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Towards a global monitoring system for CMS computing operations

L A T Bauerdick, A Sciabà
<span title="2012-12-13">2012</span> <i title="IOP Publishing"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/wxgp7pobnrfetfizidmpebi4qy" style="color: black;">Journal of Physics, Conference Series</a> </i> &nbsp;
This contribution gives a complete overview of the CMS monitoring system and a description of all the recent activities that have been started with the goal of providing a more integrated, modern and functional  ...  This contribution gives a complete overview of the CMS monitoring system and a description of all the recent activities that have been started with the goal of providing a more integrated, modern and functional  ...  A second step would be to add the possibility of showing correlations between different quantities, but a study to choose a technology for cross correlation of heterogeneous data sources has yet to be  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1088/1742-6596/396/3/032099">doi:10.1088/1742-6596/396/3/032099</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/yu3vqsisdnezjbuechp5geo67u">fatcat:yu3vqsisdnezjbuechp5geo67u</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20180726174909/http://cds.cern.ch/record/1457470/files/CR2012_076.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/21/54/21541d1bd81d66cfa4314c5fc05c2c07b5ade1d3.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1088/1742-6596/396/3/032099"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> iop.org </button> </a>

Multiple-view, Multiple-selection Visualization of Simulation Geometry in CMS

L A T Bauerdick, G Eulisse, C Jones, D Kovalskyi, T McCauley, A Mrak Tadel, I Osborne, M Tadel, A Yagil
<span title="2012-12-13">2012</span> <i title="IOP Publishing"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/wxgp7pobnrfetfizidmpebi4qy" style="color: black;">Journal of Physics, Conference Series</a> </i> &nbsp;
Node-selection by proximity to a given point is possible. A visual clipping box can be set for each geometry view to limit geometry drawing into a specified region.  ...  Further operations, like opening of a new view or changing of the root node, can be performed via a context menu.  ...  It is obvious that displaying a couple million volumes to a user only serves to overwhelm him and has a fair chance of exhausting the system resources.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1088/1742-6596/396/2/022052">doi:10.1088/1742-6596/396/2/022052</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/hgyjzc4nsjh4xg4rpbwxutuagm">fatcat:hgyjzc4nsjh4xg4rpbwxutuagm</a> </span>
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Xrootd Monitoring for the CMS Experiment

L A T Bauerdick, K Bloom, B Bockelman, D C Bradley, S Dasu, I Sfiligoi, A Tadel, M Tadel, F Wuerthwein, A Yagil
<span title="2012-12-13">2012</span> <i title="IOP Publishing"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/wxgp7pobnrfetfizidmpebi4qy" style="color: black;">Journal of Physics, Conference Series</a> </i> &nbsp;
A custom application was developed to process this information. It currently provides a real-time view of the system usage and can store data into ROOT files for detailed analysis.  ...  The second level uses Xrootd's "summary data" stream; this data is aggregated from all sites and fed into a MonALISA service providing visualization and storage.  ...  When a message that a file has been closed is received (or a file closed due to an error condition or time-out), a detailed file-read report is generated.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1088/1742-6596/396/4/042058">doi:10.1088/1742-6596/396/4/042058</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/o5d56vmu4vd3bjxgbjw5o5xfii">fatcat:o5d56vmu4vd3bjxgbjw5o5xfii</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20170211235955/http://lss.fnal.gov/archive/2012/conf/fermilab-conf-12-832-cd.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/62/16/6216b837409033e07e0e1dcdf933fd8abf760d35.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1088/1742-6596/396/4/042058"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> iop.org </button> </a>

Planning the Future of U.S. Particle Physics (Snowmass 2013): Chapter 9: Computing [article]

L. A. T. Bauerdick, S. Gottlieb, G. Bell, K. Bloom, T. Blum, D. Brown, M. Butler, A. Connolly, E. Cormier, P. Elmer, M. Ernst, I. Fisk, G. Fuller, R. Gerber (+16 others)
<span title="2014-01-23">2014</span> <i > arXiv </i> &nbsp; <span class="release-stage" >pre-print</span>
A typical lattice-QCD analysis campaign involves a mix of problem sizes.  ...  There is a large number of experiments, a range of scales in data output and throughput, and a range in the number of experimenters.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener" href="https://arxiv.org/abs/1401.6117v1">arXiv:1401.6117v1</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/czmytmguqvcnrdm4q2ycjco4zm">fatcat:czmytmguqvcnrdm4q2ycjco4zm</a> </span>
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Planning the Future of U.S. Particle Physics (Snowmass 2013): Chapter 1: Summary [article]

J. L. Rosner, M. Bardeen, W. Barletta, L. A. T. Bauerdick, R. H. Bernstein, R. Brock, D. Cronin-Hennessy, M. Demarteau, M. Dine, J. L. Feng, M. Gilchriese, S. Gottlieb, N. Graf (+12 others)
<span title="2014-01-23">2014</span> <i > arXiv </i> &nbsp; <span class="release-stage" >pre-print</span>
Collider searches for hidden-sector particles can be performed via the reaction e + e − → γ + − at high luminosity e + e − factories or in the decays of gauge bosons at the LHC.  ...  The strongest demands on precision in the top quark mass come from the precision electroweak program, where interpretation of a 5 MeV error in m W requires a 500 MeV error on m t .  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener" href="https://arxiv.org/abs/1401.6075v1">arXiv:1401.6075v1</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/6rzkc3ppsjgyfhkqljgh2bix3y">fatcat:6rzkc3ppsjgyfhkqljgh2bix3y</a> </span>
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XRootd, disk-based, caching proxy for optimization of data access, data placement and data replication

L A T Bauerdick, K Bloom, B Bockelman, D C Bradley, S Dasu, J M Dost, I Sfiligoi, A Tadel, M Tadel, F Wuerthwein, A Yagil
<span title="2014-06-11">2014</span> <i title="IOP Publishing"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/wxgp7pobnrfetfizidmpebi4qy" style="color: black;">Journal of Physics, Conference Series</a> </i> &nbsp;
The first one simply starts fetching a whole file as soon as a file-open request is received and is suitable when completely random file access is expected or it is already known that a whole file be read  ...  The first one simply starts fetching a whole file as soon as a file-open request is received and is suitable when completely random file access is expected or it is already known that a whole file be read  ...  Proxy contacts a redirector to find a replica of the file on some other site. 4. Proxy downloads data, serves it to local clients and stores a copy to disk. 5.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1088/1742-6596/513/4/042044">doi:10.1088/1742-6596/513/4/042044</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/zfdqrgib2fdfbjjtghudvkbkju">fatcat:zfdqrgib2fdfbjjtghudvkbkju</a> </span>
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CMS computing operations during run 1

J Adelman, S Alderweireldt, J Artieda, G Bagliesi, D Ballesteros, S Bansal, L Bauerdick, W Behrenhof, S Belforte, K Bloom, B Blumenfeld, S Blyweert (+59 others)
<span title="2014-06-11">2014</span> <i title="IOP Publishing"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/wxgp7pobnrfetfizidmpebi4qy" style="color: black;">Journal of Physics, Conference Series</a> </i> &nbsp;
The output of the simulation of a specific physics process is consolidated at a Tier-1 site where it is stored on tape.  ...  A problem at a site can have significant implications, even more when CMS moves to more dynamic and automated systems.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1088/1742-6596/513/3/032040">doi:10.1088/1742-6596/513/3/032040</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/2pl7f2lfx5g5fopbdjv2ak2zpm">fatcat:2pl7f2lfx5g5fopbdjv2ak2zpm</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20170222074849/http://lss.fnal.gov/archive/2013/conf/fermilab-conf-13-492-cd.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/b9/70/b9701e8006bece0e7acb15f2f3a6345e196eeaec.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1088/1742-6596/513/3/032040"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="unlock alternate icon" style="background-color: #fb971f;"></i> iop.org </button> </a>

The CMS data transfer test environment in preparation for LHC data taking

G. Bagliesi, L. Bauerdick, S. Belforte, K. Bloom, B. Bockelman, D. Bonacorsi, C. Brew, J. D'Hondt, R. Egeland, S. Elgammal, F. Fassi, I. Fisk (+24 others)
<span title="">2008</span> <i title="IEEE"> 2008 IEEE Nuclear Science Symposium Conference Record </i> &nbsp;
Such procedure aimed to move a link from a debugging phase in a separate and independent environment to a production environment when a set of agreed conditions are achieved for that link.  ...  In distributed data transfer tests, in early 2007 a traffic load generator infrastructure was designed and deployed, to equip the WLCG Tiers which support the CMS Virtual Organization with a means for  ...  INTRODUCTION T HE CMS Experiment [1] is one of 4 large particle physics experiments at the LHC accelerator at CERN, Geneva, Switzerland that is presently being commissioned to resume data taking in 2009  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1109/nssmic.2008.4775085">doi:10.1109/nssmic.2008.4775085</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/bstgwetr4reyfannfzueqopms4">fatcat:bstgwetr4reyfannfzueqopms4</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20170705055852/http://bitem.hesge.ch/sites/default/files/biblio/GBNSSMIC2008.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/14/52/1452624c048c49cee71670689441095b7b849b23.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1109/nssmic.2008.4775085"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> ieee.com </button> </a>

Inclusive charged particle distributions in deep inelastic scattering events at HERA

M. Derrick, D. Krakauer, S. Magill, D. Mikunas, B. Musgrave, J. Repond, R. Stanek, R. L. Talaga, H. Zhang, G. Bari, M. Basile, L. Bellagamba (+442 others)
<span title="">1996</span> <i title="Springer Nature America, Inc"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/b7qut72chna6lnnts2qfrqqwai" style="color: black;">Zeitschrift für Physik C Particles and Fields</a> </i> &nbsp;
The differential charged particle rates in the γ^* p centre-of-mass system as a function of the scaled longitudinal momentum, x_F, and of the transverse momentum, p_t^* and , as a function of x_F, W and  ...  Separate distributions are shown for events with (LRG) and without (NRG) a rapidity gap with respect to the proton direction.  ...  The variables x F and p * t describe the kinematics of the hadrons in the γ * p cms: x F = p * l /|p * l,max | = 2p * l /W , (3) where p * l is the projection of the hadron momentum vector onto the direction  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1007/s002880050075">doi:10.1007/s002880050075</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/rq5vbmp52jd33csc5zxir2fh3m">fatcat:rq5vbmp52jd33csc5zxir2fh3m</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20180722172542/https://pure.uva.nl/ws/files/1717739/1919_20845y.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/7c/8c/7c8cc6c4f51c46fd5a5706d15625325e51c0dc6c.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1007/s002880050075"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> springer.com </button> </a>

Inclusive transverse momentum distributions of charged particles in diffractive and non-diffractive photoproduction at HERA

M. Derrick, D. Krakauer, S. Magill, D. Mikunas, B. Musgrave, J. Repond, R. Stanek, R. L. Talaga, H. Zhang, R. Ayad, G. Bari, M. Basile (+439 others)
<span title="">1995</span> <i title="Springer Nature America, Inc"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/b7qut72chna6lnnts2qfrqqwai" style="color: black;">Zeitschrift für Physik C Particles and Fields</a> </i> &nbsp;
The data are also compared to the results of a next--to--leading order QCD calculation.  ...  The non--diffractive data show a pronounced high p_T tail departing from the exponential shape.  ...  The non{diractive l o w p T slope is consistent with the result from p p at a similar c.m. energy but displays a high p T tail clearly departing from the exponential shape.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1007/bf01571283">doi:10.1007/bf01571283</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/vux7sq6g3fcv7gkmbvzjr6uqfe">fatcat:vux7sq6g3fcv7gkmbvzjr6uqfe</a> </span>
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Measurement of the diffractive structure function in deep inelastic scattering at HERA

M. Derrick, D. Krakauer, S. Magill, D. Mikunas, B. Musgrave, J. Repond, R. Stanek, R. L. Talaga, H. Zhang, R. Ayad, G. Bari, M. Basile (+442 others)
<span title="">1995</span> <i title="Springer Nature"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/b7qut72chna6lnnts2qfrqqwai" style="color: black;">Zeitschrift für Physik C Particles and Fields</a> </i> &nbsp;
The data are consistent with models where the pomeron structure function has a hard and a soft contribution.  ...  The events are characterised by a rapidity gap between the outgoing proton system and the remaining hadronic system.  ...  We w ould like to thank A. Donnachie, L. Frankfurt, G. Ingelman and N. Nikolaev for valuable discussions.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1007/bf01565257">doi:10.1007/bf01565257</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/kunp55funzgqtokwsw7ckgaczm">fatcat:kunp55funzgqtokwsw7ckgaczm</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20181030062453/http://cds.cern.ch/record/281952/files/9505010.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/b8/fc/b8fc11e77b00b76a674db6eeba06fca6c6fd5423.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1007/bf01565257"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> springer.com </button> </a>

Neutral strange particle production in deep inelastic scattering at HERA

M. Derick, D. Krakauer, S. Magill, D. Mikunas, B. Musgrave, J. Repond, R. Stanek, R. L. Talaga, H. Zhang, R. Ayad, G. Bari, M. Basile (+438 others)
<span title="">1995</span> <i title="Springer Nature America, Inc"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/b7qut72chna6lnnts2qfrqqwai" style="color: black;">Zeitschrift für Physik C Particles and Fields</a> </i> &nbsp;
The production properties of '̨s in events with and without a large rapidity gap with respect to the proton direction are compared.  ...  The multiplicities favour a stronger strange to light quark suppression in the fragmentation chain than found in e^+ e^- experiments.  ...  A function of the form C 1 /p T · exp (C 2 p T ) fits well the measured 1/N ev · dN (K 0 )/dp 2 T distribution as a function of p T over the p T range shown in Fig. 3 . C 1 and C 2 are constants.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1007/bf01579802">doi:10.1007/bf01579802</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/u62w4ulsozffpn5ydcp5jzcnf4">fatcat:u62w4ulsozffpn5ydcp5jzcnf4</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20171009121426/https://core.ac.uk/download/pdf/2448131.pdf" title="fulltext PDF download [not primary version]" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <span style="color: #f43e3e;">&#10033;</span> <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/97/25/97253efb7aa32431edac78c4236edc200b7b7934.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1007/bf01579802"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> springer.com </button> </a>

Measurement of the proton structure functionF 2 at lowx and lowQ 2 at HERA

M. Derrick, D. Krakauer, S. Magill, D. Mikunas, B. Musgrave, J. Repond, R. Stanek, R. L. Talaga, H. Zhang, G. Bari, M. Basile, L. Bellagamba (+448 others)
<span title="">1995</span> <i title="Springer Nature America, Inc"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/b7qut72chna6lnnts2qfrqqwai" style="color: black;">Zeitschrift für Physik C Particles and Fields</a> </i> &nbsp;
.; Kruse, A.; Tiecke, H.G.J.M.; Verkerke, W.; Vreeswijk, M.; Wiggers, L.W.; de Wolf, E.; van Woudenberg, R. Link to publication Citation for published version (APA): Derrick(et al.), M., Botje, M. A.  ...  and σ L respectively, by σ γ * p tot ≡ σ T (x, Q 2 ) + σ L (x, Q 2 ).  ...  The expression for F 2 in terms of σ T and σ L is F 2 (x, Q 2 ) = Q 2 (1 − x) 4π 2 α Q 2 Q 2 + 4m 2 p x 2 ×[σ T (x, Q 2 ) + σ L (x, Q 2 )], (10) where m p is the mass of the proton.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1007/bf02907444">doi:10.1007/bf02907444</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/kpfqumilcne4ziyfyv6gmgoym4">fatcat:kpfqumilcne4ziyfyv6gmgoym4</a> </span>
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Jet production in highQ 2 deep-inelastic ep scattering at HERA

M. Derrick, D. Krakauer, S. Magill, D. Mikunas, B. Musgrave, J. Repond, R. Stanek, R. L. Talaga, H. Zhang, R. Avad, G. Bari, M. Basile (+440 others)
<span title="">1995</span> <i title="Springer Nature"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/b7qut72chna6lnnts2qfrqqwai" style="color: black;">Zeitschrift für Physik C Particles and Fields</a> </i> &nbsp;
We w ould like to thank T. Brodkorb, D. Graudenz and E. Mirkes for valuable discussions and for providing the NLO calculations.  ...  A t l o w er y cut values (y cut ' 0:02) the resolution on y ij is approximately 0.01.  ...  At l o w P T , h o w ever, the data lie above the Monte Carlo prediction. Partonic scaling variables The distribution of z versus x p for the uncorrected data is presented in Fig. 7 .  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1007/bf01564823">doi:10.1007/bf01564823</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/edehc7zgvrgynjqqrm5aozruke">fatcat:edehc7zgvrgynjqqrm5aozruke</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20180728214747/http://cds.cern.ch/record/276534/files/9502003.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/1a/ec/1aecec68d0d3951cbd1c8d5b9d6a025881c5af4d.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1007/bf01564823"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> springer.com </button> </a>

Measurement of the diffractive structure functionF 2 D(4) at HERA

J. Breitweg, M. Derrick, D. Krakauer, S. Magill, D. Mikunas, B. Musgrave, J. Repond, R. Stanek, R. L. Talaga, R. Yoshida, H. Zhang, M. C. K. Mattingly (+411 others)
<span title="">1998</span> <i title="Springer Nature"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/pkristlbcjejngw5nuiceaedmu" style="color: black;">European Physical Journal C: Particles and Fields</a> </i> &nbsp;
The events are selected by requiring a scattered proton in the ZEUS leading proton spectrometer (LPS) with x L > 0.97, where x L is the fraction of the incoming proton beam momentum carried by the scattered  ...  The use of the LPS significantly reduces the contamination from events with diffractive dissociation of the proton into low mass states and allows a direct measurement of t, the square of the four-momentum  ...  It is also a pleasure to thank N.N. Nikolaev and M.G. Ryskin for useful discussions.  ... 
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