244,656 research outputs found
Past and future detector arrays for complete event reconstruction in heavy-ion reactions
open38siopenCardella, G.; Acosta, L.; Auditore, L.; Boiano, C.; Castoldi, A.; D'Andrea, M.; De Filippo, E.; Dell' Aquila, D.; De Luca, S.; Fichera, F.; Giudice, N.; Gnoffo, B.; Grimaldi, A.; Guazzoni, C.; Lanzalone, G.; Librizzi, F.; Lombardo, I.; Maiolino, C.; Maffessanti, S.; Martorana, N. S.; Norella, S.; Pagano, A.; Pagano, E. V.; Papa, M.; Parsani, T.; Passaro, G.; Pirrone, S.; Politi, G.; Previdi, F.; Quattrocchi, L.; Rizzo, F.; Russotto, P.; Saccà, G.; Salemi, G.; Sciliberto, D.; Trifirò, A.; Trimarchi, M.; Vigilante, M.Cardella, GIUSEPPE MICHELE OSVALDO; Acosta, L.; Auditore, L.; Boiano, C.; Castoldi, Andrea; D'Andrea, M.; De Filippo, E.; Dell' Aquila, D.; De Luca, S.; Fichera, F.; Giudice, N.; Gnoffo, B.; Grimaldi, A.; Guazzoni, Chiara; Lanzalone, G.; Librizzi, F.; Lombardo, I.; Maiolino, C.; Maffessanti, Stefano; Martorana, N. S.; Norella, S.; Pagano, A.; Pagano, E. V.; Papa, M.; Parsani, Tommaso; Passaro, G.; Pirrone, S.; Politi, G.; Previdi, Fabio; Quattrocchi, L.; Rizzo, F.; Russotto, P.; Saccà, G.; Salemi, G.; Sciliberto, D.; Trifirò, A.; Trimarchi, M.; Vigilante, M
Test of GET Electronics for the CHIMERA and FARCOS multi-detectors
open30openDe Luca, S.; Acosta, L.; Auditore, L.; Boiano, C.; Cardella, G.; Castoldi, A.; D'Andrea, M.; De Filippo, E.; Dell'Aquila, D.; Fichera, F.; Gnoffo, B.; Guazzoni, C.; Lanzalone, G.; Lombardo, I.; Martorana, N. S.; Minniti, T.; Norella, S.; Pagano, A.; Pagano, E. V.; Papa, M.; Pirrone, S.; Politi, G.; Quattrocchi, L.; Rizzo, F.; Russotto, P.; Sacca', G.; Trifiro', A.; Trimarchi, M.; Verde, G.; Vigilante, M.De Luca, S.; Acosta, L.; Auditore, L.; Boiano, C.; Cardella, GIUSEPPE MICHELE OSVALDO; Castoldi, Andrea; D'Andrea, M.; De Filippo, E.; Dell'Aquila, D.; Fichera, F.; Gnoffo, B.; Guazzoni, Chiara; Lanzalone, G.; Lombardo, I.; Martorana, N. S.; Minniti, T.; Norella, S.; Pagano, A.; Pagano, E. V.; Papa, M.; Pirrone, S.; Politi, G.; Quattrocchi, L.; Rizzo, F.; Russotto, P.; Sacca', G.; Trifiro', A.; Trimarchi, M.; Verde, G.; Vigilante, M
The Bishop-Phelps-Bollob\'{a}s property for operators on
We provide a version for operators of the Bishop-Phelps-Bollob\'{a}s Theorem
when the domain space is the complex space . In fact we prove that the
pair satisfies the Bishop-Phelps-Bollob\'{a}s property for
operators for every Hausdorff locally compact space and any
-uniformly convex space. As a consequence, this holds for ().Comment: 13 page
Matching Tree-Level Matrix Elements with Interleaved Showers
We present an implementation of the so-called CKKW-L merging scheme for
combining multi-jet tree-level matrix elements with parton showers. The
implementation uses the transverse-momentum-ordered shower with interleaved
multiple interactions as implemented in PYTHIA8. We validate our procedure
using e+e--annihilation into jets and vector boson production in hadronic
collisions, with special attention to details in the algorithm which are
formally sub-leading in character, but may have visible effects in some
observables. We find substantial merging scale dependencies induced by the
enforced rapidity ordering in the default PYTHIA8 shower. If this rapidity
ordering is removed the merging scale dependence is almost negligible. We then
also find that the shower does a surprisingly good job of describing the
hardness of multi-jet events, as long as the hardest couple of jets are given
by the matrix elements. The effects of using interleaved multiple interactions
as compared to more simplistic ways of adding underlying-event effects in
vector boson production are shown to be negligible except in a few sensitive
observables. To illustrate the generality of our implementation, we also give
some example results from di-boson production and pure QCD jet production in
hadronic collisions.Comment: 44 pages, 23 figures, as published in JHEP, including all changes
recommended by the refere
Concert recording 2017-05-15
[Track 1]. Histoire du tango. I. Bordel 1900 [Track 2]. II. Café 1930 / Astor Piazzolla -- [Track 3]. Sonatine for flute and piano / Henry Dutelleux -- [Tracks 4-5]. Duo for flute and piano / Aaron Copland -- [Tracks 6-8]. Flute concerto in D minor/ C.P.E. Bach -- [Track 9]. Solo de Pajarillo / O. Acosta
Collider signatures of goldstini in gauge mediation
We investigate the collider signatures of the multiple goldstini scenario in
the framework of gauge mediation. This class of models is characterized by a
visible sector (e.g. the MSSM or any extension) coupled by gauge interactions
to more than one SUSY breaking sector. The spectrum consists of a light
gravitino LSP, behaving as a goldstino, and a number of neutral fermions (the
pseudo-goldstini) with a mass between that of the LSP and that of the lightest
particle of the observable sector (LOSP). We consider the two situations where
the LOSP is either a gaugino-like neutralino or a stau and we assume only one
pseudo-goldstino of a mass of O(100) GeV. The coupling of the LOSP to the
pseudo-goldstino can be enhanced with respect to those of the gravitino giving
rise to characteristic signatures. We show that the decay modes of the LOSP
into a SM particle and a pseudo-goldstino can be significant. For both LOSP
scenarios we analyze (pseudo)-goldstini production at colliders. Compared to
standard gauge mediation the final state spectrum is softer and more
structured.Comment: v2: analysis of the stau LOSP scenario added, sections rearranged,
and Introduction and Conclusions rewritten to include the added scenario.
Version to appear in JHE
Light gravitino production in association with gluinos at the LHC
We study the jets plus missing energy signature at the LHC in a scenario
where the gravitino is very light and the gluino is the next-to-lightest
supersymmetric particle and promptly decays into a gluon and a gravitino. We
consider both associated gravitino production with a gluino and gluino pair
production. By merging matrix elements with parton showers, we generate
inclusive signal and background samples and show how information on the gluino
and gravitino masses can be obtained by simple final state observables.Comment: 18 pages, 8 figures, 1 table; v2: typos corrected, version to appear
in JHE
Access to Universities' Public Knowledge: Who is More Regionalist?
Acosta M., Azagra-Caro J. M. and Coronado D. Access to universities' public knowledge: who is more regionalist?, Regional Studies. This paper tracks university-to-firm patent citations rather than the more usual patent-to-patent or paper-to-patent citations. It explains regional and non-regional citations as a function of firms' absorptive capacity and universities' production capacity in the region rather than explaining citations as a function of distance between citing and cited regions. Using a dataset of European Union regions for the years 1997-2007, it is found that fostering university research and development (R&D) capacity increases the attractiveness of the local university's knowledge base to firms in the region, but also reduces wider searches for university knowledge. Increasing the absorptive capacity of local business encourages firms to access university knowledge from outside the region.This research was extended with funding from Project 2091 of the Polytechnic University of Valencia, Project number 201010I004 of the CSIC and by the Junta de Andalucia [project number P08-SEJ-03981].Acosta, M.; Azagra Caro, JM.; Coronado, D. (2016). Access to Universities' Public Knowledge: Who is More Regionalist?. Regional Studies. 50(3):446-459. https://doi.org/10.1080/00343404.2014.923094S44645950
Theoretical predictions for charm and bottom production at the LHC
We present predictions for a variety of single-inclusive observables that
stem from the production of charm and bottom quark pairs at the 7 TeV LHC. They
are obtained within the FONLL semi-analytical framework, and with two "Monte
Carlo + NLO" approaches, MC@NLO and POWHEG. Results are given for final states
and acceptance cuts that are as close as possible to those used by experimental
collaborations and, where feasible, are compared to LHC data.Comment: 22 pages, 10 figure
Observation of Scaling Violations in Scaled Momentum Distributions at HERA
Charged particle production has been measured in deep inelastic scattering
(DIS) events over a large range of and using the ZEUS detector. The
evolution of the scaled momentum, , with in the range 10 to 1280
, has been investigated in the current fragmentation region of the Breit
frame. The results show clear evidence, in a single experiment, for scaling
violations in scaled momenta as a function of .Comment: 21 pages including 4 figures, to be published in Physics Letters B.
Two references adde
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