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2023-02-07
17:53
High Energy LHC Machine Options in the LHC Tunnel / Bottura, Luca (CERN) ; Zimmermann, Frank (CERN)
The LHC infrastructure, i.e. [...]
CERN-ACC-2023-0001. - 2023. - 20 p.

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2023-02-07
10:43
Measurement of the ratios of branching fractions $\mathcal{R}(D^{*})$ and $\mathcal{R}(D^{0})$
The ratios of branching fractions $\mathcal{R}(D^{*})\equiv\mathcal{B}(\bar{B}\to D^{*}\tau^{-}\bar{\nu}_{\tau})/\mathcal{B}(\bar{B}\to D^{*}\mu^{-}\bar{\nu}_{\mu})$ and $\mathcal{R}(D^{0})\equiv\mathcal{B}(B^{-}\to D^{0}\tau^{-}\bar{\nu}_{\tau})/\mathcal{B}(B^{-}\to D^{0}\mu^{-}\bar{\nu}_{\mu})$ are measured, assuming isospin symmetry, using a sample of proton-proton collision data corresponding to 3.0 fb${ }^{-1}$ of integrated luminosity recorded by the LHCb experiment during 2011 and 2012. [...]
CERN-EP-2022-284 ; LHCB-PAPER-2022-039. - 2023.
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2023-02-07
08:01
Light-quark connected intermediate-window contributions to the muon $g-2$ hadronic vacuum polarization from lattice QCD / Bazavov, Alexei (Michigan State U.) ; Davies, Christine (SUPA, UK) ; DeTar, Carleton (Utah U.) ; El-Khadra, Aida X. (Illinois U., Urbana) ; Gámiz, Elvira (CAFPE, Granada ; Granada U., Theor. Phys. Astrophys.) ; Gottlieb, Steven (Indiana U.) ; Jay, William I. (MIT, Cambridge, CTP) ; Jeong, Hwancheol (Indiana U.) ; Kronfeld, Andreas S. (Fermilab) ; Lahert, Shaun (Illinois U., Urbana) et al.
We present a lattice-QCD calculation of the light-quark connected contribution to window observables associated with the leading-order hadronic vacuum polarization contribution to the anomalous magnetic moment of the muon, $a_\mu^{\mathrm{HVP,LO}}$. [...]
arXiv:2301.08274 ; FERMILAB-PUB-23-006-T. - 42 p.
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2023-02-07
07:48
Dark Sector Showers in the Lund Jet Plane / Cohen, Timothy (CERN ; EPFL, Lausanne, LPTP ; Oregon U.) ; Roloff, Jennifer (Brookhaven) ; Scherb, Christiane (LBL, Berkeley ; UC, Berkeley (main))
We investigate the consequences of models where dark sector quarks could be produced at the LHC, which subsequently undergo a dark parton shower, generating jets of dark hadrons that ultimately decay back to Standard Model hadrons. [...]
arXiv:2301.07732 ; CERN-TH-2023-007. - 11 p.
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2023-02-07
04:49
Measurement of the ratios of branching fractions $\mathcal{R}(D^{*})$ and $\mathcal{R}(D^{0})$
The ratios of branching fractions $\mathcal{R}(D^{*})\equiv\mathcal{B}(\bar{B}\to D^{*}\tau^{-}\bar{\nu}_{\tau})/\mathcal{B}(\bar{B}\to D^{*}\mu^{-}\bar{\nu}_{\mu})$ and $\mathcal{R}(D^{0})\equiv\mathcal{B}(B^{-}\to D^{0}\tau^{-}\bar{\nu}_{\tau})/\mathcal{B}(B^{-}\to D^{0}\mu^{-}\bar{\nu}_{\mu})$ are measured, assuming isospin symmetry, using a sample of proton-proton collision data corresponding to 3.0 fb${ }^{-1}$ of integrated luminosity recorded by the LHCb experiment during 2011 and 2012. [...]
LHCb-PAPER-2022-039 ; CERN-EP-2022-284 ; arXiv:2302.02886. -
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2023-02-07
04:31
An update of Euclidean windows of the hadronic vacuum polarization / Blum, T. (Connecticut U.) ; Boyle, P.A. (Brookhaven ; U. Edinburgh) ; Bruno, M. (Milan Bicocca U. ; INFN, Milan Bicocca) ; Giusti, D. (Regensburg U.) ; Gülpers, V. (U. Edinburgh) ; Hill, R.C. (U. Edinburgh) ; Izubuchi, T. (Brookhaven ; RIKEN BNL) ; Jang, Y.-C. (Brookhaven ; Columbia U. ; Columbia U., Astron. Astrophys.) ; Jin, L. (Connecticut U. ; RIKEN BNL) ; Jung, C. (Brookhaven) et al.
We compute the standard Euclidean window of the hadronic vacuum polarization using multiple independent blinded analyses. [...]
arXiv:2301.08696. - 24 p.
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2023-02-07
04:31
An Infinite Family of Elliptic Ladder Integrals / McLeod, Andrew (CERN ; UCLA) ; Morales, Roger (Bohr Inst.) ; von Hippel, Matt (Bohr Inst.) ; Wilhelm, Matthias (Bohr Inst.) ; Zhang, Chi (Bohr Inst.)
We identify two families of ten-point Feynman diagrams that generalize the elliptic double box, and show that they can be expressed in terms of the same class of elliptic multiple polylogarithms to all loop orders. [...]
arXiv:2301.07965. - 28 p.
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2023-02-07
04:30
On interplay between flavour anomalies and neutrino properties / Freitas, Felipe F. (Aveiro U.) ; Gonçalves, João (Aveiro U.) ; Morais, António P. (Aveiro U.) ; Pasechnik, Roman (Lund U., Dept. Theor. Phys. ; Lund U.) ; Porod, Werner (Wurzburg U.)
A minimal extension of the Standard Model (SM) featuring two scalar leptoquarks, an SU(2) doublet with hypercharge 1/6 and a singlet with hypercharge 1/3, is proposed as an economical benchmark model for studies of an interplay between flavour physics and properties of the neutrino sector. [...]
arXiv:2206.01674 ; CERN-TH-2022-208. - 14 p.
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2023-02-07
04:23
Ensemble Reservoir Computing for Dynamical Systems: Prediction of Phase-Space Stable Region for Hadron Storage Rings / Casanova, Maxime (IRFU, Saclay, DACM ; Milan U., Math. Dept.) ; Dalena, Barbara (IRFU, Saclay, DACM) ; Bonaventura, Luca (Milan U., Math. Dept.) ; Giovannozzi, Massimo (CERN)
We investigate the ability of an ensemble reservoir computing approach to predict the long-term behaviour of the phase-space region in which the motion of charged particles in hadron storage rings is bounded, the so-called dynamic aperture. [...]
arXiv:2301.06786. - 32 p.
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2023-02-07
04:23
Effective description of sub-maximal chaos: stringy effects for SYK scrambling / Choi, Changha (Perimeter Inst. Theor. Phys.) ; Haehl, Felix M. (U. Southampton (main)) ; Mezei, Márk (Oxford U., Inst. Math.) ; Sárosi, Gábor (CERN)
It has been proposed that the exponential decay and subsequent power law saturation of out-of-time-order correlation functions can be universally described by collective 'scramblon' modes. [...]
arXiv:2301.05698. - 38 p.
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