CERN Accelerating science

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1.
PyHEP.dev 2024 Workshop Summary Report, August 26-30 2024, Aachen, Germany / Alshehri, Azzah (Ain Shames U.) ; Bürger, Jan (KISTI, Daejeon) ; Chopra, Saransh (University Coll. London) ; Eich, Niclas (RWTH Aachen U.) ; Eppelt, Jonas (KIT, Karlsruhe, TTP) ; Erdmann, Martin (RWTH Aachen U.) ; Eschle, Jonas (Syracuse U.) ; Fackeldey, Peter (KISTI, Daejeon ; RWTH Aachen U.) ; Farkas, Maté (RWTH Aachen U.) ; Feickert, Matthew (Wisconsin U., Madison) et al.
The second PyHEP.dev workshop, part of the "Python in HEP Developers" series organized by the HEP Software Foundation (HSF), took place in Aachen, Germany, from August 26 to 30, 2024. [...]
arXiv:2410.02112.
- 16.
Fulltext
2.
Measurement of the effective leptonic weak mixing angle / LHCb Collaboration
Using $pp$ collision data at $\sqrt{s}=13$~TeV, recorded by the LHCb experiment between 2016 and 2018 and corresponding to an integrated luminosity of $5.4$~fb$^{-1}$, the forward-backward asymmetry in the $pp \to Z/\gamma^{*} \to \mu^+\mu^-$ process is measured. The measurement is carried out in ten intervals of the difference between the muon pseudorapidities, within a fiducial region covering dimuon masses between $66$ and $116$ GeV, muon pseudorapidities between $2.0$ and $4.5$ and muon transverse momenta above $20$ GeV. [...]
arXiv:2410.02502; LHCb-PAPER-2024-028; CERN-EP-2024-230.- Geneva : CERN, 2024-12-03 - 26 p. - Published in : JHEP 2412 (2024) 026 Fulltext: LHCb-PAPER-2024-028 - PDF; 2410.02502 - PDF; document - PDF; Related data file(s): ZIP; Supplementary information: LHCb-PAPER-2024-028-supplementary - ZIP; supplementary (3) - PDF;
3.
Search for a light CP-odd Higgs boson decaying into a pair of $\tau$-leptons in proton-proton collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector / ATLAS Collaboration
This paper reports a search for a light CP-odd scalar resonance with a mass of 20 GeV to 90 GeV in 13 TeV proton-proton collision data with an integrated luminosity of 140 fb$^{-1}$ collected with the ATLAS detector at the Large Hadron Collider. The analysis assumes the resonance is produced via gluon-gluon fusion and decays exclusively into a $\tau^{+}\tau^{-}$ pair which decays into a fully leptonic $\mu^{+}\nu_{\mu} \bar{\nu}_{\tau} e^{-} \bar{\nu}_{e} \nu_{\tau}$ or $e^{+}\nu_{e}\bar{\nu}_{\tau} \mu^-\bar{\nu}_{\mu}\nu_{\tau}$ final state. [...]
arXiv:2409.20381; CERN-EP-2024-235.- Geneva : CERN, 2024-12-17 - 52 p. - Published in : JHEP 2412 (2024) 126 Fulltext: ANA-HDBS-2021-08-PAPER - PDF; 2409.20381 - PDF; document - PDF; External link: Previous draft version
4.
Search for supersymmetry using vector boson fusion signatures and missing transverse momentum in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector / ATLAS Collaboration
This paper presents a search for supersymmetric particles in models with highly compressed mass spectra, in events consistent with being produced through vector boson fusion. The search uses 140 fb$^{-1}$ of proton-proton collision data at $\sqrt{s}=13$ TeV collected by the ATLAS experiment at the Large Hadron Collider. [...]
arXiv:2409.18762; CERN-EP-2024-246.- Geneva : CERN, 2024-12-17 - 45 p. - Published in : JHEP 2412 (2024) 116 Fulltext: ANA-SUSY-2023-26-PAPER - PDF; 2409.18762 - PDF; document - PDF; External link: Previous draft version
5.
Probing exotic cross-shell interactions at $N=28$ with single-neutron transfer on $^{47}$K / Paxman, C.J. (Surrey U.) ; Matta, A. (LPC, Caen) ; Catford, W.N. (Surrey U.) ; Lotay, G. (Surrey U.) ; Assié, M. (IJCLab, Orsay) ; Clément, E. (GANIL) ; Lemasson, A. (GANIL) ; Ramos, D. (GANIL) ; Orr, N.A. (LPC, Caen) ; Galtarossa, F. (IJCLab, Orsay) et al.
We present the first measurement of the $^{47}$K($d,p\gamma$)$^{48}$K transfer reaction, performed in inverse kinematics using a reaccelerated beam of $^{47}$K. [...]
arXiv:2409.12594.
- 7.
Fulltext
6.
Analysis of $\it{\Lambda}^\mathrm{0}_b \rightarrow pK^-\mu^+\mu^-$ decays / LHCb Collaboration
The differential branching fraction and angular coefficients of ${\it{\Lambda}^\mathrm{0}_b \rightarrow pK^-\mu^+\mu^-}$ decays are measured in bins of the dimuon mass squared and dihadron mass. The analysis is performed using a data set corresponding to 9$fb^-1$ of integrated luminosity collected with the $\mbox{LHCb}$ detector between 2011 and 2018. [...]
arXiv:2409.12629; CERN-EP-2024-212; LHCb-PAPER-2024-024.- Geneva : CERN, 2024-12-19 - 33 p. - Published in : JHEP 2412 (2024) 147 Fulltext: 2409.12629 - PDF; document - PDF; Related data file(s): ZIP; Supplementary information: ZIP;
7.
Measurement of $CP$ violation in $B^0 \to D^+D^-$ and $B_s^0 \to D_s^+D_s^-$ decays / LHCb Collaboration
A time-dependent, flavour-tagged measurement of $CP$ violation is performed with ${B^0}\rightarrow{D^{+}D^{-}}$ and ${B^{0}_{s}}\rightarrow{D^{+}_{s}D^{-}_{s}}$ decays, using data collected by the LHCb detector in proton-proton collisions at a centre-of-mass energy of 13 TeV corresponding to an integrated luminosity of 6 fb$^{-1}$. In ${B^0}\rightarrow{D^{+}D^{-}}$ decays the $CP$-violation parameters are measured to be \begin{align} S_{D^{+}D^{-}} & = -0.552 \pm 0.100\text{(stat)} \pm 0.010\text{(syst)}, \nonumber \newline C_{D^{+}D^{-}} & = \phantom{-}0.128 \pm0.103\text{(stat)} \pm 0.010\text{(syst)}. [...]
arXiv:2409.03009; LHCb-PAPER-2024-027; CERN-EP-2024-217; LHCB-PAPER-2024-027.- Geneva : CERN, 2025-01-09 - 26 p. - Published in : JHEP 2501 (2025) 061 Fulltext: LHCb-PAPER-2024-027 - PDF; 2409.03009 - PDF; document - PDF; Related data file(s): ZIP;
8.
Measurement of $\Lambda_b^0$, $\Lambda_c^+$ and $\Lambda$ decay parameters using $\Lambda_b^0 \to \Lambda_c^+h^-$ decays / LHCb Collaboration
A comprehensive study of the angular distributions in the bottom-baryon decays $\it{\Lambda}^\mathrm{0}_b\to\it{\Lambda}_c^+ h^-(h=\pi, K)$, followed by $\it{\Lambda}_c^+\to\it{\Lambda} h^+$ with $\it{\Lambda}\to \it{p} \pi^-$ or $\it{\Lambda}_c^+\to\it{p}\it{K}^0_\mathrm{S}$ decays, is performed using a data sample of proton-proton collisions corresponding to an integrated luminosity of 9 $\mathrm{fb}^{-1}$ collected by the LHCb experiment at center-of-mass energies of 7, 8 and 13 $\mathrm{Te\kern -0.1em V}$. The decay parameters and the associated charge-parity ($CP$) asymmetries are measured, with no significant $CP$ violation observed. [...]
arXiv:2409.02759; LHCb-PAPER-2024-017; CERN-EP-2024-200.- Geneva : CERN, 2024-12-30 - 15 p. - Published in : Phys. Rev. Lett. 133 (2024) 261804 Fulltext: 2409.02759 - PDF; Publication - PDF; Related data file(s): ZIP;
9.
Measurement of $CP$ violation observables in $D^+\to K^-K^+\pi^+$ decays / LHCb Collaboration
A search for violation of the charge-parity ($CP$) symmetry in the $D^+\rightarrow K^-K^+\pi^+$ decay is presented, with proton-proton collision data corresponding to an integrated luminosity of 5.4 fb$^{-1}$, collected at a center-of-mass energy of 13 TeV with the LHCb detector. A novel model-independent technique is used to compare the $D^+$ and $D^-$ phase-space distributions, with instrumental asymmetries subtracted using the $D^+{s}\rightarrow K^-K^+\pi^+$ decay as a control channel. [...]
arXiv:2409.01414; CERN-EP-2024-204; LHCb-PAPER-2024-019.- Geneva : CERN, 2024-12-16 - 13 p. - Published in : Phys. Rev. Lett. 133 (2024) 251801 Fulltext: 2409.01414v1 - PDF; 2409.01414 - PDF; Publication - PDF; Related data file(s): ZIP;
10.
Study of the rare decay $J\mskip -3mu/\mskip -2mu\psi \to \mu^+\mu^-\mu^+\mu^-$ / LHCb Collaboration
The rare electromagnetic $J\mskip -3mu/\mskip -2mu\psi \to \mu^+\mu^-\mu^+\mu^-$ decay is observed with a significance greatly exceeding the discovery threshold, using proton-proton collision data collected by the LHCb experiment during 2016--2018 at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of $5.4\,\text{fb}^{-1}$. The rate of this decay is measured relative to that of the $J\mskip -3mu/\mskip -2mu\psi \to \mu^+\mu^-$ mode. [...]
arXiv:2408.16646; LHCb-PAPER-2024-016; CERN-EP-2024-201; LHCB-PAPER-2024-016.- Geneva : CERN, 2024-12-10 - 25 p. - Published in : JHEP 2412 (2024) 062 Fulltext: LHCb-PAPER-2024-016_arxiv - PDF; 2408.16646 - PDF; document - PDF; Related data file(s): ZIP;

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128 Oliver, L
1 Oliver, Les
1 Oliver, Lluis
1 Oliver, Lodge Laboratory, University of Liverpool, Liverpool, UK Storà, Thierry
4 Oliver, Luis
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