10 research outputs found

    Managed honeybees and South American bumblebees exhibit complementary foraging patterns in highbush blueberry

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    Despite Apis mellifera being the most widely managed pollinator to enhance crop production, they are not the most suitable species for highbush blueberries, which possess restrictive floral morphology and require buzz-pollination. Thus, the South American bumblebee Bombus pauloensis is increasingly managed as an alternative species in this crop alongside honeybees. Herein, we evaluated the foraging patterns of the two species, concerning the potential pollen transfer between two blueberry co-blooming cultivars grown under open high tunnels during two seasons considering different colony densities. Both managed pollinators showed different foraging patterns, influenced by the cultivar identity which varied in their floral morphology and nectar production. Our results demonstrate that both species are efficient foragers on highbush blueberry and further suggest that they contribute positively to its pollination in complementary ways: while bumblebees were more effective at the individual level (visited more flowers and carried more pollen), the greater densities of honeybee foragers overcame the difficulties imposed by the flower morphology, irrespective of the stocking rate. This study supports the addition of managed native bumblebees alongside honeybees to enhance pollination services and emphasizes the importance of examining behavioural aspects to optimize management practices in pollinator-dependent crops.Instituto de IngenierĂ­a RuralFil: Estravis-Barcala, MarĂ­a Cecilia. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y BiologĂ­a Experimental; ArgentinaFil: Estravis-Barcala, MarĂ­a Cecilia. CONICET-Universidad de Buenos Aires. Instituto de FisiologĂ­a, BiologĂ­a Molecular y Neurociencias (IFIBYNE); ArgentinaFil: Macri, Ivana. CONICET-Universidad de Buenos. Instituto de FisiologĂ­a, BiologĂ­a Molecular y Neurociencias; ArgentinaFil: Macri, Ivana. Instituto Nacional de TecnologĂ­a Agropecuaria (INTA). Instituto de IngenierĂ­a Rural; ArgentinaFil: Nery, Denise. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y BiologĂ­a Experimental; ArgentinaFil: Nery, Denise. CONICET-Universidad de Buenos Aires. Instituto de FisiologĂ­a, BiologĂ­a Molecular y Neurociencias (IFIBYNE); ArgentinaFil: Farina, Walter M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y BiologĂ­a Experimental; ArgentinaFil: Farina, Walter M. CONICET-Universidad de Buenos Aires. Instituto de FisiologĂ­a, BiologĂ­a Molecular y Neurociencias (IFIBYNE); ArgentinaFil: Palottini, Florencia. CONICET-Universidad de Buenos Aires. Instituto de FisiologĂ­a, BiologĂ­a Molecular y Neurociencias (IFIBYNE); ArgentinaFil: Palottini, Florencia. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y BiologĂ­a Experimental; Argentin

    Curcumin exerts a protective effect against obesity and liver injury induced by an atherogenic diet

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    Background: Curcumin (Cur) is a natural yellow polyphenol extracted from the turmeric rhizome (Curcuma longa). Cur is known for its potential therapeutic properties as an analgesic, anti-inflammatory, antioxidant, antimicrobial, hepatoprotective, and anti-mutagenic, although some of these biological activities remain unproven. Epidemiological studies have shown a positive relationship between high-fat diets and diet-related chronic diseases. We hypothesized that some adverse effects of consuming atherogenic or high-fat diets (AD) can be ameliorated by Cur supplementation. Using an experimental model of rats, this study investigated the significance of Cur when it is given as a supplement in an AD. Methods: Healthy adult Wistar rats were randomly assigned to one of three groups. Controls (C) received a standard diet and experimental rats were fed with AD or AD+Cur for 5 weeks. Cur (100 mg/kg body weight) was given orally daily, plus piperine (5 mg/kg body weight). The effect of Cur supplementation was studied on zoometrics, visceral fat content, serum lipids profile, hepatosteatosis, liver function and oxidative status. Results: Diets did not alter energy consumption. As compared to the other groups, AD+Cur group showed a lower total visceral fat content, percentage of perirenal, mesenteric, and pelvic fat, and body weight gain (P0.05). AD induced a liver injury with macrovesicular steatosis and portal inflammation. AD+Cur rats presented microvesicular steatosis with no inflammation, achieving the lowest level of alanine aminotransferase (ALT; P<0.0001) and reductions of aspartate aminotransferase (AST; P<0.0001). Liver homogenates from AD+Cur showed that Cur supplementation reduced the dichlorofluorescein diacetate (DCFH-DA) oxidation rate induced by AD by 25 % and deferoxamine and superoxide dismutase inhibited DCFH-DA. Conclusion: Cur as a dietary supplement showed a protective effect against obesity and inflammation, but its cardioprotective ability remained unproved. Cur may develop as a promising therapeutic agent for liver diseases induced by oxidative stress. This study provides supporting evidence to confirm the beneficial effects of curcumin from the point of view of functional food science.Fil: Antona, María Eugenia. Universidad de Buenos Aires. Facultad de Odontología. Cåtedra de Bioquímica General y Bucal; ArgentinaFil: Gonzålez, Paula Mariela. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Bioquímica y Medicina Molecular. Universidad de Buenos Aires. Facultad Medicina. Instituto de Bioquímica y Medicina Molecular; ArgentinaFil: Ramos, Cecilia. Universidad de Buenos Aires. Facultad de Odontología. Cåtedra de Bioquímica General y Bucal; ArgentinaFil: Cabrera, Joaquin. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Bioquímica y Medicina Molecular. Universidad de Buenos Aires. Facultad Medicina. Instituto de Bioquímica y Medicina Molecular; ArgentinaFil: Olano, Carolina. Universidad de Buenos Aires. Facultad de Farmacia y Bioquimica. Instituto de Fisiopatologia y Bioquimica Clinica.; ArgentinaFil: Morales, Maria Celina. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Fisiopatología Cardiovascular; ArgentinaFil: Zago, Valeria. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Farmacia y Bioquimica. Instituto de Fisiopatologia y Bioquimica Clinica.; ArgentinaFil: Steimetz, Tammy. Universidad de Buenos Aires. Facultad de Odontología; ArgentinaFil: Puntarulo, Susana Ángela. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Bioquímica y Medicina Molecular. Universidad de Buenos Aires. Facultad Medicina. Instituto de Bioquímica y Medicina Molecular; ArgentinaFil: Friedman, Silvia María. Universidad de Buenos Aires. Facultad de Odontología. Cåtedra de Bioquímica General y Bucal; ArgentinaFil: Macri, Elisa Vanesa. Universidad de Buenos Aires. Facultad de Odontología. Cåtedra de Bioquímica General y Bucal; Argentin

    GW150914: First search for the electromagnetic counterpart of a gravitational-wave event by the TOROS collaboration

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    We present the results of the optical follow-up conducted by the TOROS collaboration of the first gravitational-wave event GW150914. We conducted unfiltered CCD observations (0.35-1 micron) with the 1.5-m telescope at Bosque Alegre starting ~2.5 days after the alarm. Given our limited field of view (~100 square arcmin), we targeted 14 nearby galaxies that were observable from the site and were located within the area of higher localization probability. We analyzed the observations using two independent implementations of difference-imaging algorithms, followed by a Random-Forest-based algorithm to discriminate between real and bogus transients. We did not find any bona fide transient event in the surveyed area down to a 5-sigma limiting magnitude of r=21.7 mag (AB). Our result is consistent with the LIGO detection of a binary black hole merger, for which no electromagnetic counterparts are expected, and with the expected rates of other astrophysical transients.Comment: ApJ Letters, in pres

    Fried Sunflower Oil intake affects Bone Quality, in Growing Rats

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    The effect of consuming a diet containing sunflower oil, which wasrepeatedly used to fry potatoes, on bone mass and biomechanicalcompetence in growing rats, was investigated. Male Wistar rats (21±1days old) (n=34) were assigned at weaning to one of three diet groups for8 weeks: those fed a control diet (C; n=10), a sunflower oil (SFO; n=12)diet or a SFO diet which was repeatedly heated (SFOx; n=12); both mixedwith a commercial rat chow at weight ratio of 13% (w/w). Zoometrics,food intake, serum fatty acids composition and lipid profile, total skeletonbone mineral density (BMD), bone mineral content (BMC), and femurbiomechanical competence were assessed. Animals fed SFOx diet hadaltered body growth and showed both increased serum total cholesterol(T-chol) and non-high-density lipoprotein cholesterol (non-HDL-chol).SFOx rats also showed marked differences in BMC, their femur andtibiae had the lowest structural and geometrical properties, but materialproperties were unchanged. This study showed that growing male ratsconsuming a SFOx diet adversely affected their body growth, and lipidmetabolism. Additionally their BMC and bone biomechanical propertieswere also altered due to modifications in bone geometric design.Fil: Macri, Elisa Vanesa. Universidad de Buenos Aires. Facultad de Odontología; ArgentinaFil: Ramos, Cecilia. Universidad de Buenos Aires. Facultad de Odontología; ArgentinaFil: Bozzini, Clarisa. Universidad de Buenos Aires. Facultad de Odontología; ArgentinaFil: Zago, Valeria. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Bioquímica Clínica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay; ArgentinaFil: Giacomino, Silvia. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica; ArgentinaFil: Pellegrino, Nestor. Universidad de Buenos Aires. Facultad de Odontología; ArgentinaFil: Boyer, Patricia Monica. Universidad de Buenos Aires. Facultad de Odontología; ArgentinaFil: Lifshitz, Fima. Universidad de Buenos Aires. Facultad de Odontología; ArgentinaFil: Friedman, Silvia María. Universidad de Buenos Aires. Facultad de Odontología; Argentin

    A wide angle search for hot jupiters and pre-main sequence binaries in Young Stellar Associations

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    The past two decades have seen a significant advancement in the detection, classification and understanding of exoplanets and binary star systems. The vast majority of these systems consist of stars on the main sequence or on the giant branch, leading to a dearth of knowledge of properties at early times (<50 Myr). Only one transiting planet candidate and a dozen eclipsing binaries are known among pre-main sequence objects, yet these are the systems that can provide the best constraints on stellar and planetary formation models. We have recently completed a photometric survey of 3 young (<50 Myr), nearby (D<150 pc) moving groups with a small-aperture instrument, nicknamed ``AggieCam''. We detected 7 candidate Hot Jupiters and over 200 likely pre-main sequence binaries, which are now being followed up photometrically and spectroscopically.Fil: Oelkers, Ryan J.. Texas A&M University; Estados UnidosFil: Macri, Lucas M.. Texas A&M University; Estados UnidosFil: Marshall, Jennifer L.. Texas A&M University; Estados UnidosFil: DePoy, Darren L.. Texas A&M University; Estados UnidosFil: Colazo, Carlos Roberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; ArgentinaFil: Guzzo, Pablo. Observatorio Astronomico de la Universidad Nacional de Cordoba; ArgentinaFil: Garcia Lambas, Diego Rodolfo. Observatorio Astronomico de la Universidad Nacional de Cordoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; ArgentinaFil: Quiñones, Cecilia. Observatorio Astronomico de la Universidad Nacional de Cordoba; ArgentinaFil: Stringer, Katelyn. Texas A&M University; Estados UnidosFil: Tapia, Luis. Observatorio Astronomico de la Universidad Nacional de Cordoba; ArgentinaFil: Wisdom, Colin. Texas A&M University; Estados Unido

    Observations of the First Electromagnetic Counterpart to a Gravitational-wave Source by the TOROS Collaboration

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    We present the results of prompt optical follow-up of the electromagnetic counterpart of the gravitational-wave event GW170817 by the Transient Optical Robotic Observatory of the South Collaboration. We detected highly significant dimming in the light curves of the counterpart (Δg = 0.17 ± 0.03 mag, Δr = 0.14 ± 0.02 mag, Δi = 0.10 ± 0.03 mag) over the course of only 80 minutes of observations obtained ∌35 hr after the trigger with the T80-South telescope. A second epoch of observations, obtained ∌59 hr after the event with the EABA 1.5 m telescope, confirms the fast fading nature of the transient. The observed colors of the counterpart suggest that this event was a "blue kilonova" relatively free of lanthanides.Fil: DĂ­az, Mario Claudio. University of Texas; Estados UnidosFil: Macri, Lucas M.. Texas A&M University; Estados UnidosFil: Garcia Lambas, Diego Rodolfo. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - CĂłrdoba. Instituto de AstronomĂ­a TeĂłrica y Experimental. Universidad Nacional de CĂłrdoba. Observatorio AstronĂłmico de CĂłrdoba. Instituto de AstronomĂ­a TeĂłrica y Experimental; ArgentinaFil: Mendes de Oliveira, C.. Universidade de Sao Paulo; BrasilFil: Nilo Castellon, Jose Luis Emilio. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - CĂłrdoba. Instituto de AstronomĂ­a TeĂłrica y Experimental. Universidad Nacional de CĂłrdoba. Observatorio AstronĂłmico de CĂłrdoba. Instituto de AstronomĂ­a TeĂłrica y Experimental; Argentina. Universidad de La Serena; ChileFil: Ribeiro, T.. Universidade Federal de Sergipe; BrasilFil: SĂĄnchez, Bruno Orlando. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - CĂłrdoba. Instituto de AstronomĂ­a TeĂłrica y Experimental. Universidad Nacional de CĂłrdoba. Observatorio AstronĂłmico de CĂłrdoba. Instituto de AstronomĂ­a TeĂłrica y Experimental; ArgentinaFil: Schoenell, W.. Universidade de Sao Paulo; Brasil. Universidade Federal de Santa Catarina; BrasilFil: Abramo, L. R.. Universidade Federal de Santa Catarina; Brasil. Universidade de Sao Paulo; BrasilFil: Akras, S.. MinistĂ©rio de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; BrasilFil: Alcaniz, J. S.. MinistĂ©rio de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; BrasilFil: Artola, R.. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - CĂłrdoba. Instituto de AstronomĂ­a TeĂłrica y Experimental. Universidad Nacional de CĂłrdoba. Observatorio AstronĂłmico de CĂłrdoba. Instituto de AstronomĂ­a TeĂłrica y Experimental; ArgentinaFil: Beroiz, Martin Isidro Ramon. University of Texas; Estados UnidosFil: Bonoli, S.. Centro de Estudios de FĂ­sica del Cosmos de AragĂłn; EspañaFil: Cabral, Juan Bautista. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - CĂłrdoba. Instituto de AstronomĂ­a TeĂłrica y Experimental. Universidad Nacional de CĂłrdoba. Observatorio AstronĂłmico de CĂłrdoba. Instituto de AstronomĂ­a TeĂłrica y Experimental; ArgentinaFil: Camuccio, R.. University of Texas; Estados UnidosFil: Castillo, M.. University of Texas; Estados UnidosFil: Chavushyan, Vahram. Instituto Nacional de AstrofĂ­sica, Óptica y ElectrĂłnica; MĂ©xicoFil: Coelho, P.. Universidade de Sao Paulo; BrasilFil: Colazo, Juan Cruz. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - CĂłrdoba. Instituto de AstronomĂ­a TeĂłrica y Experimental. Universidad Nacional de CĂłrdoba. Observatorio AstronĂłmico de CĂłrdoba. Instituto de AstronomĂ­a TeĂłrica y Experimental; ArgentinaFil: Costa Duarte, M. V.. Universidade de Sao Paulo; BrasilFil: Cuevas Larenas, H.. Universidad de La Serena; ChileFil: DePoy, D. L.. Texas A&M University; Estados UnidosFil: Dominguez Romero, Mariano Javier de Leon. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - CĂłrdoba. Instituto de AstronomĂ­a TeĂłrica y Experimental. Universidad Nacional de CĂłrdoba. Observatorio AstronĂłmico de CĂłrdoba. Instituto de AstronomĂ­a TeĂłrica y Experimental; ArgentinaFil: Dultzin, Debora. Universidad Nacional Autonoma de Mexico. Instituto de Astronomia; MĂ©xicoFil: FernĂĄndez, D.. Pontificia Universidad CatĂłlica de Chile; ChileFil: GarcĂ­a, J.. University of Texas; Estados UnidosFil: Girardini, C.. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - CĂłrdoba. Instituto de AstronomĂ­a TeĂłrica y Experimental. Universidad Nacional de CĂłrdoba. Observatorio AstronĂłmico de CĂłrdoba. Instituto de AstronomĂ­a TeĂłrica y Experimental; ArgentinaFil: Goncalves Gama, Diana Renata. Universidade Federal do Rio de Janeiro; BrasilFil: Gonçalves, T. S.. Universidade Federal do Rio de Janeiro; BrasilFil: Gurovich, Sebastian. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - CĂłrdoba. Instituto de AstronomĂ­a TeĂłrica y Experimental. Universidad Nacional de CĂłrdoba. Observatorio AstronĂłmico de CĂłrdoba. Instituto de AstronomĂ­a TeĂłrica y Experimental; ArgentinaFil: JimĂ©nez Teja, Y.. MinistĂ©rio de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; BrasilFil: Kanaan, A.. Universidade Federal de Santa Catarina; BrasilFil: Lares, M.. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - CĂłrdoba. Instituto de AstronomĂ­a TeĂłrica y Experimental. Universidad Nacional de CĂłrdoba. Observatorio AstronĂłmico de CĂłrdoba. Instituto de AstronomĂ­a TeĂłrica y Experimental; ArgentinaFil: Lopes de Oliveira, R.. Universidade Federal de Sergipe; Brasil. National Aeronautics and Space Administration; Estados UnidosFil: LĂłpez Cruz, Omar. Instituto Nacional de AstrofĂ­sica, Óptica y ElectrĂłnica; MĂ©xicoFil: Marshall, J. L.. Texas A&M University; Estados UnidosFil: Melia, R.. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - CĂłrdoba. Instituto de AstronomĂ­a TeĂłrica y Experimental. Universidad Nacional de CĂłrdoba. Observatorio AstronĂłmico de CĂłrdoba. Instituto de AstronomĂ­a TeĂłrica y Experimental; ArgentinaFil: Molino, A.. Universidade de Sao Paulo; BrasilFil: Padilla, Nelson. Pontificia Universidad CatĂłlica de Chile; ChileFil: Peñuela, T.. University of Texas; Estados Unidos. Ludwig Maximilian UniversitĂ€t Munich; AlemaniaFil: Placco, V. M.. University of Notre Dame; Estados Unidos. Center for the Evolution of the Elements. Joint Institute for Nuclear Astrophysics; Estados UnidosFil: Quiñones, Cecilia. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - CĂłrdoba. Instituto de AstronomĂ­a TeĂłrica y Experimental. Universidad Nacional de CĂłrdoba. Observatorio AstronĂłmico de CĂłrdoba. Instituto de AstronomĂ­a TeĂłrica y Experimental; ArgentinaFil: Rivera, A. RamĂ­rez. Universidad de La Serena; ChileFil: Renzi, Victor Alberto. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - CĂłrdoba. Instituto de AstronomĂ­a TeĂłrica y Experimental. Universidad Nacional de CĂłrdoba. Observatorio AstronĂłmico de CĂłrdoba. Instituto de AstronomĂ­a TeĂłrica y Experimental; ArgentinaFil: Riguccini, L.. Universidade Federal do Rio de Janeiro; BrasilFil: RĂ­os LĂłpez, Emmanuel. Instituto Nacional de AstrofĂ­sica, Óptica y ElectrĂłnica; MĂ©xicoFil: Rodriguez, Horacio Oscar. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - CĂłrdoba. Instituto de AstronomĂ­a TeĂłrica y Experimental. Universidad Nacional de CĂłrdoba. Observatorio AstronĂłmico de CĂłrdoba. Instituto de AstronomĂ­a TeĂłrica y Experimental; ArgentinaFil: Sampedro, L.. Universidade de Sao Paulo; BrasilFil: Schneiter, Ernesto MatĂ­as. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - CĂłrdoba. Instituto de AstronomĂ­a TeĂłrica y Experimental. Universidad Nacional de CĂłrdoba. Observatorio AstronĂłmico de CĂłrdoba. Instituto de AstronomĂ­a TeĂłrica y Experimental; ArgentinaFil: SodrĂ©, Laerte. Universidade de Sao Paulo; BrasilFil: Starck Cuffini, Manuel DarĂ­o. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - CĂłrdoba. Instituto de AstronomĂ­a TeĂłrica y Experimental. Universidad Nacional de CĂłrdoba. Observatorio AstronĂłmico de CĂłrdoba. Instituto de AstronomĂ­a TeĂłrica y Experimental; ArgentinaFil: Torres Flores, S.. Universidad de La Serena; ChileFil: Tornatore, M.. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - CĂłrdoba. Instituto de AstronomĂ­a TeĂłrica y Experimental. Universidad Nacional de CĂłrdoba. Observatorio AstronĂłmico de CĂłrdoba. Instituto de AstronomĂ­a TeĂłrica y Experimental; ArgentinaFil: ZadroĆŒny, A.. University of Texas; Estados Unido

    Measurement of pseudorapidity distributions of charged particles in proton-proton collisions at sqrt(s) = 8 TeV by the CMS and TOTEM experiments

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    Pseudorapidity ( η\eta ) distributions of charged particles produced in proton–proton collisions at a centre-of-mass energy of 8  TeV~\text {TeV} are measured in the ranges ∣η∣<2.2|\eta | < 2.2 and 5.3<∣η∣<6.45.3 < |\eta | < 6.4 covered by the CMS and TOTEM detectors, respectively. The data correspond to an integrated luminosity of L=45ÎŒb−1\mathcal {L} = 45 \mu {\mathrm {b}}^{-1} . Measurements are presented for three event categories. The most inclusive category is sensitive to 91–96 % of the total inelastic proton–proton cross section. The other two categories are disjoint subsets of the inclusive sample that are either enhanced or depleted in single diffractive dissociation events. The data are compared to models used to describe high-energy hadronic interactions. None of the models considered provide a consistent description of the measured distributions
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