# CERN Preprints

2020-01-28
18:21
 Search for physics beyond the standard model in events with jets and two same-sign or at least three charged leptons in proton-proton collisions at $\sqrt{s}=$ 13 TeV A data sample of events from proton-proton collisions with at least two jets, and two isolated same-sign or three or more charged leptons, is studied in a search for signatures of new physics phenomena. [...] CERN-EP-2020-001 ; CMS-SUS-19-008-003. - 2020. Additional information for the analysis - CMS AuthorList - Fulltext

2020-01-28
11:10
 3-D localization of radioactive hotspots via portable gamma cameras / Paradiso, V (Mirion Tech., France ; CERN) ; Amgarou, K (CEA Marcoule, Bagnols-sur-Cèze) ; Blanc de Lanaute, N (Mirion Tech., France) ; Bonnet, F (Mirion Tech., France) ; Beltramello, O (CERN) ; Liénard, E (Caen U.) A portable stereo gamma camera has been built, based on two hybrid pixelated detectors, each of them comprising a 1 mm thick CdTe substrate bump-bonded to the Timepix readout chip, a pixelated CMOS ASIC consisting of 256 × 256 pixels with 55 µm pitch. The technique described in this paper allows the automatic estimation of the distances between the prototype and the located radioactive sources by using triangulation based on epipolar geometry. [...] 2018. - 10 p.

2020-01-28
04:51
 The Drell-Yan cross section to third order in the strong coupling constant / Duhr, Claude ; Dulat, Falko ; Mistlberger, Bernhard We present phenomenological results for the inclusive cross section for the production of a lepton-pair via virtual photon exchange at next-to-next-to-next-to-leading order (N$^3$LO) in perturbative QCD. [...] CERN-TH-2020-009 ; MIT-CTP/5174 ; SLAC-PUB-17508 ; arXiv:2001.07717. - Fulltext

2020-01-28
04:51
 Latest results on the production of hadronic resonances in ALICE at the LHC / Khuntia, Arvind Measurement of short-lived hadronic resonances are used to study different aspects of particle production and collision dynamics in pp, p-A and relativistic heavy-ion collisions. [...] arXiv:2001.09023. - 4 p. Fulltext

2020-01-28
04:50
 Black holes (often) saturate entanglement entropy the fastest / Mezei, Márk (SUNY, Stony Brook) ; van der Schee, Wilke (CERN) There is a simple bound on how fast the entanglement entropy of a subregion of a many-body quantum system can saturate in a quench: $t_\text{sat}\geq R/v_B$, where $t_\text{sat}$ is the saturation time, $R$ the radius of the largest inscribed sphere, and $v_B$ the butterfly velocity characterizing operator growth. [...] arXiv:2001.03172. - 9 p. Fulltext

2020-01-28
04:50
 Baryon production from small to large collision systems at ALICE / Vazquez Rueda, Omar (Lund U.) Studies of the production of light- and heavy-flavor baryons are of prominent importance to characterize the partonic phase created in ultrarelativistic heavy-ion collisions and to investigate hadronization mechanisms at the LHC. [...] arXiv:2001.03156. - 7 p. Fulltext

2020-01-28
04:50
 Emergence of Quark-Gluon Plasma Phenomena / Grosse-Oetringhaus, Jan Fiete (CERN) The discovery of QGP phenomena in small collision systems like pp and p-Pb collisions have challenged the basic paradigms of heavy-ion and high-energy physics. [...] arXiv:2001.02880. - 11 p. Fulltext

2020-01-28
04:50
 Updated design of the CMB polarization experiment satellite LiteBIRD / Sugai, H. (Tohoku U., Sendai, ELPH) ; Ade, P.A.R. (Cardiff U.) ; Akiba, Y. (Nishina Ctr., RIKEN) ; Alonso, D. (Cardiff U. ; Oxford U.) ; Arnold, K. (UC, San Diego) ; Aumont, J. (IRAP, Toulouse) ; Austermann, J. (NIST, Boulder) ; Baccigalupi, C. (CERN) ; Banday, A.J. (IRAP, Toulouse) ; Banerji, R. (APC, Paris) et al. Recent developments of transition-edge sensors (TESs), based on extensive experience in ground-based experiments, have been making the sensor techniques mature enough for their application on future satellite CMB polarization experiments. [...] arXiv:2001.01724. - 11 p. Fulltext

2020-01-27
13:16
 Localization of vacuum breakdown locations in RF structures using S-parameter data / WU, Chien Hung (the University of Oxford (GB)) ; Paszkiewicz, Jan (University of Oxford (GB)) This project is an investigation to ﬁnd the breakdown locations using a new method involving group delays of the Scattering parameters (or S-parameters). [...] CERN-ACC-2020-0006 ; CLIC-Note-1157. - 2019. - 13 p. Full text

2020-01-26
04:49
 Unravelling the complex behavior of Mrk 421 with simultaneous X-ray and VHE observations during an extreme flaring activity in April 2013 / MAGIC Collaboration We report on a multi-band variability and correlation study of the TeV blazar Mrk 421 during an exceptional flaring activity observed from 2013 April 11 to 2013 April 19. [...] arXiv:2001.08678. - 46 p. Fulltext