Institution
National University of La Plata
Education•La Plata, Argentina•
About: National University of La Plata is a education organization based out in La Plata, Argentina. It is known for research contribution in the topics: Population & Stars. The organization has 12993 authors who have published 30013 publications receiving 495118 citations. The organization is also known as: UNLP & Universidad Nacional de La Plata.
Papers published on a yearly basis
Papers
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TL;DR: The results suggest that the ridge in pp collisions arises from the same or similar underlying physics as observed in p+Pb collisions, and that the dynamics responsible for the ridge has no strong sqrt[s] dependence.
Abstract: ATLAS has measured two-particle correlations as a function of relative azimuthal-angle, $\Delta \phi$, and pseudorapidity, $\Delta \eta$, in $\sqrt{s}$=13 and 2.76 TeV $pp$ collisions at the LHC using charged particles measured in the pseudorapidity interval $|\eta|$<2.5. The correlation functions evaluated in different intervals of measured charged-particle multiplicity show a multiplicity-dependent enhancement at $\Delta \phi \sim 0$ that extends over a wide range of $\Delta\eta$, which has been referred to as the "ridge". Per-trigger-particle yields, $Y(\Delta \phi)$, are measured over 2<$|\Delta\eta|$<5. For both collision energies, the $Y(\Delta \phi)$ distribution in all multiplicity intervals is found to be consistent with a linear combination of the per-trigger-particle yields measured in collisions with less than 20 reconstructed tracks, and a constant combinatoric contribution modulated by $\cos{(2\Delta \phi)}$. The fitted Fourier coefficient, $v_{2,2}$, exhibits factorization, suggesting that the ridge results from per-event $\cos{(2\phi)}$ modulation of the single-particle distribution with Fourier coefficients $v_2$. The $v_2$ values are presented as a function of multiplicity and transverse momentum. They are found to be approximately constant as a function of multiplicity and to have a $p_{\mathrm{T}}$ dependence similar to that measured in $p$+Pb and Pb+Pb collisions. The $v_2$ values in the 13 and 2.76 TeV data are consistent within uncertainties. These results suggest that the ridge in $pp$ collisions arises from the same or similar underlying physics as observed in $p$+Pb collisions, and that the dynamics responsible for the ridge has no strong $\sqrt{s}$ dependence.
246 citations
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TL;DR: A measurement of the proton-air cross section for particle production at the center-of-mass energy per nucleon of 57 TeV is reported, derived from the distribution of the depths of shower maxima observed with the Pierre Auger Observatory.
Abstract: We report a measurement of the proton-air cross section for particle production at the center-of-mass energy per nucleon of 57 TeV. This is derived from the distribution of the depths of shower maxima observed with the Pierre Auger Observatory: systematic uncertainties are studied in detail. Analyzing the tail of the distribution of the shower maxima, a proton-air cross section of [505 +/- 22(stat)(-36)(+28)(syst)] mb is found.
246 citations
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TL;DR: In this article, measurements of luminosity obtained using the ATLAS detector during early running of the Large Hadron Collider (LHC) at root s = 7 TeV are presented, independently determined using several detectors and multiple algorithms, each having different acceptances, systematic uncertainties and sensitivity to background.
Abstract: Measurements of luminosity obtained using the ATLAS detector during early running of the Large Hadron Collider (LHC) at root s = 7 TeV are presented. The luminosity is independently determined using several detectors and multiple algorithms, each having different acceptances, systematic uncertainties and sensitivity to background. The ratios of the luminosities obtained from these methods are monitored as a function of time and of mu, the average number of inelastic interactions per bunch crossing. Residual time- and mu-dependence between the methods is less than 2% for 0 < mu < 2.5. Absolute luminosity calibrations, performed using beam separation scans, have a common systematic uncertainty of +/- 11%, dominated by the measurement of the LHC beam currents. After calibration, the luminosities obtained from the different methods differ by at most +/- 2%. The visible cross sections measured using the beam scans are compared to predictions obtained with the PYTHIA and PHOJET event generators and the ATLAS detector simulation.
246 citations
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TL;DR: In this article, the authors presented full evolutionary calculations appropriate for the study of hydrogen-rich DA white dwarfs for a wide range of stellarmasses and for two different metallicities.
Abstract: We present full evolutionary calculations appropriate for the study of hydrogen-rich DA white dwarfs. This is
done by evolving white dwarf progenitors from the zero-age main sequence, through the core hydrogen-burning
phase, the helium-burning phase, and the thermally pulsing asymptotic giant branch phase to the white dwarf stage.
Complete evolutionary sequences are computed for a wide range of stellarmasses and for two different metallicities,
Z = 0.01, which is representative of the solar neighborhood, and Z = 0.001, which is appropriate for the study of old
stellar systems, like globular clusters. During the white dwarf cooling stage, we self-consistently compute the phase
in which nuclear reactions are still important, the diffusive evolution of the elements in the outer layers and, finally,
we also take into account all the relevant energy sources in the deep interior of the white dwarf, such as the release
of latent heat and the release of gravitational energy due to carbon–oxygen phase separation upon crystallization.
We also provide colors and magnitudes for these sequences, based on a new set of improved non-gray white dwarf
model atmospheres, which include the most up-to-date physical inputs like the Lyα quasi-molecular opacity. The
calculations are extended down to an effective temperature of 2500 K. Our calculations provide a homogeneous set
of evolutionary cooling tracks appropriate for mass and age determinations of old DA white dwarfs and for white
dwarf cosmochronology of the different Galactic populations.
245 citations
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TL;DR: In this article, the authors demonstrate that the T-J extensional rifting and magmatism between 30 and 40°S were the result of mechanical interaction between different lithospheric plates at the pre-Andean (proto-Pacific) continental margin.
245 citations
Authors
Showing all 13198 results
Name | H-index | Papers | Citations |
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David Cameron | 154 | 1586 | 126067 |
Subir Sarkar | 149 | 1542 | 144614 |
Mayda Velasco | 137 | 1309 | 87579 |
Diego F. Torres | 137 | 948 | 72180 |
Heidi Sandaker | 128 | 999 | 76517 |
Vincent Garonne | 128 | 921 | 76980 |
Farid Ould-Saada | 128 | 931 | 76394 |
Ole Røhne | 128 | 1038 | 75752 |
Peter Hansen | 128 | 1271 | 86210 |
Maria-Teresa Dova | 127 | 778 | 73558 |
Vladimir Sulin | 127 | 884 | 75329 |
Andrei Snesarev | 127 | 875 | 74907 |
James Catmore | 127 | 892 | 75086 |
Ruslan Mashinistov | 126 | 860 | 73897 |
Fernando Monticelli | 126 | 843 | 73385 |