CERN Accelerating science

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1.
Synergistic HNO$_{3}$–H$_{2}$SO$_{4}$–NH$_{3}$ upper tropospheric particle formation / Wang, Mingyi ; Xiao, Mao ; Bertozzi, Barbara ; Marie, Guillaume ; Rörup, Birte ; Schulze, Benjamin ; Bardakov, Roman ; He, Xu-Cheng ; Shen, Jiali ; Scholz, Wiebke et al.
New particle formation in the upper free troposphere is a major global source of cloud condensation nuclei (CCN). However, the precursor vapours that drive the process are not well understood. [...]
2022 - 7 p. - Published in : Nature 605 (2022) 483-489 Fulltext: PDF;
2.
Rapid growth of new atmospheric particles by nitric acid and ammonia condensation / Wang, Mingyi (Carnegie Mellon U.) ; Kong, Weimeng (Caltech) ; Marten, Ruby (PSI, Villigen) ; He, Xu-Cheng (Helsinki U.) ; Chen, Dexian (Carnegie Mellon U.) ; Pfeifer, Joschka (CERN) ; Heitto, Arto (Kuopio U.) ; Kontkanen, Jenni (Helsinki U.) ; Dada, Lubna (Helsinki U.) ; Kürten, Andreas (Goethe U., Frankfurt (main)) et al.
Measurements in the CLOUD chamber at CERN show that the rapid condensation of ammonia and nitric acid vapours could be important for the formation and survival of new particles in wintertime urban conditions, contributing to urban smog..
2020 - 20 p. - Published in : Nature 581 (2020) 184-189 Fulltext from Publisher: PDF;
3.
New particle formation from isoprene under upper-tropospheric conditions / Shen, Jiali (Helsinki U.) ; Russell, Douglas M (Frankfurt U., FIAS) ; DeVivo, Jenna (Carnegie Mellon U.) ; Kunkler, Felix (Mainz, Max Planck Inst.) ; Baalbaki, Rima (Helsinki U.) ; Mentler, Bernhard (Innsbruck U.) ; Scholz, Wiebke (Innsbruck U.) ; Yu, Wenjuan (Helsinki U.) ; Caudillo-Plath, Lucía (Frankfurt U., FIAS) ; Sommer, Eva (CERN ; Vienna U.) et al.
Abstract Aircraft observations have revealed ubiquitous new particle formation in the tropical upper troposphere over the Amazon1,2 and the Atlantic and Pacific oceans3,4. Although the vapours involved remain unknown, recent satellite observations have revealed surprisingly high night-time isoprene mixing ratios of up to 1 part per billion by volume (ppbv) in the tropical upper troposphere5. [...]
2024 - 9 p. - Published in : Nature 636 (2024) 115-123 Fulltext: PDF; External link: Interactions.org
4.
The CMS Statistical Analysis and Combination Tool: Combine / CMS Collaboration
This paper describes the Combine software package used for statistical analyses by the CMS Collaboration. The package, originally designed to perform searches for a Higgs boson and the combined analysis of those searches, has evolved to become the statistical analysis tool presently used in the majority of measurements and searches performed by the CMS Collaboration. [...]
arXiv:2404.06614; CMS-CAT-23-001; CERN-EP-2024-078; CMS-CAT-23-001-003.- Geneva : CERN, 2024-11-08 - 69 p. - Published in : Comput. Softw. Big Sci. 8 (2024) 19 Fulltext: PDF; Fulltext from Publisher: s41781-024-00121-4 - PDF; document - PDF; External links: Additional information for the analysis; CMS AuthorList
5.
Search for $CP$ violation in D$^0$$\to$ K$^0_\mathrm{S}$K$^0_\mathrm{S}$ decays in proton-proton collisions at $\sqrt{s}$ = 13 TeV / CMS Collaboration
A search is reported for charge-parity CP violation in $ \mathrm{D^0}\to\mathrm{K^0_S}\mathrm{K^0_S} $ decays, using data collected in proton-proton collisions at $ \sqrt{s} = $ 13 TeV recorded by the CMS experiment in 2018. The analysis uses a dedicated data set that corresponds to an integrated luminosity of 41.6 fb$ ^{-1} $, which consists of about 10 billion events containing a pair of b hadrons, nearly all of which decay to charm hadrons. [...]
arXiv:2405.11606; CMS-BPH-23-005; CERN-EP-2024-120; CMS-BPH-23-005-003.- Geneva : CERN, 2024-12-06 - 26 p. - Published in : Eur. Phys. J. C 84 (2024) 1264 Fulltext: 2405.11606 - PDF; 02152eab556460c47733577874b1b8f7 - PDF; Fulltext from Publisher: PDF; External link: Fermilab Library Server
6.
Search for ZZ and ZH production in the $ \mathrm{b} \bar{\mathrm{b}}\mathrm{b} \bar{\mathrm{b}} $ final state using proton-proton collisions at $ \sqrt{s}= $ 13 TeV / CMS Collaboration
A search for ZZ and ZH production in the $ \mathrm{b} \bar{\mathrm{b}}\mathrm{b} \bar{\mathrm{b}} $ final state is presented, where H is the standard model (SM) Higgs boson. The search uses an event sample of proton-proton collisions corresponding to an integrated luminosity of 133 fb$ ^{-1} $ collected at a center-of-mass energy of 13 TeV with the CMS detector at the CERN LHC. [...]
arXiv:2403.20241; CMS-HIG-22-011; CERN-EP-2024-026; CMS-HIG-22-011-003.- Geneva : CERN, 2024-07-19 - 47 p. - Published in : Eur. Phys. J. C Fulltext: PDF; Fulltext from Publisher: PDF; External links: Additional information for the analysis; CMS AuthorList; CMS HEPData
7.
Constraints on anomalous Higgs boson couplings from its production and decay using the WW channel in proton-proton collisions at $ \sqrt{s} = $ 13 TeV / CMS Collaboration
A study of the anomalous couplings of the Higgs boson to vector bosons, including CP-violation effects, has been conducted using its production and decay in the WW channel. This analysis is performed on proton-proton collision data collected with the CMS detector at the CERN LHC during 2016-2018 at a center-of-mass energy of 13 TeV, and corresponds to an integrated luminosity of 138 fb$ ^{-1} $. [...]
arXiv:2403.00657; CMS-HIG-22-008; CERN-EP-2024-035; CMS-HIG-22-008-003.- Geneva : CERN, 2024-08-05 - 59 p. - Published in : Eur. Phys. J. C 84 (2024) 779 Fulltext: CMS-HIG-22-008-arXiv - PDF; 2403.00657 - PDF; 999ce41700289d9cc8d383be175ec240 - PDF; Fulltext from Publisher: PDF; External link: Fermilab Library Server
8.
Portable Acceleration of CMS Computing Workflows with Coprocessors as a Service / CMS Collaboration
Computing demands for large scientific experiments, such as the CMS experiment at the CERN LHC, will increase dramatically in the next decades. To complement the future performance increases of software running on central processing units (CPUs), explorations of coprocessor usage in data processing hold great potential and interest. [...]
arXiv:2402.15366; CMS-MLG-23-001; CERN-EP-2023-303; CMS-MLG-23-001-003.- Geneva : CERN, 2024-09-04 - 55 p. - Published in : Comput. Softw. Big Sci. 8 (2024) 17 Fulltext: PDF; Fulltext from Publisher: PDF; External links: Additional information for the analysis; CMS AuthorList
9.
Measurement of multijet azimuthal correlations and determination of the strong coupling in proton-proton collisions at $ \sqrt{s}= $ 13 TeV / CMS Collaboration
A measurement is presented of a ratio observable that provides a measure of the azimuthal correlations among jets with large transverse momentum $ p_{\mathrm{T}} $. This observable is measured in multijet events over the range of $ p_{\mathrm{T}} = $ 360-3170 GeV based on data collected by the CMS experiment in proton-proton collisions at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 134 fb$ ^{-1} $. [...]
arXiv:2404.16082; CMS-SMP-22-005; CERN-EP-2024-066; CMS-SMP-22-005-003.- Geneva : CERN, 2024-08-21 - 35 p. - Published in : Eur. Phys. J. C 84 (2024) 842 Fulltext: 2404.16082 - PDF; 9b666df070fddd7317d0b4021023ae3c - PDF; Fulltext from Publisher: PDF; External link: Fermilab Library Server
10.
Measurements of the Higgs boson production cross section and couplings in the W boson pair decay channel in proton-proton collisions at $\sqrt{s}$ = 13 TeV / CMS Collaboration
Production cross sections of the standard model Higgs boson decaying to a pair of W bosons are measured in proton-proton collisions at a center-of-mass energy of 13 TeV. The analysis targets Higgs bosons produced via gluon fusion, vector boson fusion, and in association with a W or Z boson. [...]
arXiv:2206.09466; CMS-HIG-20-013; CERN-EP-2022-120; CMS-HIG-20-013-003.- Geneva : CERN, 2023-07-26 - 52 p. - Published in : Eur. Phys. J. C 83 (2023) 667 Fulltext: PDF; Fulltext from Publisher: PDF; External links: Additional information for the analysis; CMS AuthorList

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