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Integrating network and transfer metrics to optimize transfer efficiency and experiment workflows
2015
Journal of Physics, Conference Series
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The Worldwide LHC Computing Grid relies on the network as a critical part of its infrastructure and therefore needs to guarantee effective network usage and prompt detection and resolution of any network issues, including connection failures, congestion, traffic routing, etc. The WLCG Network and Transfer Metrics project aims to integrate and combine all network-related monitoring data collected by the WLCG infrastructure. This includes FTS monitoring information, monitoring data from the
doi:10.1088/1742-6596/664/5/052003
fatcat:fuegrox22bh25gbizuihcffavm
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... federation, as well as results of the perfSONAR tests. The main challenge consists of further integrating and analyzing this information in order to allow the optimizing of data transfers and workload management systems of the LHC experiments. In this contribution, we present our activity in commissioning WLCG perfSONAR network and integrating network and transfer metrics: We motivate the need for the network performance monitoring, describe the main use cases of the LHC experiments as well as status and evolution in the areas of configuration and capacity management, datastore and analytics, including integration of transfer and network metrics and operations and support.
Constraints on anomalous quartic gauge boson couplings fromνν¯γγandqq¯γγevents at CERN LEP2
2004
Physical Review D
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Physics, University of Illinois at Urbana-
i
j
l
m
zerland.
p Now at IEKP Universität Karlsruhe, Germany. ...
doi:10.1103/physrevd.70.032005
fatcat:shg33l76gnc5vfzwbwitvxsk44
Page 372 of European Journal of Clinical Investigation Vol. 22, Issue 5
[page]
1992
European Journal of Clinical Investigation
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The Internet Archive has digitized a microfilm copy of this work. It may be possible to borrow a copy for reading.
J. Taylor, B. Rajagopalan and G. K. Radda
Bone mass of spine and forearm in osteoporosis
and in German normals: influence of sex, age and anthropometric parameters: C. Wiister,
G. Duckeck, A. ...
J. Zijlstra, J. E. Vincent, W. M. Mol,
H. C. Hoogsteden, P. Th. W. Van Hal and
R. C. Jongejan
Affinity of anti-HBs antibody after hepatitis B vaccination: M. Radkowski, T. Laskus, A. Goch and J. ...
Determination of α S using OPAL hadronic event shapes at $\sqrt{s} = 91\mbox{--}209~\mathrm{GeV}$ and resummed NNLO calculations
2011
European Physical Journal C: Particles and Fields
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A χ 2 value is calculated at each c.m. energy: χ 2 = n i,j P i − t i (α S ) V −1 ij P j − t j (α S ) (3) where i, j include the bins within the fit range of the event shape distribution, P i is the measured ...
N k N k = 1 N 4 k α 2 k N k (N δ ik − N i )(N δ jk − N j ), (4) where δ ik is the Kronecker delta function, and the other terms are defined in Sect. 5.2. ...
doi:10.1140/epjc/s10052-011-1733-z
fatcat:hvfega2stfec5kefoijkn2zmpe
Σ−-antihyperon correlations in Z0 decay and investigation of the baryon production mechanism
2009
European Physical Journal C: Particles and Fields
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Becattini for applying the thermodynamic model to the − antihyperon correlations and we thank J. Lamsa and K. ...
(j ). ...
N data N MC · D (MC,like) i,k (j, d 0 ); (5) D unlike (j, d 0 ) − D like (j, d 0 ) = i,k η (a) i,k · N data N MC · D (MC,unlike) i,k (j, d 0 ) − D (MC,like) i,k (j, d 0 ) . (6) The (5) and (6) . ...
doi:10.1140/epjc/s10052-009-1175-z
fatcat:pf36ma6aincpxph6o4s7tazf7m
Search for charged Higgs bosons in e+e− collisions at $\sqrt{s}=189\mbox{--}209\ \mbox{GeV}$
2012
European Physical Journal C: Particles and Fields
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-jet, where j = i + 1. ...
Both the fermionic (2τ , 2j + τ and 4j) and the bosonic (4j + τ , 6j + and 8j) final states play an important role and therefore their results have to be combined. ...
doi:10.1140/epjc/s10052-012-2076-0
pmid:25814843
pmcid:PMC4371074
fatcat:vd2hngdxcbdfje7heuly5oxkei
Measurement of the photon structure functionF 2 ? in the reactione + e ??e + e ?+hadrons at LEP
1994
Zeitschrift für Physik C Particles and Fields
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< 6 GeV (in tag plane) j cos #j < 0:97
p T > 0:1GeV
Electromagnetic E raw > 0:17 GeV
Cluster
Cluster is not associated with a track
Quality
(association half-angle = 0 : 1 rad)
Track
3 c harged ...
Following [2, 3] , we consider two VMD models, with dierent angular distributions of the quark-antiquark axis in the two-photon centre-of- jp T vis out j < 4 GeV (out of tag plane) Hadronic mass 2:5 GeV ...
doi:10.1007/bf01413097
fatcat:7ll4forohbahzbb6mqutgix7gm
Measurement of $$\Gamma ({\rm Z}^0 \to b\bar b)/\Gamma ({\rm Z}^0 \to hadrons)$$ using leptons
1993
Zeitschrift für Physik C Particles and Fields
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J= !`Branching Ratio Combining the measured branching ratios for B 0 ; B + ! J= and J= !`+` decays [31] gives for +
The c ! ...
The matching requirement, pos < 3, removes roughly 20% of prompt muons passing the p, p t and j cos j cuts. ...
doi:10.1007/bf01553012
fatcat:exkpz4duv5a7fecrhqsiq5qxa4
Measurement of the τ lifetime
1993
Zeitschrift für Physik C Particles and Fields
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sin j. ...
The electromagnetic calorimeter system provides coverage over nearly the full solid angle, for j cos j 0 : 98. ...
doi:10.1007/bf01566683
fatcat:sa6vyixps5bibpknggasvy6vmy
Precision measurements of the neutral current from hadron and lepton production at LEP
1993
Zeitschrift für Physik C Particles and Fields
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Events were required to lie within the angular range j cos j < 0:70, j cos j < 0:95 and j cos j < 0:90 for the e + e , + and + channels, respectively. ...
180 j < 20 , where = j R L j; E L + E R > (2=3) p s; E L;R > 0:225 p s. ...
doi:10.1007/bf01560340
fatcat:7ex2ubsdrfbdbigtszbqj4awaa
A study of differences between quark and gluon jets using vertex tagging of quark jets
1993
Zeitschrift für Physik C Particles and Fields
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of 7.5 cm with a coverage of j cos j < 0:77. ...
cos j < 0:92. ...
doi:10.1007/bf01557696
fatcat:t4t6pf2g4vfvfaqzjzrnc7kd2e
A determination of? s( $$M_{Z^0 } $$ ) at LEP using resummed QCD calculations
1993
Zeitschrift für Physik C Particles and Fields
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j in the data. ...
A jet resolution variable y ij is dened for each pair of particles i and j by: y ij = 2 min(E 2 i ; E 2 j )(1 cos ij ) E 2 vis ; (5) where E i and E j are the energies of the two particles or jets i and ...
doi:10.1007/bf01555834
fatcat:smpevxkisrcevmjhje7tdgk5zy
QCD coherence studies using two particle azimuthal correlations
1993
Zeitschrift für Physik C Particles and Fields
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We calculate the TPAC (see formula (4) ) in the two i n tervals 0 < j 1 j < 1 and 1 < j 1 j < 2 , with 0 < j 12 j < 1 . ...
= 1 cos i j ( i j is the angle between partons i and j). ...
doi:10.1007/bf01560339
fatcat:4gple2s33fhxvnkc62pxszg2ii
Inclusive neutral vector meson production in hadronicZ 0 decays
1992
Zeitschrift für Physik C Particles and Fields
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The neutral (770) 0 , K (892) 0 and (1020) vector meson states have spin-parity J P C = 1 , are in the same nonet of SU(3) F and have similar masses. ...
Subsequently only well measured tracks of momentum above 0.25 GeV/c, with j cosj < 0:72 and with associated z-chamber hits, were used in making the mass spectra. ...
doi:10.1007/bf01474724
fatcat:singnimiifh4tlwwfmno6dhepu
Improved measurements of the neutral current from hadron and lepton production at LEP
1994
Zeitschrift für Physik C Particles and Fields
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Events were required to lie within the angular ranges j cosj < 0:70, j cos j < 0:95 and j cos j < 0:90 for the e + e , + and + channels, respectively. ...
e + e , within j cosj < 0:70; b) e + e ! + , within j cosj < 0:95; c) e + e ! ...
doi:10.1007/bf01641883
fatcat:tnwosgisqjakxphpwszrptat2a
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