# CERN Preprints

2021-07-30
16:21
 Simultaneous determination of CKM angle $\gamma$ and charm mixing parameters /LHCb Collaboration A combination of measurements sensitive to the $CP$ violation angle $\gamma$ of the Cabibbo--Kobayashi--Maskawa (CKM) unitarity triangle and to the charm mixing parameters that describe oscillations between $D^0$ and $\overline{D}^0$ mesons is performed. Results from the charm and beauty sectors, based on data collected with the LHCb detector at CERN's Large Hadron Collider, are included together for the first time. [...] LHCb-CONF-2021-002; CERN-LHCb-CONF-2021-002.- Geneva : CERN, 2021 - 22. Fulltext: LHCb-CONF-2021-002 - PDF; LHCb-CONF-2021-001-figures - ZIP; In : European Physics Society conference on High Energy Physics 2021, Online, Online, 26 - 30 Jul 2021

2021-07-29
17:06
 Angular analysis of the rare decay $B^0_s \to \phi \mu^+\mu^-$ The abstract for the paper is An angular analysis of the rare decay $B^0_s\rightarrow\phi\mu^+\mu^-$ is presented, using proton-proton collision data collected by the LHCb experiment at centre-of-mass energies of $7$, $8$ and $13~\rm{TeV}$, corresponding to an integrated luminosity of 8.4~$\rm{fb}^{-1}$. [...] CERN-EP-2021-138 ; arXiv:2107.13428 ; LHCB-PAPER-2021-022. - 2021. Related data file(s) - Fulltext - Supplementary information

2021-07-29
16:30
 Measurement of prompt charged-particle production in $pp$ collisions at $\sqrt{s} = 13\,\mathrm{TeV}$ / LHCb Collaboration The differential cross-section of prompt inclusive production of long-lived charged particles in proton-proton collisions is measured using a data sample recorded by the LHCb experiment at a centre-of-mass energy of ${\sqrt{s} = 13\,\mathrm{TeV}}$. [...] arXiv:2107.10090 ; CERN-EP-2021-110 ; LHCB-PAPER-2021-010. - 2021. Fulltext - Related data file(s) - Supplementary information

2021-07-29
15:41
 Probing effective field theory operators in the associated production of top quarks with a Z boson in multilepton final states at $\sqrt{s} =$ 13 TeV A search for new top quark interactions is performed within the framework of an effective field theory using the associated production of either one or two top quarks with a Z boson in multilepton final states. [...] CERN-EP-2021-126 ; CMS-TOP-21-001-003. - 2021. Additional information for the analysis - CMS AuthorList - Fulltext

2021-07-29
04:47
 On an Exponential Representation of the Gravitational S-Matrix / Damgaard, Poul H. (Bohr Inst. ; CERN) ; Plante, Ludovic (Unlisted, FR) ; Vanhove, Pierre (IPhT, Saclay ; Higher Sch. of Economics, Moscow) An exponential representation of the S-matrix provides a natural framework for understanding the semi-classical limit of scattering amplitudes. [...] arXiv:2107.12891 ; IPhT-t21/037 ; CERN-TH-2021-111. - 26 p.

2021-07-28
09:05
 Synchronization in the system of coupled van der Pol oscillators under hysteretic bonds: an analytic approach within the small parameter method / Semenov, Mikhail (Voronezh State U.) ; Meleshenko, Peter (Voronezh State U.) ; Reshetova, Olga (Voronezh State U.) ; Solovyov, Andrey (Unlisted, RU) The paper deals with a system of coupled van der Pol oscillators with hysteresis nonlinearity in the link. [...] 2020. - 4 p.

2021-07-28
09:04
 Simulation of ultrashort pulse scattering by a conductive cylinder / Zhabin, Alexey (Unlisted, RU) ; Karamov, Sergey (Unlisted, RU) ; Krisilov, Alexey (Unlisted, RU) Results of electrodynamical simulations of the ultrashort pulse scattering on a conductive cylindrical target are presented. [...] 2020. - 3 p.

2021-07-28
08:23
 Results from a Pilot Study on the Measurement of Nuclear Fragmentation with NA61/SHINE at the CERN SPS: $^{11}\text{C}$ Production in $\text{C+p}$ Interactions at 13.5 A GeV/c / Amin, Neeraj (LPSC, Grenoble ; KIT, Karlsruhe, TP) We report the analysis of data taken during a pilot run in 2018 to study the feasibility of nuclear fragmentation measurements with the NA61/SHINE experiment at the CERN SPS. [...] arXiv:2107.12275. - 9 p.

2021-07-28
07:59
 Search for new particles in events with energetic jets and large missing transverse momentum in proton-proton collisions at $\sqrt{s} =$ 13 TeV A search is presented for new particles produced at the LHC in proton-proton collisions at $\sqrt{s} =$ 13 TeV, using events with energetic jets and large missing transverse momentum. [...] CERN-EP-2021-136 ; CMS-EXO-20-004-003. - 2021. Additional information for the analysis - CMS AuthorList - Fulltext

2021-07-28
04:03
 A Brewster route to Cherenkov detectors / Lin, Xiao (Hangzhou, Zhejiang U. ; Zhejiang U., Inst. Mod. Phys.) ; Hu, Hao (Nanyang Polytechnic) ; Easo, Sajan (Rutherford) ; Yang, Yi (MIT, LNS) ; Shen, Yichen (Boston U.) ; Yin, Kezhen (CNT, Minneapolis) ; Blago, Michele Piero (CERN ; Cambridge U.) ; Kaminer, Ido (Technion) ; Zhang, Baile (Nanyang Polytechnic ; Nanyang Technol. U.) ; Chen, Hongsheng (Hangzhou, Zhejiang U. ; Zhejiang U., Inst. Mod. Phys.) et al. The Cherenkov effect enables a valuable tool, known as the Cherenkov detector, to identify high-energy particles via the measurement of the Cherenkov cone. [...] arXiv:2107.11996. -