# CERN Preprints

Последно добавени:
2019-03-21
08:49
 Observation of $C\!P$ violation in charm decays A search for charge-parity ($C\!P$) violation in $D^0 \to K^- K^+$ and $D^0 \to \pi^- \pi^+$ decays is reported, using $pp$ collision data corresponding to an integrated luminosity of 6 $\mathrm{fb}^{-1}$ collected at a center-of-mass energy of 13 TeV with the LHCb detector. [...] CERN-EP-2019-042 ; LHCB-PAPER-2019-006. - 2019. Fulltext - Related data file(s) - Supplementary information

2019-03-21
04:03
 Probing the trilinear Higgs boson coupling in di-Higgs production at NLO QCD including parton shower effects / Heinrich, G. (Munich, Max Planck Inst.) ; Jones, S.P. (CERN) ; Kerner, M. (Zurich U.) ; Luisoni, G. (Munich, Max Planck Inst.) ; Scyboz, L. (Munich, Max Planck Inst.) We present results for Higgs boson pair production with variations of the trilinear Higgs boson self-coupling at next-to-leading order (NLO) in QCD including the full top quark mass dependence. [...] arXiv:1903.08137 ; CERN-TH-2019-028 ; MPP-2019-50 ; ZU-TH-09/19. - 20 p. Fulltext

2019-03-21
04:03
 The $\hat{H}$-Parameter: An Oblique Higgs View / Englert, Christoph ; Giudice, Gian F. ; Greljo, Admir ; McCullough, Matthew We study, from theoretical and phenomenological angles, the Higgs boson oblique parameter $\hat{H}$, as the hallmark of off-shell Higgs physics. [...] arXiv:1903.07725 ; CERN-TH-2019-027 ; DAMTP-2019-8. - 26 p. Fulltext

2019-03-21
04:03
 Thermal Quarkonium Mass Shift from Euclidean Correlators / Eller, Alexander M. ; Ghiglieri, Jacopo ; Moore, Guy D. Brambilla, Escobedo, Soto, and Vairo have derived an effective description of quarkonium with two parameters; a momentum diffusion term and a real self-energy term. [...] arXiv:1903.08064 ; CERN-TH-2019-025. - 5 p. Fulltext

2019-03-20
13:28
 Calibration and performance of the CMS electromagnetic calorimeter during the LHC Run II / Dimova, Tatyana (Novosibirsk State U.) /CMS Collaboration Many physics analyses using the Compact Muon Solenoid (CMS) detector at the LHC require accurate, high resolution electron and photon energy measurements. Excellent energy resolution is crucial for studies of Higgs boson decays with electromagnetic particles in the final state, as well as searches for very high mass resonances decaying to energetic photons or electrons. [...] CMS-CR-2018-377.- Geneva : CERN, 2018 - 8 p. Fulltext: PDF; In : Sixt International Conference " Engineering of Scintillation Materials and Radiation Technologies", Minsk, Belarus, 26 - 30 Sep 2016

2019-03-20
10:46
 The performance of the CMS Muon system with data at $\sqrt s$ = 13 TeV / Hadjiiska, Roumyana Mileva (Sofiya, Inst. Nucl. Res.) /CMS Collaboration The muon spectrometer of the CMS experiment is based on three different gaseous detector technologies: Drift Tube (DT) chambers in the barrel, Cathode Strip Chambers (CSC) in the endcaps, and Resistive Plate Chambers (RPC) both in the barrel and endcaps. The performance of the muon system has been studied with LHC proton-proton collision data, collected with the CMS detector, at $\sqrt s$ = 13 TeV. [...] CMS-CR-2018-167.- Geneva : CERN, 2018 - 12 p. Fulltext: PDF; In : 10th International Physics Conference of the Balkan Physical Union, Sofia, Bulgaria, 26 - 30 Aug 2018

2019-03-20
05:05
 Expectation value of $\mathrm{T}\overline{\mathrm{T}}$ operator in curved spacetimes / Jiang, Yunfeng We study the expectation value of the $\mathrm{T}\overline{\mathrm{T}}$ operator in spacetimes with constant curvature. [...] arXiv:1903.07561 ; CERN-TH-2019-030. - 29 p. Fulltext

2019-03-20
05:05
 Recent Results from the CERN LHC Experiment TOTEM -- Implications for Odderon Exchange / Csörgő, T. Recent results are summarized from the TOTEM experiment at CERN LHC, including measurements of the total, elastic and inelastic cross-sections, the nuclear slope parameter $B$, the differential cross-section of elastic scattering and the real to imaginary part ration $\rho$ at $\sqrt{s} =$ 2.76 and 13 TeV. [...] arXiv:1903.06992. - 14 p. Fulltext

2019-03-20
05:04
 Measurements of $CP$ asymmetries in charmless four-body $\Lambda_b$ and $\Xi_b^0$ decays / LHCb Collaboration A search for $CP$ violation in charmless four-body decays of $\Lambda_b$ and $\Xi_b^0$ baryons with a proton and three charged mesons in the final state is performed. [...] arXiv:1903.06792 ; LHCb-PAPER-2018-044 and CERN-EP-2019-13. - Fulltext

2019-03-20
05:04
 Electromagnetic probes of primordial black holes as dark matter / Kashlinsky, A. (NASA, Goddard ; SSAI, Lanham) ; Ali-Haimoud, Y. (New York U.) ; Clesse, S. (Louvain U. ; Namur U.) ; Garcia-Bellido, J. (Madrid, IFT ; CSIC, Madrid) ; Wyrzykowski, L. (Warsaw U.) ; Achucarro, A. (Leiden U.) ; Amendola, L. (Heidelberg U.) ; Annis, J. (Fermilab) ; Arbey, A. (Lyon U.) ; Arendt, R.G. (NASA, Goddard ; Maryland U., Baltimore County) et al. The LIGO discoveries have rekindled suggestions that primordial black holes (BHs) may constitute part to all of the dark matter (DM) in the Universe. [...] arXiv:1903.04424 ; FERMILAB-PUB-19-111-CD. - Full text