CERN Accelerating science

SEE ALSO: PREPRINTS
ABOUT PREPRINTS
The Preprints collection aims to cover as far as possible all the grey literature in particle physics and its related technologies. The collection contains something like 400,000 documents, out of which about 50% can be accessed electronically. The documents originate from a variety of institutes all over the world. The collection, currently available, starts in 1979 and it has a full coverage of the arXiv.org e-Print archive since its beginning in 1991.

Preprints

Latest additions:
2018-07-21
11:09
Multiplicity dependence of strangeness and hadronic resonance production in pp and p-Pb collisions with ALICE at the LHC / Dash, Ajay Kumar
One of the key results of the LHC Run 1 was the observation of an enhanced production of strange particles in high multiplicity pp and p--Pb collisions at $\sqrt{s_\mathrm{NN}}$ = 7 and 5.02 TeV, respectively. [...]
arXiv:1807.07469.
- 5 p.
Full text - Fulltext

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2018-07-21
11:09
Non-strange and strange D-meson and charm-baryon production in heavy-ion collisions measured with ALICE at the LHC / Peng, Xinye
We present recent result on strange and non-strange D-meson production measured with ALICE in Pb--Pb collisions at the LHC. [...]
arXiv:1807.07286.
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00009 The $\Lambda_{{\rm c}}^+/{\rm D^0}$ ratio in Pb--Pb collisions at $\sqrt{s_{\scriptscriptstyle \rm NN}}$ = 5.02 TeV, compared with that in pp and p--Pb collisions (left), and $\Lambda_{{\rm c}}^+$-baryon $R_{\rm AA}$ in 0-80\% Pb--Pb collisions at 5.02 TeV compared to average non-strange D-meson, ${\rm D}_{\rm s}^+$-meson, $\pi ^\pm$ and charged particle $R_{\rm AA}$ in 0-10\% centrality class - 00007 The $\Lambda_{{\rm c}}/{\rm D^0}$ raito in pp collisions at $\sqrt{s}$ = 7 TeV and in p--Pb collisions at $\sqrt{s_{\scriptscriptstyle \rm NN}}$ = 5.02 TeV, compared with model predictions (left) and $\Lambda/{\rm K}^0_{\rm s}$, ${\rm p}/{\pi}$ ratios in pp (middle) and p--Pb (right) collisions. - 00006 Non-strange D-meson $R_{\rm AA}$ in the 0-10\% centrality class (left) and elliptic flow $v_{2}$ in the 30-50\% centrality class~\cite{v2} (right), compared with models predictions~\cite{LBT,MCsHQ,PHSD,POWLANG,Uphoff:2014hza,He:2014cla}. - 00011 Non-strange D-meson $R_{\rm AA}$ in the 0-10\% centrality class (left) and elliptic flow $v_{2}$ in the 30-50\% centrality class~\cite{v2} (right), compared with models predictions~\cite{LBT,MCsHQ,PHSD,POWLANG,Uphoff:2014hza,He:2014cla}. - 00008 The $\Lambda_{{\rm c}}^+/{\rm D^0}$ ratio in Pb--Pb collisions at $\sqrt{s_{\scriptscriptstyle \rm NN}}$ = 5.02 TeV, compared with that in pp and p--Pb collisions (left), and $\Lambda_{{\rm c}}^+$-baryon $R_{\rm AA}$ in 0-80\% Pb--Pb collisions at 5.02 TeV compared to average non-strange D-meson, ${\rm D}_{\rm s}^+$-meson, $\pi ^\pm$ and charged particle $R_{\rm AA}$ in 0-10\% centrality class - Fulltext - 00010 The $\Lambda_{{\rm c}}/{\rm D^0}$ raito in pp collisions at $\sqrt{s}$ = 7 TeV and in p--Pb collisions at $\sqrt{s_{\scriptscriptstyle \rm NN}}$ = 5.02 TeV, compared with model predictions (left) and $\Lambda/{\rm K}^0_{\rm s}$, ${\rm p}/{\pi}$ ratios in pp (middle) and p--Pb (right) collisions. - Fulltext

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2018-07-21
11:09
A uniqueness theorem for warped $N>16$ Minkowski backgrounds with fluxes / Lautz, Sebastian (King's Coll. London, Dept. Math) ; Papadopoulos, George (King's Coll. London, Dept. Math ; CERN)
We demonstrate that warped Minkowski space backgrounds, $\mathbb{R}^{n-1,1}\times_w M^{d-n}$, $n\geq3$, that preserve strictly more than 16 supersymmetries in $d=11$ and type II $d=10$ supergravities and with fields which may not be smooth everywhere are locally isometric to the $\mathbb{R}^{d-1,1}$ Minkowski vacuum. [...]
arXiv:1807.01783.
- 7 p.
Preprint

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2018-07-20
18:21
Search for charged Higgs bosons decaying via $H^{\pm} \to \tau^{\pm}\nu_{\tau}$ in the $\tau$+jets and $\tau$+lepton final states with 36 fb$^{-1}$ of $pp$ collision data recorded at $\sqrt{s} = 13$ TeV with the ATLAS experiment
Charged Higgs bosons produced either in top-quark decays or in association with a top-quark, subsequently decaying via $H^{\pm} \to \tau^{\pm}\nu_{\tau}$, are searched for in 36.1 fb$^{-1}$ of proton-proton collision data at $\sqrt{s}=13$ TeV recorded with the ATLAS detector. [...]
CERN-EP-2018-148.
- 2018.
Fulltext - Previous draft version

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2018-07-20
04:10
Higher moment fluctuations of identified particle distributions from ALICE / Behera, Nirbhay Kumar
Cumulants of conserved charges fluctuations are regarded as a potential tool to study the criticality in the QCD phase diagram and to determine the freeze-out parameters in a model-independent way. [...]
arXiv:1807.06780.
- 4 p.
Full text - 00011 Energy dependence of $\mathrm{C}_{3}/\mathrm{C}_{2}$ and $\mathrm{C}_{4}/\mathrm {C}_{2}$ of net-proton distributions for the most central collisions. - 00007 Energy dependence of $\mathrm{C}_{3}/\mathrm{C}_{2}$ and $\mathrm{C}_{4}/\mathrm {C}_{2}$ of net-proton distributions for the most central collisions. - 00013 (From left to right) Centrality dependence of $\mathrm{C}_{2}$, $\mathrm{C}_{3}$ and $\mathrm{C}_{4}$ of net-proton distributions in Pb--Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 and 5.02 TeV. The the vertical lines and boxes represents the statistical and systematic uncertainties, respectively. - 00009 (From left to right) Centrality dependence of $\mathrm{C}_{2}$, $\mathrm{C}_{3}$ and $\mathrm{C}_{4}$ of net-proton distributions in Pb--Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 and 5.02 TeV. The the vertical lines and boxes represents the statistical and systematic uncertainties, respectively. - 00008 (From left to right) Centrality dependence of $\mathrm{C}_{2}$, $\mathrm{C}_{3}$ and $\mathrm{C}_{4}$ of net-proton distributions in Pb--Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 and 5.02 TeV. The the vertical lines and boxes represents the statistical and systematic uncertainties, respectively. - 00010 Centrality dependence of $\mathrm{C}_{3}/\mathrm{C}_{2}$ and $\mathrm{C}_{4}/\mathrm {C}_{2}$ of net-proton distributions in Pb--Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 and 5.02 TeV. The the vertical lines and boxes represents the statistical and systematic uncertainties, respectively. - 00012 Centrality dependence of $\mathrm{C}_{3}/\mathrm{C}_{2}$ and $\mathrm{C}_{4}/\mathrm {C}_{2}$ of net-proton distributions in Pb--Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 and 5.02 TeV. The the vertical lines and boxes represents the statistical and systematic uncertainties, respectively. - Fulltext

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2018-07-20
04:10
Elliptic polylogarithms and two-loop Feynman integrals / Broedel, Johannes ; Duhr, Claude ; Dulat, Falko ; Penante, Brenda ; Tancredi, Lorenzo
We review certain classes of iterated integrals that appear in the computation of Feynman integrals that involve elliptic functions. [...]
arXiv:1807.06238 ; CERN-TH-2018-163 ; CP3-18-45 ; HU-EP-18-22 ; HU-Mathematik-2018-08 ; SLAC-PUB-17302.
- 10 p.
Fulltext - Fulltext

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2018-07-20
04:10
Exploring the Phase Space of Jet Splittings at ALICE using Grooming and Recursive Techniques / Andrews, Harry Arthur
Hard splittings in the evolution of a jet may be modified by the presence of a dense strongly interacting medium. [...]
arXiv:1807.06439.
- 4 p.
00008 Lund kinematical diagram representation of splittings with limits imposed by a jet resolution $R$ (left)~\cite{THInst}, and populated for splittings in vacuum PYTHIA 6 Perugia 11 (right). - 00010 figure - 00009 figure - Fulltext - 00007 Lund kinematical diagram representation of splittings with limits imposed by a jet resolution $R$ (left)~\cite{THInst}, and populated for splittings in vacuum PYTHIA 6 Perugia 11 (right). - 00013 Raw Pb--Pb distributions of $z_{\rm{g}}$ for $R=0.4$ jets with varying minimum angular separation of subjets ($R_{\rm{g}}$) for jets with $ 80 \leq \pTjetchrec < 120$ GeV/$c$. The distributions are normalised to the total number of jets in the sample in this \pTjetchrec ~bin without cuts on $R_{\rm{g}}$. - 00011 Raw Pb--Pb distributions of $z_{\rm{g}}$ for $R=0.4$ jets with varying minimum angular separation of subjets ($R_{\rm{g}}$) for jets with $ 80 \leq \pTjetchrec < 120$ GeV/$c$. The distributions are normalised to the total number of jets in the sample in this \pTjetchrec ~bin without cuts on $R_{\rm{g}}$. - 00012 figure - Fulltext

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2018-07-20
04:10
Heavy-flavour hadron decay leptons in Pb--Pb and Xe--Xe collisions at the LHC with ALICE / Dubla, Andrea
Heavy quarks, i.e. [...]
arXiv:1807.05382.
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Full text - 00009 Left: Comparison of the $R_{\rm AA}$ of electrons from beauty-hadron decays (red markers) with the one from charm- plus beauty-hadron decays (black markers) in Pb--Pb collisions at $\sqrt{s}$ = 5.02 TeV. Right: $R_{\rm AA}$ of electrons from beauty hadron decay in comparison with models implementing mass-dependent energy loss \cite{EPOS, Djordjevic, PHSD} in Pb--Pb collisions at $\sqrt{s}$ = 5.02 TeV. - 00010 Left: $R_{\rm AA}$ of electrons from heavy-flavour hadron decays as a function of $p_{\rm T}$ in central (0-10\%) Pb--Pb (black and grey markers) and in p--Pb (blue markers) collisions \cite{rpPbelectron} at $\sqrt{s}$ = 5.02 TeV. Right: $R_{\rm AA}$ of electrons from heavy-flavour hadron decays at $\sqrt{s}$ = 2.76 TeV in comparison with model calculations with and without the inclusion of the EPS09 shadowing parameterisations \cite{POWLANG, EPOS, TAMU}. - 00007 Nuclear modification factors of electrons (black markers) and muons (red markers) from heavy-flavour hadron decay in central (left panel) and semi-central (right panel) Xe--Xe collisions at $\sqrt{s_{\rm NN}}$ = 5.44 TeV. - 00006 Left: Comparison of the $R_{\rm AA}$ of electrons from beauty-hadron decays (red markers) with the one from charm- plus beauty-hadron decays (black markers) in Pb--Pb collisions at $\sqrt{s}$ = 5.02 TeV. Right: $R_{\rm AA}$ of electrons from beauty hadron decay in comparison with models implementing mass-dependent energy loss \cite{EPOS, Djordjevic, PHSD} in Pb--Pb collisions at $\sqrt{s}$ = 5.02 TeV. - 00008 $p_\mathrm{T}$-differential production cross section for electrons from heavy-flavour hadron decay in pp collisions at several collision energies (from left to right panel: $\sqrt{s}$ = 2.76, 5.02, 7 and 13 TeV) in comparison with FONLL calculations \cite{FONLL}. - 00011 Left: $R_{\rm AA}$ of electrons from heavy-flavour hadron decays as a function of $p_{\rm T}$ in central (0-10\%) Pb--Pb (black and grey markers) and in p--Pb (blue markers) collisions \cite{rpPbelectron} at $\sqrt{s}$ = 5.02 TeV. Right: $R_{\rm AA}$ of electrons from heavy-flavour hadron decays at $\sqrt{s}$ = 2.76 TeV in comparison with model calculations with and without the inclusion of the EPS09 shadowing parameterisations \cite{POWLANG, EPOS, TAMU}. - Fulltext

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2018-07-20
04:10
HEP Software Foundation Community White Paper Working Group - Training, Staffing and Careers / HEP Software Foundation Collaboration
The rapid evolution of technology and the parallel increasing complexity of algorithmic analysis in HEP requires developers to acquire a much larger portfolio of programming skills. [...]
HSF-CWP-2017-02 ; HSF-CWP-2017-02 ; arXiv:1807.02875.
- 17 p.
Preprint

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2018-07-20
04:10
From modular forms to differential equations for Feynman integrals / Broedel, Johannes (Humboldt U., Berlin, Inst. Math.) ; Duhr, Claude (CERN ; Louvain U., CP3) ; Dulat, Falko (SLAC) ; Penante, Brenda (CERN) ; Tancredi, Lorenzo (CERN)
In these proceedings we discuss a representation for modular forms that is more suitable for their application to the calculation of Feynman integrals in the context of iterated integrals and the differential equation method. [...]
arXiv:1807.00842.
- 24 p.
Preprint

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