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Title: A study of the energy dependence of the underlying event in proton-antiproton collisions

Abstract

We study charged particle production (pT > 0.5 GeV/c, |η| < 0.8) in proton-antiproton collisions at 300 GeV, 900 GeV, and 1.96 TeV. We use the direction of the charged particle with the largest transverse momentum in each event to define three regions of η-Φspace; “toward”, “away”, and “transverse”. Furthermore, the average number and the average scalar pT sum of charged particles in the transverse region are sensitive to the modeling of the “underlying event”. The transverse region is divided into a MAX and MIN transverse region, which helps separate the “hard component” (initial and final-state radiation) from the “beam-beam remnant” and multiple parton interaction components of the scattering. We found that the center-of-mass energy dependence of the various components of the event are studied in detail. The data presented here can be used to constrain and improve QCD Monte Carlo models, resulting in more precise predictions at the LHC energies of 13 and 14 TeV.

Authors:
 [1]
  1. Univ. of Helsinki, Helsinki (Finland). et al.
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Argonne National Lab. (ANL), Argonne, IL (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Org.:
CDF Collaboration
OSTI Identifier:
1221350
Alternate Identifier(s):
OSTI ID: 1227043; OSTI ID: 1454442
Report Number(s):
FERMILAB-PUB-15-361-E
Journal ID: ISSN 1550-7998; PRVDAQ; arXiv eprint number arXiv:1508.05340; TRN: US1600882
Grant/Contract Number:  
AC02-07CH11359; AC02-06CH11357; AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review. D, Particles, Fields, Gravitation and Cosmology
Additional Journal Information:
Journal Volume: 92; Journal Issue: 09; Journal ID: ISSN 1550-7998
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Aaltonen, T. A study of the energy dependence of the underlying event in proton-antiproton collisions. United States: N. p., 2015. Web. doi:10.1103/PhysRevD.92.092009.
Aaltonen, T. A study of the energy dependence of the underlying event in proton-antiproton collisions. United States. doi:10.1103/PhysRevD.92.092009.
Aaltonen, T. Mon . "A study of the energy dependence of the underlying event in proton-antiproton collisions". United States. doi:10.1103/PhysRevD.92.092009. https://www.osti.gov/servlets/purl/1221350.
@article{osti_1221350,
title = {A study of the energy dependence of the underlying event in proton-antiproton collisions},
author = {Aaltonen, T.},
abstractNote = {We study charged particle production (pT > 0.5 GeV/c, |η| < 0.8) in proton-antiproton collisions at 300 GeV, 900 GeV, and 1.96 TeV. We use the direction of the charged particle with the largest transverse momentum in each event to define three regions of η-Φspace; “toward”, “away”, and “transverse”. Furthermore, the average number and the average scalar pT sum of charged particles in the transverse region are sensitive to the modeling of the “underlying event”. The transverse region is divided into a MAX and MIN transverse region, which helps separate the “hard component” (initial and final-state radiation) from the “beam-beam remnant” and multiple parton interaction components of the scattering. We found that the center-of-mass energy dependence of the various components of the event are studied in detail. The data presented here can be used to constrain and improve QCD Monte Carlo models, resulting in more precise predictions at the LHC energies of 13 and 14 TeV.},
doi = {10.1103/PhysRevD.92.092009},
journal = {Physical Review. D, Particles, Fields, Gravitation and Cosmology},
number = 09,
volume = 92,
place = {United States},
year = {2015},
month = {11}
}

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font-size:0.75rem;"><br/> <span class="type">journal</span>, <span class="date" data-date="2001-04-01">April 2001</span></small> </h2> <ul class="small references-list" style="list-style-type:none; margin-top: 0.5em; padding-left: 0; line-height:1.8em;"> <li> <span style="color:#5C7B2D;"> Sjöstrand, Torbjörn; Edén, Patrik; Friberg, Christer</span> </li> <li> Computer Physics Communications, Vol. 135, Issue 2</li> <li> <span class="text-muted related-url">DOI: <a href="https://doi.org/10.1016/S0010-4655(00)00236-8" class="text-muted" target="_blank" rel="noopener noreferrer">10.1016/S0010-4655(00)00236-8<span class="fa fa-external-link" aria-hidden="true"></span></a></span> </li> </ul> <hr/> </div> <div> <h2 class="title" style="margin-bottom:0;" data-apporder=""> <a href="https://doi.org/10.1103/PhysRevD.57.5787" target="_blank" rel="noopener noreferrer" class="name">Hard underlying event correction to inclusive jet cross sections<span class="fa fa-external-link" aria-hidden="true"></span></a> <small class="text-muted" style="text-transform:uppercase; font-size:0.75rem;"><br/> <span class="type">journal</span>, <span class="date" data-date="1998-05-01">May 1998</span></small> </h2> <ul class="small references-list" style="list-style-type:none; margin-top: 0.5em; padding-left: 0; line-height:1.8em;"> <li> <span style="color:#5C7B2D;"> Pumplin, Jon</span> </li> <li> Physical Review D, Vol. 57, Issue 9</li> <li> <span class="text-muted related-url">DOI: <a href="https://doi.org/10.1103/PhysRevD.57.5787" class="text-muted" target="_blank" rel="noopener noreferrer">10.1103/PhysRevD.57.5787<span class="fa fa-external-link" aria-hidden="true"></span></a></span> </li> </ul> <hr/> </div> <div> <h2 class="title" style="margin-bottom:0;" data-apporder=""> <a href="https://doi.org/10.1103/PhysRevD.65.092002" target="_blank" rel="noopener noreferrer" class="name">Charged jet evolution and the underlying event in proton-antiproton collisions at 1.8 TeV<span class="fa fa-external-link" aria-hidden="true"></span></a> <small class="text-muted" style="text-transform:uppercase; font-size:0.75rem;"><br/> <span class="type">journal</span>, <span class="date" data-date="2002-04-01">April 2002</span></small> </h2> <ul class="small references-list" style="list-style-type:none; margin-top: 0.5em; padding-left: 0; line-height:1.8em;"> <li> <span style="color:#5C7B2D;"> Affolder, T.; Akimoto, H.; Akopian, A.</span> </li> <li> Physical Review D, Vol. 65, Issue 9</li> <li> <span class="text-muted related-url">DOI: <a href="https://doi.org/10.1103/PhysRevD.65.092002" class="text-muted" target="_blank" rel="noopener noreferrer">10.1103/PhysRevD.65.092002<span class="fa fa-external-link" aria-hidden="true"></span></a></span> </li> </ul> <hr/> </div> </div> <div class="pagination-container small"> <a class="pure-button prev page" href="#" rel="prev"><span class="fa fa-angle-left"></span></a><ul class="pagination d-inline-block" style="padding-left:.2em;"></ul><a class="pure-button next page" href="#" rel="next"><span class="fa fa-angle-right"></span></a> </div> </div> </div> <div class="col-sm-3 order-sm-3"> <ul class="nav nav-stacked"> <li class="active"><a href="" class="reference-type-filter tab-nav" data-tab="biblio-references" data-filter="type" data-pattern="*"><span class="fa fa-angle-right"></span> All References</a></li> <li class="small" style="margin-left:.75em; 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float:none;">[ × clear filter / sort ]</a> </div> </form> </div> </div> </div> </section> <section id="biblio-related" class="tab-content tab-content-sec osti-curated" data-tab="biblio"> <div class="row"> <div class="col-sm-9 order-sm-9"> <section id="biblio-similar" class="tab-content tab-content-sec active" data-tab="related"> <div class="padding"> <p class="lead text-muted" style="font-size: 18px; margin-top:0px;">Similar Records in DOE PAGES and OSTI.GOV collections:</p> <aside> <ul class="item-list" itemscope itemtype="http://schema.org/ItemList" style="padding-left:0; list-style-type: none;"> <li> <div class="article item document" itemprop="itemListElement" itemscope itemtype="http://schema.org/WebPage"><meta itemprop="position" content="1" /><div class="item-info"> <h2 class="title" itemprop="name headline"><a href="/biblio/1247128-study-energy-dependence-underlying-event-proton-antiproton-collisions" itemprop="url">Study of the energy dependence of the underlying event in proton-antiproton collisions</a></h2> <div class="metadata"> <small class="text-muted" style="text-transform:uppercase;display:block;line-height:2.5em;">Journal Article</small><span class="authors"> <span class="author">Aaltonen, T.</span> ; <span class="author">Albrow, M.</span> ; <span class="author">Amerio, S.</span> ; <span class="author">...</span> <span class="text-muted pubdata"> - Physical Review. D, Particles, Fields, Gravitation and Cosmology</span> </span> </div> <div class="abstract">We study charged particle production (p(T) > 0.5 GeV/c, vertical bar eta vertical bar < 0.8) in proton-antiproton collisions at total center-of-mass energies root s = 300 GeV, 900 GeV, and 1.96 TeV. We use the direction of the charged particle with the largest transverse momentum in each event to define three regions of eta - phi space: "toward", "away", and "transverse." The average number and the average scalar pT sum of charged particles in the transverse region are sensitive to the modeling of the "underlying event." The transverse region is divided into a MAX and MIN transverse region, which<a href='#' onclick='$(this).hide().next().show().next().show();return false;' style='margin-left:10px;'>more »</a><span style='display:none;'> helps separate the "hard component" (initial and final-state radiation) from the "beam-beam remnant" and multiple parton interaction components of the scattering. The center-of-mass energy dependence of the various components of the event is studied in detail. The data presented here can be used to constrain and improve QCD Monte Carlo models, resulting in more precise predictions at the LHC energies of 13 and 14 TeV.</span><a href='#' onclick='$(this).hide().prev().hide().prev().show();return false;' style='margin-left:10px;display:none;'>« less</a></div><div class="metadata-links small clearfix text-muted" style="margin-top:15px;"> <div class="pure-menu pure-menu-horizontal pull-right" style="width:unset;"> <ul class="pure-menu-list"> <li class="pure-menu-item"><span class="item-info-ftlink">DOI: <a class="misc doi-link " href="https://doi.org/10.1103/PhysRevD.92.092009" target="_blank" rel="noopener" title="Link to document DOI" data-ostiid="1247128" data-product-type="Journal Article" data-product-subtype="AC" >10.1103/PhysRevD.92.092009</a></span></li> </ul> </div> </div> </div> <div class="clearfix"></div> </div> </li> <li> <div class="article item document" itemprop="itemListElement" itemscope itemtype="http://schema.org/WebPage"><meta itemprop="position" content="2" /><div class="item-info"> <h2 class="title" itemprop="name headline"><a href="/biblio/981488-studying-underlying-event-drell-yan-high-transverse-momentum-jet-production-tevatron" itemprop="url">Studying the Underlying Event in Drell-Yan and High Transverse Momentum Jet Production at the Tevatron</a></h2> <div class="metadata"> <small class="text-muted" style="text-transform:uppercase;display:block;line-height:2.5em;">Journal Article</small><span class="authors"> <span class="author">,</span> ; <span class="author">Aaltonen, T</span> ; <span class="author">Adelman, J</span> ; <span class="author">...</span> <span class="text-muted pubdata"> - Submitted to Phys.Rev.D.</span> </span> </div> <div class="abstract">We study the underlying event in proton-antiproton collisions by examining the behavior of charged particles (transverse momentum p{sub T} > 0.5 GeV/c, pseudorapidity |{eta}| < 1) produced in association with large transverse momentum jets ({approx}2.2 fb{sup -1}) or with Drell-Yan lepton-pairs ({approx}2.7 fb{sup -1}) in the Z-boson mass region (70 < M(pair) < 110 GeV/c{sup 2}) as measured by CDF at 1.96 TeV center-of-mass energy. We use the direction of the lepton-pair (in Drell-Yan production) or the leading jet (in high-p{sub T} jet production) in each event to define three regions of {eta}-{phi} space; toward, away, and transverse, where {phi}<a href='#' onclick='$(this).hide().next().show().next().show();return false;' style='margin-left:10px;'>more »</a><span style='display:none;'> is the azimuthal scattering angle. For Drell-Yan production (excluding the leptons) both the toward and transverse regions are very sensitive to the underlying event. In high-p{sub T} jet production the transverse region is very sensitive to the underlying event and is separated into a MAX and MIN transverse region, which helps separate the hard component (initial and final-state radiation) from the beam-beam remnant and multiple parton interaction components of the scattering. The data are corrected to the particle level to remove detector effects and are then compared with several QCD Monte-Carlo models. The goal of this analysis is to provide data that can be used to test and improve the QCD Monte-Carlo models of the underlying event that are used to simulate hadron-hadron collisions.</span><a href='#' onclick='$(this).hide().prev().hide().prev().show();return false;' style='margin-left:10px;display:none;'>« less</a></div><div class="metadata-links small clearfix text-muted" style="margin-top:15px;"> <div class="pure-menu pure-menu-horizontal pull-right" style="width:unset;"> <ul class="pure-menu-list"> <li class="pure-menu-item"><span class="item-info-ftlink"><a class="misc fulltext-link " href="/servlets/purl/981488" title="Link to document media" target="_blank" rel="noopener" data-ostiid="981488" data-product-type="Journal Article" data-product-subtype="FT" >Full Text Available</a></span></li> </ul> </div> </div> </div> <div class="clearfix"></div> </div> </li> <li> <div class="article item document" itemprop="itemListElement" itemscope itemtype="http://schema.org/WebPage"><meta itemprop="position" content="3" /><div class="item-info"> <h2 class="title" itemprop="name headline"><a href="/pages/biblio/1221321-measurement-underlying-event-activity-using-charged-particle-jets-proton-proton-collisions-sqrt-tev" itemprop="url">Measurement of the underlying event activity using charged-particle jets in proton-proton collisions at $$\sqrt{s}$$ = 2.76 TeV</a></h2> <div class="metadata"> <small class="text-muted" style="text-transform:uppercase;display:block;line-height:2.5em;">Journal Article</small><span class="authors"> <span class="author">Khachatryan, V.</span> <span class="text-muted pubdata"> - Journal of High Energy Physics (Online)</span> </span> </div> <div class="abstract">A measurement of the underlying event (UE) activity in proton-proton collisions is performed using events with charged-particle jets produced in the central pseudorapidity region (|η<sup> jet</sup>| < 2) and with transverse momentum 1 ≤ p<sub>T</sub> <sup>jet</sup> < 100 GeV. The analysis uses a data sample collected at a centre-of-mass energy of 2.76 TeV with the CMS experiment at the LHC. The UE activity is measured as a function of p<sub>T</sub><sup> jet</sup> in terms of the average multiplicity and scalar sum of transverse momenta (p<sub>T</sub>) of charged particles, with |η| < 2 and p<sub>T</sub> > 0.5 GeV, in the azimuthal region<a href='#' onclick='$(this).hide().next().show().next().show();return false;' style='margin-left:10px;'>more »</a><span style='display:none;'> transverse to the highest p<sub>T</sub> jet direction. By further dividing the transverse region into two regions of smaller and larger activity, various components of the UE activity are separated. As a result, the measurements are compared to previous results at 0.9 and 7 TeV, and to predictions of several Monte Carlo event generators, providing constraints on the modelling of the UE dynamics</span><a href='#' onclick='$(this).hide().prev().hide().prev().show();return false;' style='margin-left:10px;display:none;'>« less</a></div><div class="metadata-links small clearfix text-muted" style="margin-top:15px;"> <span class="fa fa-book text-muted" aria-hidden="true"></span> Cited by 4<div class="pure-menu pure-menu-horizontal pull-right" style="width:unset;"> <ul class="pure-menu-list"> <li class="pure-menu-item"><span class="item-info-ftlink">DOI: <a class="misc doi-link " href="https://doi.org/10.1007/JHEP09(2015)137" target="_blank" rel="noopener" title="Link to document DOI" data-ostiid="1221321" data-product-type="Journal Article" data-product-subtype="AM" >10.1007/JHEP09(2015)137</a></span></li> <li class="pure-menu-item"><span class="item-info-ftlink"><a class="misc fulltext-link " href="/pages/servlets/purl/1221321" title="Link to document media" target="_blank" rel="noopener" data-ostiid="1221321" data-product-type="Journal Article" data-product-subtype="AM" >Full Text Available</a></span></li> </ul> </div> </div> </div> <div class="clearfix"></div> </div> </li> <li> <div class="article item document" itemprop="itemListElement" itemscope itemtype="http://schema.org/WebPage"><meta itemprop="position" content="4" /><div class="item-info"> <h2 class="title" itemprop="name headline"><a href="/pages/biblio/1407246-measurement-underlying-event-jet-events-from-tev-protonproton-collisions-atlas-detector" itemprop="url">Measurement of the underlying event in jet events from 7 TeV proton–proton collisions with the ATLAS detector</a></h2> <div class="metadata"> <small class="text-muted" style="text-transform:uppercase;display:block;line-height:2.5em;">Journal Article</small><span class="authors"> <span class="author">Aad, G.</span> ; <span class="author">Abajyan, T.</span> ; <span class="author">Abbott, B.</span> ; <span class="author">...</span> <span class="text-muted pubdata"> - European Physical Journal. C, Particles and Fields</span> </span> </div> <div class="abstract">Distributions sensitive to the underlying event in QCD jet events have been measured with the ATLAS detector at the LHC, based on 37 pb<sup>-1</sup> of proton–proton collision data collected at a centre-of-mass energy of 7 TeV. Charged-particle mean p<sub>T</sub> and densities of all-particle E<sub>T</sub> and charged-particle multiplicity and p<sub>T</sub> have been measured in regions azimuthally transverse to the hardest jet in each event. These are presented both as one-dimensional distributions and with their mean values as functions of the leading-jet transverse momentum from 20 to 800 GeV. The correlation of charged-particle mean p<sub>T</sub> with charged-particle multiplicity is also studied, and<a href='#' onclick='$(this).hide().next().show().next().show();return false;' style='margin-left:10px;'>more »</a><span style='display:none;'> the E<sub>T</sub> densities include the forward rapidity region; these features provide extra data constraints for Monte Carlo modelling of colour reconnection and beam-remnant effects respectively. For the first time, underlying event observables have been computed separately for inclusive jet and exclusive dijet event selections, allowing more detailed study of the interplay of multiple partonic scattering and QCD radiation contributions to the underlying event. Comparisons to the predictions of different Monte Carlo models show a need for further model tuning, but the standard approach is found to generally reproduce the features of the underlying event in both types of event selection.</span><a href='#' onclick='$(this).hide().prev().hide().prev().show();return false;' style='margin-left:10px;display:none;'>« less</a></div><div class="metadata-links small clearfix text-muted" style="margin-top:15px;"> <span class="fa fa-book text-muted" aria-hidden="true"></span> Cited by 18<div class="pure-menu pure-menu-horizontal pull-right" style="width:unset;"> <ul class="pure-menu-list"> <li class="pure-menu-item"><span class="item-info-ftlink">DOI: <a class="misc doi-link " href="https://doi.org/10.1140/epjc/s10052-014-2965-5" target="_blank" rel="noopener" title="Link to document DOI" data-ostiid="1407246" data-product-type="Journal Article" data-product-subtype="AM" >10.1140/epjc/s10052-014-2965-5</a></span></li> <li class="pure-menu-item"><span class="item-info-ftlink"><a class="misc fulltext-link " href="/pages/servlets/purl/1407246" title="Link to document media" target="_blank" rel="noopener" data-ostiid="1407246" data-product-type="Journal Article" data-product-subtype="AM" >Full Text Available</a></span></li> </ul> </div> </div> </div> <div class="clearfix"></div> </div> </li> <li> <div class="article item document" itemprop="itemListElement" itemscope itemtype="http://schema.org/WebPage"><meta itemprop="position" content="5" /><div class="item-info"> <h2 class="title" itemprop="name headline"><a href="/pages/biblio/1580259-underlying-event-measurements-p+p-collisions-gev-rhic" itemprop="url">Underlying event measurements in p+p collisions at √s = 200 GeV at RHIC</a></h2> <div class="metadata"> <small class="text-muted" style="text-transform:uppercase;display:block;line-height:2.5em;">Journal Article</small><span class="authors"> <span class="author">Adam, Jaroslav</span> <span class="text-muted pubdata"> - Physical Review D</span> </span> </div> <div class="abstract">In this work, particle production sensitive to non-factorizable and non-perturbative processes that contribute to the underlying event associated with a high transverse momentum (p<sub>T</sub>) jet in proton+proton collisions at p √s=200 GeV is studied with the STAR detector. Each event is divided into three regions based on the azimuthal angle with respect to the highest-p<sub>T</sub> jet direction: in the leading jet direction ("Toward"), opposite to the leading jet ("Away"), and perpendicular to the leading jet 3 ("Transverse"). In the Transverse region, the average charged particle density is found to be between 0.4 and 0.6 and the mean transverse momentum,<a href='#' onclick='$(this).hide().next().show().next().show();return false;' style='margin-left:10px;'>more »</a><span style='display:none;'> $$\langle$$p<sub>T</sub>$$\rangle$$, between 0.5-0.7 GeV/c for particles with p<sub>T</sub>>0.2 GeV/c at mid-pseudorapidity (|η|<1) and jet p<sub>T</sub>>15 GeV/c. Both average particle density and $$\langle$$p<sub>T</sub>$$\rangle$$ depend weakly on the leading jet p<sub>T</sub>. Closer inspection of the Transverse region hints that contributions to the underlying event from initial- and final-state radiation are significantly smaller in these collisions than at the higher energies, up to 13 TeV, recorded at the LHC. Underlying event measurements associated with a high-p<sub>T</sub> jet will contribute to our understanding of QCD processes at hard and soft scales at RHIC energies, as well as provide constraints to modeling of underlying event dynamics.</span><a href='#' onclick='$(this).hide().prev().hide().prev().show();return false;' style='margin-left:10px;display:none;'>« less</a></div><div class="metadata-links small clearfix text-muted" style="margin-top:15px;"> <div class="pure-menu pure-menu-horizontal pull-right" style="width:unset;"> <ul class="pure-menu-list"> <li class="pure-menu-item"><span class="item-info-ftlink">DOI: <a class="misc doi-link " href="https://doi.org/10.1103/PhysRevD.101.052004" target="_blank" rel="noopener" title="Link to document DOI" data-ostiid="1580259" data-product-type="Journal Article" data-product-subtype="AM" >10.1103/PhysRevD.101.052004</a></span></li> </ul> </div> </div> </div> <div class="clearfix"></div> </div> </li> </ul> </aside> </div> </section> <section id="biblio-related-works" class="tab-content tab-content-sec" data-tab="related"> <div class="padding"> <p class="lead text-muted" style="font-size: 18px; margin-top:0px;"><span style="text-transform:capitalize;">Other research</span> related to this record:</p> <aside> <div class="list"> <div> <h2 class="title" style="margin-bottom:0;" data-apporder=""> <a href="https://doi.org/10.17182/hepdata.70787" target="_blank" rel="noopener noreferrer" class="name">Study of the energy dependence of the underlying event in proton-antiproton collisions<span class="fa fa-external-link" aria-hidden="true"></span></a> <small class="text-muted" style="text-transform:uppercase; font-size:0.75rem;"><br/> <span class="type">dataset</span>, <span class="date" data-date="2016-02-01">February 2016</span></small> </h2> <ul class="small references-list" style="list-style-type:none; margin-top: 0.5em; padding-left: 0; line-height:1.8em;"> <li> <span style="color:#5C7B2D;"> Aaltonen, Timo-Antero; Amerio, Silvia; Amidei, Dante E.</span> </li> <li> HEPData, vp</li> <li> <span class="text-muted related-url">DOI: <a href="https://doi.org/10.17182/hepdata.70787" class="text-muted" target="_blank" rel="noopener noreferrer">10.17182/hepdata.70787<span class="fa fa-external-link" aria-hidden="true"></span></a></span> </li> <li class="text-right"> <em class="text-muted"> This dataset is a supplement to the current record</em> </li> </ul> <hr/> </div> <div> <h2 class="title" style="margin-bottom:0;" data-apporder=""> <a href="https://doi.org/10.17182/hepdata.70787.v1" target="_blank" rel="noopener noreferrer" class="name">Study of the energy dependence of the underlying event in proton-antiproton collisions<span class="fa fa-external-link" aria-hidden="true"></span></a> <small class="text-muted" style="text-transform:uppercase; font-size:0.75rem;"><br/> <span class="type">dataset</span>, <span class="date" data-date="2016-02-01">February 2016</span></small> </h2> <ul class="small references-list" style="list-style-type:none; margin-top: 0.5em; padding-left: 0; line-height:1.8em;"> <li> <span style="color:#5C7B2D;"> Aaltonen, Timo Antero; Amerio, Silvia; Amidei, Dante E.</span> </li> <li> HEPData, vp</li> <li> <span class="text-muted related-url">DOI: <a href="https://doi.org/10.17182/hepdata.70787.v1" class="text-muted" target="_blank" rel="noopener noreferrer">10.17182/hepdata.70787.v1<span class="fa fa-external-link" aria-hidden="true"></span></a></span> </li> <li class="text-right"> <em class="text-muted"> This dataset is a supplement to the current record</em> </li> </ul> <hr/> </div> </div> <div class="pagination-container small"> <a class="pure-button prev page" href="#" rel="prev"><span class="fa fa-angle-left"></span></a><ul class="pagination d-inline-block" style="padding-left:.2em;"></ul><a class="pure-button next page" href="#" rel="next"><span class="fa fa-angle-right"></span></a> </div> </aside> </div> </section> </div> <div class="col-sm-3 order-sm-3"> <ul class="nav nav-stacked"> <li class="active"><a href="#biblio-similar" class="tab-nav" data-tab="related" onclick="$('form.related-search').hide();"><span class="fa fa-angle-right"></span> Similar Records</a></li> <li class=""><a href="#biblio-related-works" class="reference-type-filter tab-nav" data-tab="related" data-filter="type" data-pattern="*" onclick="$('form.related-search').show();" style="margin-top: 2em;"><span class="fa fa-angle-right"></span> Related Works</a></li> <!-- <li><a class="tab-nav disabled" data-tab="related" style="color: #636c72 !important; 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