2013-06-11
16:01 |
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2013-06-11
14:37 |
Evaluation of x32-ABI in the Context of LHC Applications
/ Rauschmayr, N (CERN, Switzerland) ; Streit, A (Steinbuch Centre for Computing, Karlsruhe Institute of Technology, Germany)
The application binary interface x32 (x32-ABI) was introduced in Linux kernel 3.4 and is based on the x64 instruction set. Instead of 64-bit it uses 32-bit as size for pointers and C-data type long, reducing consequently memory overhead. [...]
LHCb-PROC-2013-033; CERN-LHCb-PROC-2013-033.-
Geneva : CERN, 2013 - 8 p.
Fulltext: PDF;
In : International Conference on Computational Science 2013 "Computation at the Frontiers of Science", Barcelona, Spain, 5 - 7 Jun 2013
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2013-06-04
11:03 |
LHCb Semileptonic Asymmetry
/ Vesterinen, M (CERN, Switzerland)
A recent LHCb measurement of the $CP$ violating flavour specific asymmetry in $B^0_s$ decays, $a^s_{sl}$ is presented. This measurement is based on a data sample corresponding to an intergrated luminosity of 1 fb$^{-1}$ of $pp$ collisions at $\sqrt{s}$ = 7 TeV, sollected durint the 2011 run of the LHC. [...]
LHCb-PROC-2013-032; CERN-LHCb-PROC-2013-032.-
Geneva : CERN, 2013 - 6 p.
Fulltext: PDF;
In : 14th International Conference on B-Physics at Hadron Machines, Bologna, Italy, 8 - 12 Apr 2013
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2013-05-27
16:01 |
Studies of the soft QCD at LHCb
/ Contu, Andrea (Sezione INFN di Cagliari, Italy)
This paper summarises two analyses of minimum bias data collected with the LHCb detector from $pp$ collisions at the LHC. The geometry, tracking and particle identification system of the LHCb experiment provide unique capabilities for this type of study in a kinematic region where QCD models have large uncertainties. [...]
LHCb-PROC-2013-031; CERN-LHCb-PROC-2013-031.-
Geneva : CERN, 2013 - 5 p.
Fulltext: PDF;
In : Hadron Collider Physics Symposium 2012, Kyoto, Japan, 12 - 16 Nov 2012
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2013-05-23
16:14 |
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2013-05-23
15:58 |
Future wishes and constraints from the experiments at the LHC for the proton-proton program
/ Jacobsson, R (CERN, Switzerland)
Hosting six different experiments at four different interaction points and widely different requirements for the running conditions, the LHC machine has been faced with a long list of challenges in the first three years of luminosity production 2010 – 2012 (Run 1), many of which were potentially capable of limiting the performance due to instabilities resulting from the extremely high bunch brightness. Nonetheless, LHC met the challenges and performed extremely well at high efficiency and routinely with beam brightness at twice the design, well over 1/3 of the time in collision for physics, average luminosity lifetimes in excess of 10h, and extremely good background conditions in the experiments. [...]
LHCb-PROC-2013-029; CERN-LHCb-PROC-2013-029.-
Geneva : CERN, 2013 - 10 p.
Fulltext: PDF;
In : ICFA Mini-Workshop on Beam-Beam Effects in Hadron Colliders (BB2013), Cern, Switzerland, 18 - 22 Mar 2013
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2013-05-21
16:10 |
CP Violation in the $B^0_s$ system in LHCb
/ Benson, S (University of Edinburgh, UK)
Latest LHCb measurements of $CP$ violation in the interference between mixing and decay are presented based on $pp$ collision data collected in 2011 at centre-of-mass energy $\sqrt{s}$ = 7TeV, corresponding to an integrated luminosity of 1.0fb$^{-1}$. A combination of about $27.6k$ $B_s^0\to J/\psi \phi$ and $7.4k$ $B_s^0\to J/\psi \pi\pi$ signal events yield the most accurate measurement of the $CP$-violating phase, $\phi_s^{c\overline{c}s}$. [...]
LHCb-PROC-2013-028; CERN-LHCb-PROC-2013-028.-
Geneva : CERN, 2013 - 6 p.
Fulltext: PDF;
In : 48th Rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile, Italy, 2 - 9 Mar 2013
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2013-05-21
14:21 |
Rare decays at LHCb
/ Polci, Francesco (CNRS/IN2P3, Paris, France)
The results on rare decay processes obtained by the LHCb experiment using 1.0 $fb^{-1}$ of $pp$ collisions collected in 2011 at a centre-of-mass energy of $\sqrt{s} = 7 TeV$ are presented. Branching fractions, angular distinctions, CP and isospin asymmetries are investigated to search for new physics effects..
LHCb-PROC-2013-027; CERN-LHCb-PROC-2013-027.-
Geneva : CERN, 2013 - 4 p.
Fulltext: PDF;
In : Workshop on high energy physics in the near future, Rio De Janeiro, Brazil, 17 - 24 Mar 2013
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2013-05-17
16:13 |
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2013-05-16
17:09 |
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