# CERN Preprints

Nyeste elementer:
2020-05-28
21:37
 Measurement of b jet shapes in proton-proton collisions at $\sqrt{s} =$ 5.02 TeV We present the first study of charged-hadron production associated with jets originating from b quarks in proton-proton collisions at a center-of-mass energy of 5.02 TeV. [...] CERN-EP-2020-060 ; CMS-HIN-18-020-003. - 2020. Additional information for the analysis - CMS AuthorList - Fulltext

2020-05-28
16:30
 Study of the $\psi_2(3823)$ and $\chi_{c1}(3872)$ states in $B^+\to (J/\psi \pi^+\pi^-)K^+$ decays The decays $B^+\rightarrow J/\psi \pi^+ \pi^- K^+$ are studied using a data set corresponding to an integrated luminosity of 9 fb$^{-1}$ collected with the LHCb detector in proton-proton collisions between 2011 and 2018. [...] CERN-EP-2020-071 ; arXiv:2005.13422 ; LHCB-PAPER-2020-009. - 2020. Fulltext - Related data files - Supplementary information

2020-05-28
16:15
 Study of the lineshape of the $\chi_{c1}(3872)$ state A study of the lineshape of the $\chi_{c1}(3872)$ state is made using a data sample corresponding to an integrated luminosity of 3fb$^{-1}$ collected in $pp$ collisions at centre-of-mass energies of 7 and 8 TeV with the LHCb detector. [...] CERN-EP-2020-086 ; arXiv:2005.13419 ; LHCB-PAPER-2020-008. - 2020. Fulltext - Related data file(s) - Supplementary information

2020-05-26
09:05
 Search for Higgs boson decays into two new low-mass spin-0 particles in the 4$b$ channel with the ATLAS detector using $pp$ collisions at $\sqrt{s}=13$ TeV This paper describes a search for beyond the Standard Model decays of the Higgs boson into a pair of new spin-0 particles subsequently decaying into $b$-quark pairs, $H \rightarrow aa \rightarrow (b\bar{b})(b\bar{b})$, using proton-proton collision data collected by the ATLAS detector at the Large Hadron Collider at center-of-mass energy $\sqrt{s}=13$ TeV. [...] CERN-EP-2020-067. - 2020. Fulltext - Previous draft version

2020-05-26
06:40
 Instrumentation for high-resolution laser spectroscopy at the ALTO radioactive-beam facility / Yordanov, D.T. (Orsay, IPN) ; Atanasov, D. (CERN) ; Bissell, M.L. (Manchester U.) ; Franchoo, S. (Orsay, IPN) ; Georgiev, G. (CSNSM, Orsay) ; Kanellakopoulos, A. (Leuven U.) ; Lechner, S. (CERN ; TU Vienna) ; Ramirez, E. Minaya (Orsay, IPN) ; Nichita, D. (Bucharest, IFIN-HH ; Bucharest, Polytechnic Inst.) ; Rodríguez, L.V. (Heidelberg, Max Planck Inst.) et al. Collinear laser spectroscopy is one of the essential tools for nuclear-structure studies. [...] arXiv:2005.03007. - 4 p. Fulltext

2020-05-23
04:11
 LISA Sensitivity to Gravitational Waves from Sound Waves / Schmitz, Kai Gravitational waves (GWs) produced by sound waves in the primordial plasma during a strong first-order phase transition in the early Universe are going to be a main target of the upcoming Laser Interferometer Space Antenna (LISA) experiment. [...] arXiv:2005.10789 ; CERN-TH-2020-079. - 16 p. Fulltext

2020-05-23
04:11
 Measurement of the branching fractions for $B^+\to D^{*+}D^-K^+$, $B^+\to D^{*-}D^+K^+$, and $B^0\to D^{*-}D^0K^+$ decays / LHCb Collaboration A measurement of four branching-fraction ratios for three-body decays of $B$ mesons involving two open-charm hadrons in the final state is presented. [...] arXiv:2005.10264 ; LHCb-PAPER-2020-006; CERN-EP-2020-056. - Fulltext

2020-05-23
04:10
 Mixed QCD-electroweak corrections to on-shell Z production at the LHC / Buccioni, Federico ; Caola, Fabrizio ; Delto, Maximilian ; Jaquier, Matthieu ; Melnikov, Kirill ; Röntsch, Raoul We present the first complete calculation of mixed QCD-electroweak corrections to the production of on-shell $Z$ bosons in hadron collisions and their decays to massless charged leptons. [...] arXiv:2005.10221 ; OUTP-20-04P,TTP20-021 ; P3H-20-019 ; CERN-TH-2020-072. - 6 p. Fulltext

2020-05-23
04:10
 Effects of the electronic threshold on the performance of the RPC system of the CMS experiment / Elmetenawee, W. Resistive Plate Chambers have a very important role for muon triggering both in the barrel and in the endcap regions of the CMS experiment at the Large Hadron Collider (LHC). [...] arXiv:2005.09472. - Fulltext

2020-05-21
10:23
 Search for heavy neutral lepton production in $K^+$ decays to positrons / NA62 Collaboration A search for heavy neutral lepton ($N$) production in $K^+\to e^+N$ decays using the data sample collected by the NA62 experiment at CERN in 2017--2018 is reported. [...] CERN-EP-2020-089 ; arXiv:2005.09575. - Fulltext