland, O. Hadjidakis, C. and Haiduc, M. Hamagaki, H. Hamar, G. Hanratty, L. D. and Hansen, A. Harris, J. W. Hartmann, H. Harton, A. and Hatzifotiadou, D. Hayashi, S. Heckel, S. T. Heide, M. and Helstrup, H. Herghelegiu, A. Herrera Corral, G. Hess, B. A. and Hetland, K. F. Hilden, T. E. Hillemanns, H. Hippolyte, B. Hristov, P. Huang, M. Humanic, T. J. Hussain, N. and Hussain, T. Hutter, D. Hwang, D. S. Ilkaev, R. Ilkiv, I. and Inaba, M. Ionita, C. Ippolitov, M. Irfan, M. Ivanov, M. Ivanov, V. Jacholkowski, A. Jacobs, P. M. Jahnke, C. and Jang, H. J. Janik, M. A. Jayarathna, P. H. S. Y. Jena, C. Jena, S. Jimenez Bustamante, R. T. Jones, P. G. Jung, H. Jusko, A. Kalinak, P. Kalweit, A. Kamin, J. Kang, J. H. Kaplin, V. Kar, S. Uysal, A. Karasu Karavichev, O. and Karavicheva, T. Karpechev, E. Kebschull, U. Keidel, R. and Keijdener, D. L. D. Keil, M. Khan, K. H. Khan, M. M. and Khan, P. Khan, S. A. Khanzadeev, A. Kharlov, Y. Kileng, B. Kim, B. Kim, D. W. Kim, D. J. Kim, H. Kim, J. S. and Kim, M. Kim, M. Kim, S. Kim, T. Kirsch, S. and Kisel, I. Kiselev, S. Kisiel, A. Kiss, G. Klay, J. L. and Klein, C. Klein, J. Klein-Boesing, C. Kluge, A. and Knichel, M. L. Knospe, A. G. Kobayashi, T. Kobdaj, C. and Kofarago, M. Koehler, M. K. Kollegger, T. Kolojvari, A. and Kondratiev, V. Kondratyeva, N. Kondratyuk, E. Konevskikh, A. and Kovalenko, V. Kowalski, M. Kox, S. Meethaleveedu, G. Koyithatta Kral, J. Kralik, I. Kravcakova, A. Krelina, M. Kretz, M. Krivda, M. Krizek, F. Kryshen, E. and Krzewicki, M. Kubera, A. M. Kucera, V. Kucheriaev, Y. and Kugathasan, T. Kuhn, C. Kuijer, P. G. Kulakov, I. Kumar, J. Kumar, L. Kurashvili, P. Kurepin, A. Kurepin, A. B. and Kuryakin, A. Kushpil, S. Kweon, M. J. Kwon, Y. La Pointe, S. L. La Rocca, P. Lagana Fernandes, C. Lakomov, I. and Langoy, R. Lara, C. Lardeux, A. Lattuca, A. Laudi, E. Lea, R. Leardini, L. Lee, G. R. Legrand, I. and Lehnert, J. Lemmon, R. C. Lenti, V. Leogrande, E. Leon Monzon, I. Leoncino, M. Levai, P. Li, S. Li, X. and Lien, J. Lietava, R. Lindal, S. Lindenstruth, V. and Lippmann, C. Lisa, M. A. Ljunggren, H. M. Lodato, D. F. and Loenne, P. I. Loggins, V. R. Loginov, V. Loizides, C. and Lopez, X. Lopez Torres, E. Lowe, A. Lu, X. -G. Luettig, P. Lunardon, M. Luparello, G. Maevskaya, A. Mager, M. and Mahajan, S. Mahmood, S. M. Maire, A. Majka, R. D. and Malaev, M. Maldonado Cervantes, I. Malinina, L. Mal'Kevich, D. Malzacher, P. Mamonov, A. Manceau, L. Manko, V. and Manso, F. 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Nazarenko, S. and Nedosekin, A. Nellen, L. Ng, F. Nicassio, M. Niculescu, M. Niedziela, J. Nielsen, B. S. Nikolaev, S. Nikulin, S. and Nikulin, V. Nilsen, B. S. Noferini, F. Nomokonov, P. and Nooren, G. Norman, J. Nyanin, A. Nystrand, J. Oeschler, H. Oh, S. Oh, S. K. Ohlson, A. Okatan, A. Okubo, T. and Olah, L. Oleniacz, J. Oliveira Da Silva, A. C. and Onderwaater, J. Oppedisano, C. Ortiz Velasquez, A. and Oskarsson, A. Otwinowski, J. Oyama, K. Ozdemir, M. and Pachmayer, Y. Pagano, P. Paic, G. Pajares, C. Pal, S. K. and Pan, J. Pandey, A. K. Pant, D. Papikyan, V. and Pappalardo, G. S. Pareek, P. Park, W. J. Parmar, S. and Passfeld, A. Patalakha, D. I. Paticchio, V. Paul, B. and Pawlak, T. Peitzmann, T. Da Costa, H. Pereira De Oliveira Filho, E. Pereira Peresunko, D. Lara, C. E. Perez Peskov, V. and Pestov, Y. Petracek, V. Petrov, V. Petrovici, M. and Petta, C. Piano, S. Pikna, M. Pillot, P. Pinazza, O. and Pinsky, L. Piyarathna, D. B. Ploskon, M. Planinic, M. and Pluta, J. 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Rui, R. Russo, R. Ryabinkin, E. Ryabov, Y. and Rybicki, A. Sadovsky, S. Safarik, K. . Sahlmuller, B. and Sahoo, P. Sahoo, R. Sahoo, S. Sahu, P. K. Saini, J. and Sakai, S. Saleh, M. A. Salgado, C. A. Salzwedel, J. and Sambyal, S. Samsonov, V. Castro, X. Sanchez Sandor, L. and Sandoval, A. Sano, M. Santagati, G. Sarkar, D. and Scapparone, E. Scarlassara, F. Scharenberg, R. P. Schiaua, C. Schicker, R. Schmidt, C. Schmidt, H. R. Schuchmann, S. Schukraft, J. Schulc, M. Schuster, T. Schutz, Y. and Schwarz, K. Schweda, K. Scioli, G. Scomparin, E. Scott, R. Seeder, K. S. Segato, G. Seger, J. E. Sekiguchi, Y. and Selyuzhenkov, I. Senosi, K. Seo, J. Serradilla, E. and Sevcenco, A. Shabanov, A. Shabetai, A. Shadura, O. and Shahoyan, R. Shangaraev, A. Sharma, A. Sharma, N. and Shigaki, K. Shtejer, K. Sibiriak, Y. Siddhanta, S. and Sielewicz, K. M. Siemiarczuk, T. Silvermyr, D. Silvestre, C. and Simatovic, G. Singaraju, R. Singh, R. Singha, S. and Singhal, V. Sinha, B. C. Sinha, T. Sitar, B. Sitta, M. and Skaali, T. B. Skjerdal, K. Slupecki, M. Smirnov, N. and Snellings, R. J. M. Snellman, T. W. Sogaard, C. Soltz, R. and Song, J. Song, M. Song, Z. Soramel, F. Sorensen, S. and Spacek, M. Spiriti, E. Sputowska, I. and Spyropoulou-Stassinaki, M. Srivastava, B. K. Stachel, J. and Stan, I. Stefanek, G. Steinpreis, M. Stenlund, E. Steyn, G. Stiller, J. H. Stocco, D. Strmen, P. Suaide, A. A. P. and Sugitate, T. Suire, C. Suleymanov, M. Sultanov, R. and Sumbera, M. Symons, T. J. M. Szabo, A. de Toledo, A. Szanto and Szarka, I. Szczepankiewicz, A. Szymanski, M. Takahashi, J. Tanaka, N. Tangaro, M. A. Takaki, J. D. Tapia Peloni, A. Tarantola Tariq, M. Tarzila, M. G. Tauro, A. Tejeda Munoz, G. Telesca, A. Terasaki, K. Terrevoli, C. and Teyssier, B. Thaeder, J. Thomas, D. Tieulent, R. and Timmins, A. R. Toia, A. Trogolo, S. Trubnikov, V. and Trzaska, W. H. Tsuji, T. Tumkin, A. Turrisi, R. Tveter, T. S. Ullaland, K. Uras, A. Usai, G. L. Utrobicic, A. and Vajzer, M. Vala, M. Palomo, L. Valencia Vallero, S. and Van der Maarel, J. Van Hoorne, J. W. van Leeuwen, M. Vanat, T. Vyvre, P. Vande Varga, D. Vargas, A. Vargyas, M. and Varma, R. Vasileiou, M. Vasiliev, A. Vauthier, A. and Vechernin, V. Veen, A. M. Veldhoen, M. Velure, A. and Venaruzzo, M. Vercellin, E. Vergara Limon, S. Vernet, R. and Verweij, M. Vickovic, L. Viesti, G. Viinikainen, J. and Vilakazi, Z. Baillie, O. Villalobos Vinogradov, A. and Vinogradov, L. Vinogradov, Y. Virgili, T. Vislavicius, V. and Viyogi, Y. P. Vodopyanov, A. Voelkl, M. A. Voloshin, K. and Voloshin, S. A. Volpe, G. von Haller, B. Vorobyev, I. and Vranic, D. Vrlakova, J. Vulpescu, B. Vyushin, A. and Wagner, B. Wagner, J. Wang, H. Wang, M. Wang, Y. and Watanabe, D. Weber, M. Weber, S. G. Wessels, J. P. and Westerhoff, U. Wiechula, J. Wikne, J. Wilde, M. Wilk, G. and Wilkinson, J. Williams, M. C. S. Windelband, B. Winn, M. and Yaldo, C. G. Yamaguchi, Y. Yang, H. Yang, P. Yano, S. Yasnopolskiy, S. Yin, Z. Yokoyama, H. Yoo, I. -K. and Yurchenko, V. Yushmanov, I. Zaborowska, A. Zaccolo, V. and Zaman, A. Zampolli, C. Zanoli, H. J. C. Zaporozhets, S. and Zarochentsev, A. Zavada, P. Zaviyalov, N. Zbroszczyk, H. and Zgura, I. S. Zhalov, M. Zhang, H. Zhang, X. Zhang, Y. and Zhao, C. Zhigareva, N. Zhou, D. Zhou, Y. Zhou, Z. and Zhu, H. Zhu, J. Zhu, X. Zichichi, A. Zimmermann, A. and Zimmermann, M. B. Zinovjev, G. Zyzak, M. ALICE collaboration
Subjects: High Energy Physics::Experiment, Nuclear Experiment
Abstract: The strength of forward-backward (FB) multiplicity correlations is measured by the ALICE detector in proton-proton (pp) collisions at = 0.9, 2.76 and 7 TeV. The measurement is performed in the central pseudorapidity region (|eta| < 0.8) for the transverse momentum p (T) > 0.3 GeV/c. Two separate pseudorapidity windows of width (delta eta) ranging from 0.2 to 0.8 are chosen symmetrically around eta = 0. The multiplicity correlation strength (b (corr)) is studied as a function of the pseudorapidity gap (eta (gap)) between the two windows as well as the width of these windows. The correlation strength is found to decrease with increasing eta (gap) and shows a non-linear increase with delta eta. A sizable increase of the correlation strength with the collision energy, which cannot be explained exclusively by the increase of the mean multiplicity inside the windows, is observed. The correlation coefficient is also measured for multiplicities in different configurations of two azimuthal sectors selected within the symmetric FB eta-windows. Two different contributions, the short-range (SR) and the long-range (LR), are observed. The energy dependence of b (corr) is found to be weak for the SR component while it is strong for the LR component. Moreover, the correlation coefficient is studied for particles belonging to various transverse momentum intervals chosen to have the same mean multiplicity. Both SR and LR contributions to b (corr) are found to increase with p (T) in this case. Results are compared to PYTHIA and PHOJET event generators and to a string-based phenomenological model. The observed dependencies of b (corr) add new constraints on phenomenological models.
Published: 2015

47. Two-pion femtoscopy in p-Pb collisions at root(NN)-N-S=5.02 TeV

Author: Adam, J. Adamova, D. Aggarwal, M. M. Rinella, G. Aglieri and Agnello, M. Agrawal, N. Ahammed, Z. Ahmed, I. Ahn, S. U. and Aimo, I. Aiola, S. Ajaz, M. Akindinov, A. Alam, S. N. Aleksandrov, D. Alessandro, B. Alexandre, D. Molina, R. Alfaro Alici, A. Alkin, A. Alme, J. Alt, T. and Altinpinar, S. Altsybeev, I. Prado, C. Alves Garcia Andrei, C. Andronic, A. Anguelov, V. Anielski, J. Anticic, T. and Antinori, F. Antonioli, P. Aphecetche, L. Appelshaeuser, H. Arcelli, S. Armesto, N. Arnaldi, R. Aronsson, T. and Arsene, I. C. Arslandok, M. Augustinus, A. Averbeck, R. and Azmi, M. D. Bach, M. Badala, A. Baek, Y. W. Bagnasco, S. and Bailhache, R. Bala, R. Baldisseri, A. Ball, M. and Pedrosa, F. Baltasar Dos Santos Baral, R. C. Barbano, A. M. and Barbera, R. Barile, F. Barnafoeldi, G. G. Barnby, L. S. and Barret, V. Bartalini, P. Bartke, J. Bartsch, E. Basile, M. Bastid, N. Basu, S. Bathen, B. Batigne, G. and Camejo, A. Batista Batyunya, B. Batzing, P. C. Bearden, I. G. Beck, H. Bedda, C. Behera, N. K. Belikov, I. and Bellini, F. Martinez, H. Bello Bellwied, R. Belmont, R. and Belmont-Moreno, E. Belyaev, V. Bencedi, G. Beole, S. and Berceanu, I. Bercuci, A. Berdnikov, Y. Berenyi, D. and Bertens, R. A. Berzano, D. Betev, L. Bhasin, A. Bhat, I. R. Bhati, A. K. Bhattacharjee, B. Bhom, J. Bianchi, L. and Bianchi, N. Bianchin, C. Bielcik, J. Bielcikova, J. and Bilandzic, A. Biswas, S. Bjelogrlic, S. Blanco, F. Blau, D. Blume, C. Bock, F. Bogdanov, A. Boggild, H. and Boldizsar, L. Bombara, M. Book, J. Borel, H. Borissov, A. Borri, M. Bossu, F. Botje, M. Botta, E. Boettger, S. Braun-Munzinger, P. Bregant, M. Breitner, T. Broker, T. A. Browning, T. A. Broz, M. Brucken, E. J. Bruna, E. and Bruno, G. E. Budnikov, D. Buesching, H. Bufalino, S. and Buncic, P. Busch, O. Buthelezi, Z. Buxton, J. T. and Caffarri, D. Cai, X. Caines, H. Diaz, L. Calero Caliva, A. Villar, E. Calvo Camerini, P. Carena, F. Carena, W. and Castellanos, J. Castillo Castro, A. J. Casula, E. A. R. and Cavicchioli, C. Sanchez, C. Ceballos Cepila, J. Cerello, P. and Chang, B. Chapeland, S. Chartier, M. Charvet, J. L. and Chattopadhyay, S. Chattopadhyay, S. Chelnokov, V. Cherney, M. Cheshkov, C. Cheynis, B. Barroso, V. Chibante and Chinellato, D. D. Chochula, P. Choi, K. Chojnacki, M. and Choudhury, S. Christakoglou, P. Christensen, C. H. and Christiansen, P. Chujo, T. Chung, S. U. Cicalo, C. and Cifarelli, L. Cindolo, F. Cleymans, J. Colamaria, F. and Colella, D. Collu, A. Colocci, M. Balbastre, G. Conesa and del Valle, Z. Conesa Connors, M. E. Contreras, J. G. and Cormier, T. M. Morales, Y. Corrales Maldonado, I. Cortes and Cortese, P. Cosentino, M. R. Costa, F. Crochet, P. and Albino, R. Cruz Cuautle, E. Cunqueiro, L. Dahms, T. and Dainese, A. Danu, A. Das, D. Das, I. Das, S. Dash, A. Dash, S. De, S. De Caro, A. de Cataldo, G. de Cuveland, J. De Falco, A. De Gruttola, D. De Marco, N. and De Pasquale, S. Deisting, A. Deloff, A. Denes, E. and D'Erasmo, G. Di Bari, D. Di Mauro, A. Di Nezza, P. and Corchero, M. A. Diaz Dietel, T. Dillenseger, P. Divia, R. and Djuvsland, O. Dobrin, A. Dobrowolski, T. Gimenez, D. Domenicis Doenigus, B. Dordic, O. Dubey, A. K. Dubla, A. and Ducroux, L. Dupieux, P. Ehlers, R. J. Elia, D. and Engel, H. Erazmus, B. Erhardt, F. Eschweiler, D. and Espagnon, B. Estienne, M. Esumi, S. Evans, D. Evdokimov, S. Eyyubova, G. Fabbietti, L. Fabris, D. Faivre, J. and Fantoni, A. Fasel, M. Feldkamp, L. Felea, D. Feliciello, A. Feofilov, G. Ferencei, J. Tellez, A. Fernandez and Ferreiro, E. G. Ferretti, A. Festanti, A. Figiel, J. and Figueredo, M. A. S. Filchagin, S. Finogeev, D. Fionda, F. M. and Fiore, E. M. Floris, M. Foertsch, S. Foka, P. Fokin, S. Fragiacomo, E. Francescon, A. Frankenfeld, U. Fuchs, U. Furget, C. Furs, A. Girard, M. Fusco Gaardhoje, J. J. and Gagliardi, M. Gago, A. M. Gallio, M. Gangadharan, D. R. and Ganoti, P. Gao, C. Garabatos, C. Garcia-Solis, E. and Gargiulo, C. Gasik, P. Germain, M. Gheata, A. Gheata, M. and Ghosh, P. Ghosh, S. K. Gianotti, P. Giubellino, P. and Giubilato, P. Gladysz-Dziadus, E. Glaessel, P. Ramirez, A. Gomez Gonzalez-Zamora, P. Gorbunov, S. Goerlich, L. and Gotovac, S. Grabski, V. Graczykowski, L. K. Grelli, A. and Grigoras, A. Grigoras, C. Grigoriev, V. Grigoryan, A. and Grigoryan, S. Grinyov, B. Grion, N. Grosse-Oetringhaus, J. F. Grossiord, J. -Y. Grosso, R. Guber, F. Guernane, R. and Guerzoni, B. Gulbrandsen, K. Gulkanyan, H. Gunji, T. and Gupta, A. Gupta, R. Haake, R. Haaland, O. Hadjidakis, C. and Haiduc, M. Hamagaki, H. Hamar, G. Hanratty, L. D. and Hansen, A. Harris, J. W. Hartmann, H. Harton, A. and Hatzifotiadou, D. Hayashi, S. Heckel, S. T. Heide, M. and Helstrup, H. Herghelegiu, A. Corral, G. Herrera Hess, B. A. and Hetland, K. F. Hilden, T. E. Hillemanns, H. Hippolyte, B. Hristov, P. Huang, M. Humanic, T. J. Hussain, N. and Hussain, T. Hutter, D. Hwang, D. S. Ilkaev, R. Ilkiv, I. and Inaba, M. Ionita, C. Ippolitov, M. Irfan, M. Ivanov, M. Ivanov, V. Izucheev, V. Jacobs, P. M. Jahnke, C. and Jang, H. J. Janik, M. A. Jayarathna, P. H. S. Y. Jena, C. and Jena, S. Bustamante, R. T. Jimenez Jones, P. G. Jung, H. and Jusko, A. Kadyshevskiy, V. Kalinak, P. Kalweit, A. and Kamin, J. Kang, J. H. Kaplin, V. Kar, S. Uysal, A. Karasu Karavichev, O. Karavicheva, T. Karpechev, E. and Kebschull, U. Keidel, R. Keijdener, D. L. D. Keil, M. and Khan, K. H. Khan, M. M. Khan, P. Khan, S. A. Khanzadeev, A. Kharlov, Y. Kileng, B. Kim, B. Kim, D. W. Kim, D. J. Kim, H. Kim, J. S. Kim, M. Kim, M. Kim, S. and Kim, T. Kirsch, S. Kisel, I. Kiselev, S. Kisiel, A. and Kiss, G. Klay, J. L. Klein, C. Klein, J. Klein-Boesing, C. Kluge, A. Knichel, M. L. Knospe, A. G. Kobayashi, T. and Kobdaj, C. Kofarago, M. Koehler, M. K. Kollegger, T. and Kolojvari, A. Kondratiev, V. Kondratyeva, N. Kondratyuk, E. and Konevskikh, A. Kouzinopoulos, C. Kovalenko, V. Kowalski, M. Kox, S. Meethaleveedu, G. Koyithatta Kral, J. Kralik, I. Kravcakova, A. Krelina, M. Kretz, M. Krivda, M. and Krizek, F. Kryshen, E. Krzewicki, M. Kubera, A. M. and Kucera, V. Kucheriaev, Y. Kugathasan, T. Kuhn, C. and Kuijer, P. G. Kulakov, I. Kumar, J. Kurashvili, P. and Kurepin, A. Kurepin, A. B. Kuryakin, A. Kushpil, S. and Kweon, M. J. Kwon, Y. La Pointe, S. L. La Rocca, P. and Fernandes, C. Lagana Lakomov, I. Langoy, R. Lara, C. and Lardeux, A. Lattuca, A. Laudi, E. Lea, R. Leardini, L. and Lee, G. R. Lee, S. Legrand, I. Lehnert, J. Lemmon, R. C. Lenti, V. Leogrande, E. Monzon, I. Leon Leoncino, M. Levai, P. Li, S. Li, X. Lien, J. Lietava, R. and Lindal, S. Lindenstruth, V. Lippmann, C. Lisa, M. A. and Ljunggren, H. M. Lodato, D. F. Loenne, P. I. Loggins, V. R. and Loginov, V. Loizides, C. Lokesh, K. Lopez, X. and Torres, E. Lopez Lowe, A. Lu, X. -G. Luettig, P. and Lunardon, M. Luparello, G. Maevskaya, A. Mager, M. and Mahajan, S. Mahmood, S. M. Maire, A. Majka, R. D. and Malaev, M. Cervantes, I. Maldonado Malinina, L. Mal'Kevich, D. Malzacher, P. Mamonov, A. Manceau, L. Manko, V. and Manso, F. Manzari, V. Marchisone, M. Mares, J. and Margagliotti, G. V. Margotti, A. Margutti, J. Marin, A. and Markert, C. Marquard, M. Martashvili, I. Martin, N. A. and Blanco, J. Martin Martinengo, P. Martinez, M. I. Garcia, G. Martinez Pedreira, M. Martinez Martynov, Y. Mas, A. and Masciocchi, S. Masera, M. Masoni, A. Massacrier, L. and Mastroserio, A. Matyja, A. Mayer, C. Mazer, J. Mazzoni, M. A. Mcdonald, D. Meddi, F. Menchaca-Rocha, A. Meninno, E. Perez, J. Mercado Meres, M. Miake, Y. Mieskolainen, M. M. Mikhaylov, K. Milano, L. Milosevic, J. Minervini, L. M. Mischke, A. Mishra, A. N. Miskowiec, D. Mitra, J. and Mitu, C. M. Mohammadi, N. Mohanty, B. Molnar, L. and Zetina, L. Montano Montes, E. Morando, M. De Godoy, D. A. Moreira Moretto, S. Morreale, A. Morsch, A. Muccifora, V. Mudnic, E. Muehlheim, D. Muhuri, S. Mukherjee, M. and Mueller, H. Mulligan, J. D. Munhoz, M. G. Murray, S. and Musa, L. Musinsky, J. Nandi, B. K. Nania, R. Nappi, E. and Naru, M. U. Nattrass, C. Nayak, K. Nayak, T. K. and Nazarenko, S. Nedosekin, A. Nellen, L. Ng, F. Nicassio, M. Niculescu, M. Niedziela, J. Nielsen, B. S. Nikolaev, S. Nikulin, S. Nikulin, V. Noferini, F. Nomokonov, P. and Nooren, G. Norman, J. Nyanin, A. Nystrand, J. and Oeschler, H. Oh, S. Oh, S. K. Ohlson, A. Okatan, A. and Okubo, T. Olah, L. Oleniacz, J. Da Silva, A. C. Oliveira and Oliver, M. H. Onderwaater, J. Oppedisano, C. Velasquez, A. Ortiz Oskarsson, A. Otwinowski, J. Oyama, K. Ozdemir, M. and Pachmayer, Y. Pagano, P. Paic, G. Pajares, C. Pal, S. K. Pan, J. Pant, D. Papikyan, V. Pappalardo, G. S. and Pareek, P. Park, W. J. Parmar, S. Passfeld, A. and Paticchio, V. Paul, B. Pawlak, T. Peitzmann, T. Da Costa, H. Pereira De Oliveira Filho, E. Pereira Peresunko, D. and Lara, C. E. Perez Peskov, V. Pestov, Y. Petracek, V. and Petrov, V. Petrovici, M. Petta, C. Piano, S. Pikna, M. and Pillot, P. Pinazza, O. Pinsky, L. Piyarathna, D. B. and Ploskon, M. Planinic, M. Pluta, J. Pochybova, S. and Podesta-Lerma, P. L. M. Poghosyan, M. G. Polichtchouk, B. and Poljak, N. Poonsawat, W. Pop, A. Porteboeuf-Houssais, S. and Porter, J. Pospisil, J. Prasad, S. K. Preghenella, R. and Prino, F. Pruneau, C. A. Pshenichnov, I. Puccio, M. and Puddu, G. Pujahari, P. Punin, V. Putschke, J. Qvigstad, H. Rachevski, A. Raha, S. Rajput, S. Rak, J. and Rakotozafindrabe, A. Ramello, L. Raniwala, R. Raniwala, S. and Raesaenen, S. S. Rascanu, B. T. Rathee, D. Razazi, V. and Read, K. F. Real, J. S. Redlich, K. Reed, R. J. and Rehman, A. Reichelt, P. Reicher, M. Reidt, F. Ren, X. and Renfordt, R. Reolon, A. R. Reshetin, A. Rettig, F. and Revol, J. -P. Reygers, K. Riabov, V. Ricci, R. A. and Richert, T. Richter, M. Riedler, P. Riegler, W. Riggi, F. Ristea, C. Rivetti, A. Rocco, E. Cahuantzi, M. Rodriguez Manso, A. Rodriguez Roed, K. Rogochaya, E. and Rohr, D. Roehrich, D. Romita, R. Ronchetti, F. and Ronflette, L. Rosnet, P. Rossi, A. Roukoutakis, F. Roy, A. Roy, C. Roy, P. Montero, A. J. Rubio Rui, R. and Russo, R. Ryabinkin, E. Ryabov, Y. Rybicki, A. Sadovsky, S. Safarik, K. Sahlmuller, B. Sahoo, P. Sahoo, R. and Sahoo, S. Sahu, P. K. Saini, J. Sakai, S. Saleh, M. A. and Salgado, C. A. Salzwedel, J. Sambyal, S. Samsonov, V. and Castro, X. Sanchez Sandor, L. Sandoval, A. Sano, M. and Santagati, G. Sarkar, D. Scapparone, E. Scarlassara, F. and Scharenberg, R. P. Schiaua, C. Schicker, R. Schmidt, C. and Schmidt, H. R. Schuchmann, S. Schukraft, J. Schulc, M. and Schuster, T. Schutz, Y. Schwarz, K. Schweda, K. Scioli, G. Scomparin, E. Scott, R. Seeder, K. S. Seger, J. E. and Sekiguchi, Y. Selyuzhenkov, I. Senosi, K. Seo, J. and Serradilla, E. Sevcenco, A. Shabanov, A. Shabetai, A. and Shadura, O. Shahoyan, R. Shangaraev, A. Sharma, A. and Sharma, N. Shigaki, K. Shtejer, K. Sibiriak, Y. and Siddhanta, S. Sielewicz, K. M. Siemiarczuk, T. Silvermyr, D. and Silvestre, C. Simatovic, G. Simonetti, G. Singaraju, R. and Singh, R. Singha, S. Singhal, V. Sinha, B. C. Sinha, T. Sitar, B. Sitta, M. Skaali, T. B. Skjerdal, K. and Slupecki, M. Smirnov, N. Snellings, R. J. M. Snellman, T. W. and Sogaard, C. Soltz, R. Song, J. Song, M. Song, Z. and Soramel, F. Sorensen, S. Spacek, M. Spiriti, E. and Sputowska, I. Spyropoulou-Stassinaki, M. Srivastava, B. K. and Stachel, J. Stan, I. Stefanek, G. Steinpreis, M. and Stenlund, E. Steyn, G. Stille, J. H. Suleymanov, M. and Sultanov, R. Sumbera, M. Symons, T. J. M. Szabo, A. de Toledo, A. Szanto Szarka, I. Szczepankiewicz, A. Szymanski, M. Takahashi, J. Tanaka, N. Tangaro, M. A. Takaki, J. D. Tapia Peloni, A. Tarantola Tariq, M. Tarzila, M. G. and Tauro, A. Munoz, G. Tejeda Telesca, A. Terasaki, K. and Terrevoli, C. Teyssier, B. Thaeder, J. Thomas, D. and Tieulent, R. Timmins, A. R. Toia, A. Trogolo, S. and Trubnikov, V. Trzaska, W. H. Tsuji, T. Tumkin, A. and Turrisi, R. Tveter, T. S. Ullaland, K. Uras, A. Usai, G. L. Utrobicic, A. Vajzer, M. Vala, M. Palomo, L. Valencia and Vallero, S. Van der Maarel, J. Van Hoorne, J. W. van Leeuwen, M. Vanat, T. Vyvre, P. Vande Varga, D. Vargas, A. Vargyas, M. Varma, R. Vasileiou, M. Vasiliev, A. and Vauthier, A. Vechernin, V. Veen, A. M. Veldhoen, M. and Velure, A. Venaruzzo, M. Vercellin, E. Limon, S. Vergara and Vernet, R. Verweij, M. Vickovic, L. Viesti, G. and Viinikainen, J. Vilakazi, Z. Baillie, O. Villalobos and Vinogradov, A. Vinogradov, L. Vinogradov, Y. Virgili, T. and Vislavicius, V. Viyogi, Y. P. Vodopyanov, A. Voelkl, M. A. and Voloshin, K. Voloshin, S. A. Volpe, G. von Haller, B. and Vorobyev, I. Vranic, D. Vrlakova, J. Vulpescu, B. and Vyushin, A. Wagner, B. Wagner, J. Wang, H. Wang, M. and Wang, Y. Watanabe, D. Weber, M. Weber, S. G. Wessels, J. P. Westerhoff, U. Wiechula, J. Wikne, J. Wilde, M. and Wilk, G. Wilkinson, J. Williams, M. C. S. Windelband, B. and Winn, M. Yaldo, C. G. Yamaguchi, Y. Yang, H. Yang, P. and Yano, S. Yasnopolskiy, S. Yin, Z. Yokoyama, H. Yoo, I. -K. Yurchenko, V. Yushmanov, I. Zaborowska, A. and Zaccolo, V. Zaman, A. Zampolli, C. Zanoli, H. J. C. and Zaporozhets, S. Zarochentsev, A. Zavada, P. Zaviyalov, N. and Zbroszczyk, H. Zgura, I. S. Zhalov, M. Zhang, H. and Zhang, X. Zhang, Y. Zhao, C. Zhigareva, N. Zhou, D. and Zhou, Y. Zhou, Z. Zhu, H. Zhu, J. Zhu, X. Zichichi, A. Zimmermann, A. Zimmermann, M. B. Zinovjev, G. Zyzak, M.
Subjects: Nuclear Experiment
Abstract: We report the results of the femtoscopic analysis of pairs of identical pions measured in p-Pb collisions at root(NN)-N-S = 5.02 TeV. Femtoscopic radii are determined as a function of event multiplicity and pair momentum in three spatial dimensions. As in the pp collision system, the analysis is complicated by the presence of sizable background correlation structures in addition to the femtoscopic signal. The radii increase with event multiplicity and decrease with pair transverse momentum. When taken at comparable multiplicity, the radii measured in p-Pb collisions, at high multiplicity and low pair transverse momentum, are 10%-20% higher than those observed in pp collisions but below those observed in A-A collisions. The results are compared to hydrodynamic predictions at large event multiplicity as well as discussed in the context of calculations based on gluon saturation.
Published: 2015

48. Flow injection system for hydrolysable tannin determination

Author: Fernanda S. Chaves, Edilene Cristina Ferreira, C. M. Bossu, Eveline A. Menezes, and Ana Rita A. Nogueira
Subjects: Hydrolysable tannin, chemistry.chemical_classification, Potassium iodate, Flow injection analysis, Detection limit, Chromatography, Analytical chemistry, Repeatability, Analytical Chemistry, Volumetric flow rate, chemistry.chemical_compound, chemistry, Reagent, Tannic acid, Spectroscopy
Abstract: A flow injection system was proposed to evaluate the transient product of a colorimetric reaction between hydrolysable tannin and potassium iodate (KIO 3 ) solution. The system optimization was accomplished by using statistical methods based on experimental design. Flow rate of KIO 3 solution, sample volume, carrier flow rate, and reaction coil were the selected factors for evaluation. On screening step, complete factorial 2 4 was used and two levels for each selected factor were studied. For the optimization phase, a centered face composite design 2 2 + star was employed to evaluate sample volume and flow rate of KIO 3 solution, which were the factors identified in the screening phase as having more influence on the absorbance signal. After optimization, the proposed system was compared with batch determination. Some characteristics, such as analytical frequency, reagent consumption and chemical residues generation presented better results by the use of the proposed system if compared with batch method. The system presented good repeatability with standard deviation lower than 3%, for n = 10, linearity ( R 2 = 0.9974) for tannic acid standard, analytical frequency of 15 injections h − 1 and limit of quantification of 24 mg L − 1 of tannic acid. Good results were obtained when the proposed system was applied to hydrolysable tannin determination in Stryphnodendron barbatimao , Eucalyptus citriodora and Phyllanthus niruri , samples of plants commonly used in popular medicine.
Published: 2006

49. Ecological constraint and the evolution of sexual dichromatism in darters

Author: Christen M, Bossu and Thomas J, Near
Subjects: Evolution, Molecular, Male, Sex Characteristics, Perches, Predatory Behavior, Animals, Female, Skin Pigmentation, Mating Preference, Animal, Selection, Genetic, Ecosystem
Abstract: It is not known how environmental pressures and sexual selection interact to influence the evolution of extravagant male traits. Sexual and natural selection are often viewed as antagonistic forces shaping the evolution of visual signals, where conspicuousness is favored by sexual selection and crypsis is favored by natural selection. Although typically investigated independently, the interaction between natural and sexual selection remains poorly understood. Here, we investigate whether sexual dichromatism evolves stochastically, independent from, or in concert with habitat use in darters, a species-rich lineage of North American freshwater fish. We find the evolution of sexual dichromatism is coupled to habitat use in darter species. Comparative analyses reveal that mid-water darter lineages exhibit a narrow distribution of dichromatism trait space surrounding a low optimum, suggesting a constraint imposed on the evolution of dichromatism, potentially through predator-mediated selection. Alternatively, the transition to benthic habitats coincides with greater variability in the levels of dichromatism that surround a higher optimum, likely due to relaxation of the predator-mediated selection and heterogeneous microhabitat dependent selection regimes. These results suggest a complex interaction of sexual selection with potentially two mechanisms of natural selection, predation and sensory drive, that influence the evolution of diverse male nuptial coloration in darters.
Published: 2014

50. Embrapa's experience in the production and development of agriculture reference materials

Author: T R Verhalen, P. H. T. Silva, Gilberto Batista de Souza, C. M. Bossu, Ana Rita A. Nogueira, S. R. Bianchi, Caroline Santos Silva, and A A J Peixoto
Subjects: History, Engineering, business.industry, media_common.quotation_subject, Environmental resource management, Computer Science Applications, Education, Engineering management, Agriculture, Production (economics), Quality (business), Analytical Testing, business, media_common
Abstract: The main challenge of Embrapa is to develop a model of genuine Brazilian tropical agriculture and livestock. To get this task, the quality of laboratories results is mandatory, increasing the demand for reference materials. Projects were proposed to produce reference materials to support the national agriculture laboratories and consolidate a network able to perform reliable and reproducible analytical testing laboratory within the internationally standards required. Reference materials were produced and available to interested laboratories and collaborative tests were conducted to obtain consensus values. The results and statistical evaluations were performed with the use of software developed by Embrapa Pecuaria Sudeste.
Published: 2016

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