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2019-02-21
16:48
Searches for third-generation scalar leptoquarks in $\sqrt{s} = 13$ TeV $pp$ collisions with the ATLAS detector
Limits are set on the pair production of scalar leptoquarks, where all possible decays of the leptoquark into a quark ($t$, $b$) and a lepton ($\tau$, $\nu$) of the third generation are considered. [...]
CERN-EP-2019-026. - 2019.
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2019-02-20
06:32
Irradiation studies of a multi-doped Gd$_3$Al$_2$Ga$_3$O$_{12}$ scintillator / Alenkov, V (Unlisted, RU) ; Buzanov, O (Unlisted, RU) ; Dosovitskiy, G (Kurchatov Inst., Moscow) ; Egorychev, V (Moscow, ITEP) ; Fedorov, A (Minsk, Inst. Nucl. Problems) ; Golutvin, A (Natl. U. Sci. Tech., Moscow ; Imperial Coll., London) ; Guz, Yu (Serpukhov, IHEP) ; Jacobsson, R (CERN) ; Korjik, M (Kurchatov Inst., Moscow ; Minsk, Inst. Nucl. Problems) ; Kozlov, D (Minsk, Inst. Nucl. Problems) et al.
The characteristics of a Gd$_3$Al$_2$Ga$_3$O$_{12}$ crystal scintillator doped with cerium and co-doped with magnesium and titanium have been studied, mainly in view of using it for the Phase II upgrade of the LHCb electromagnetic calorimeter. [...]
2018. - 4 p.

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2019-02-20
04:42
Probing the Scale of New Physics in the $ZZ\gamma$ Coupling at $e^+e^-$ Colliders / Ellis, John ; Ge, Shao-Feng ; He, Hong-Jian ; Xiao, Rui-Qing
The $ZZ\gamma$ and $Z\gamma\gamma$ triple neutral gauge couplings are absent in the Standard Model (SM) at the tree level. [...]
arXiv:1902.06631 ; KCL-PH-TH/2019-11 ; CERN-TH/2019-008 ; IPMU19-0021. - 28 p.
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2019-02-20
04:42
Ultra-peripheral-collision studies in the fixed-target mode with the proton and lead LHC beams / Yamanaka, N. (Orsay, IPN) ; Hadjidakis, C. (Orsay, IPN) ; Kikola, D. (Orsay, IPN) ; Lansberg, J.P. (Orsay, IPN) ; Massacrier, L. (Orsay, IPN) ; Echevarria, M.G. (INFN, Pavia) ; Kusina, A. (Cracow, INP) ; Schienbein, I. (LPSC, Grenoble) ; Seixas, J. (Lisbon, IST ; LIP, Lisbon) ; Shao, H.S. (Paris, LPTHE) et al.
We address the physics case related to the studies of ultra-peripheral pH, pPb, PbH, and PbPb collisions in the fixed-target mode at the LHC. [...]
arXiv:1902.06642. - 6 p.
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2019-02-20
04:42
Cosmological Shapes of Higher-Spin Gravity / Anninos, D. (King's Coll. London, Dept. Math) ; De Luca, V. (Geneva U., CAP ; CERN) ; Franciolini, G. (Geneva U., CAP ; CERN) ; Kehagias, A. (Natl. Tech. U., Athens) ; Riotto, A. (Geneva U., CAP ; CERN)
We explore non-Gaussian features of a massless spin-two field in the Vasiliev theory of higher-spin gravity. [...]
arXiv:1902.01251. - 35 p.
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2019-02-19
15:12
Measurement of $b$-hadron fractions in 13 TeV $pp$ collisions / LHCb Collaboration
The production fractions of $\overline{B}{_s^0}$ and $\Lambda_b^0$ hadrons, normalized to the sum of $B^-$ and $\overline{B}{^0}$ fractions, are measured in 13 TeV pp collisions using data collected by the LHCb experiment, corresponding to an integrated luminosity of 1.67fb$^{-1}$. [...]
arXiv:1902.06794 ; CERN-EP-2019-016 ; LHCb-PAPER-2018-050 ; LHCB-PAPER-2018-050. - 2019. - 14 p, 14 p.
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2019-02-19
13:43
Combinations of single-top-quark production cross-section measurements and $|f_{\rm LV}V_{tb}|$ determinations at $\sqrt{s}=7$ and 8 TeV with the ATLAS and CMS experiments / ATLAS and CMS Collaborations
This paper presents the combinations of single-top-quark production cross-section measurements by the ATLAS and CMS Collaborations, using data from LHC proton-proton collisions at $\sqrt{s}=7$ and 8 TeV corresponding to integrated luminosities of 1.17 to 5.1 fb$^{-1}$ at $\sqrt{s}=7$ TeV, and 12.2 to 20.3 fb$^{-1}$ at $\sqrt{s}=8$ TeV. [...]
arXiv:1902.07158 ; CERN-EP-2019-005. - 2019. - 81 p, 81 p.
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2019-02-19
10:57
Measurements of bottomonium production in pp and PbPb collisions at $\sqrt{s_{\mathrm{NN}}\space}$ = 5.02 TeV / Oh, Geonhee (Chonnam Natl. U.) /CMS Collaboration
Bottomonia are important probes of the quark-gluon plasma since they are produced at early times and propagate through the medium. The production cross sections of the three $\Upsilon$ states (1S, 2S, 3S) were measured by CMS in pp and PbPb collisions at $\sqrt{s_{\mathrm{NN}}\space}$ = 5.02 ${\mathrm{TeV}}\space$. [...]
CMS-CR-2019-003.- Geneva : CERN, 2019 - 6 p. Fulltext: PDF;
In : Hard Probes 2018: International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions, Aix-les-bains, France, 1 - 5 Oct 2018

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2019-02-19
04:10
A magnetic spectrometer to measure electron bunches accelerated at AWAKE / AWAKE Collaboration
A magnetic spectrometer has been developed for the AWAKE experiment at CERN in order to measure the energy distribution of bunches of electrons accelerated in wakefields generated by proton bunches in plasma. [...]
arXiv:1902.05752. -
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2019-02-19
04:10
$t\bar{t}$ + $Z$ / $W$ / $t\bar{t}$ at ATLAS / Nellist, Clara (Gottingen U.)
The newest results from the ATLAS Collaboration for the production of a top-quark pair in association with a $Z$ or $W$ boson, and for the production of four top quarks, are summarised in these proceedings. [...]
arXiv:1902.00118. - 7 p.
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