2024-08-13 05:27 |
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2024-08-08 05:10 |
Overview of $B \to K^{(*)}\ell \ell$ Theoretical Calculations and Uncertainties
/ Mahmoudi, Farvah (IP2I, Lyon ; CERN ; IUF, Paris) ; Monceaux, Yann (IP2I, Lyon)
The search for New Physics (NP) beyond the Standard Model (SM) has been a central focus of particle physics, including in the context of $B$-meson decays involving $b \to s \ell \ell$ transitions. These transitions, mediated by flavour-changing neutral currents, are highly sensitive to small NP effects due to their suppression in the SM. [...]
arXiv:2408.03235; CERN-TH-2024-119.-
2024-08-07 - 23 p.
- Published in : Symmetry: 16 (2024) , no. 8, pp. 1006
Fulltext: 2408.03235 - PDF; document - PDF; Publication - PDF;
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2024-08-03 06:45 |
Four-loop two-mass tadpoles and the $\rho$ parameter
/ Abreu, Samuel (CERN ; U. Edinburgh, Higgs Ctr. Theor. Phys.) ; Behring, Arnd (CERN) ; McLeod, Andrew J. (CERN ; U. Edinburgh, Higgs Ctr. Theor. Phys.) ; Page, Ben (CERN ; Gent U.)
We calculate four-loop QCD corrections to the electroweak $\rho$ parameter with a non-vanishing $b$ quark mass. At three loops, it was observed that elliptic integrals contribute to this observable. [...]
arXiv:2407.21700; CERN-TH-2024-129.-
2024-09-17 - 12 p.
- Published in : PoS: LL2024 (2024) , pp. 008
Fulltext: 2407.21700 - PDF; document - PDF;
In : 17th Loops and Legs in Quantum Field Theory (LL 2024), Wittenberg, Germany, 14 - 19 Apr 2024, pp.008
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2024-08-01 07:13 |
Multiscalar Critical Models with Localised Cubic Interactions
/ Harribey, Sabine (Nordita ; Stockholm U. (main) ; Royal Inst. Tech., Stockholm) ; Pannell, William H. (King's Coll. London, Dept. Math) ; Stergiou, Andreas (King's Coll. London, Dept. Math ; CERN)
Interface localised interactions are studied for multiscalar universality classes accessible with the perturbative $\varepsilon$ expansion in $4-\varepsilon$ dimensions. The associated beta functions at one loop and partially at two loops are derived, and a wide variety of interface conformal field theories (CFTs) is found, even in cases where the bulk universality class is free or as simple as the Wilson-Fisher description of the $O(N)$ model. [...]
arXiv:2407.20326; CERN-TH-2024-122; CERN-TH-2024-122.-
2024-12-12 - 33 p.
- Published in : JHEP 2412 (2024) 092
Fulltext: 2407.20326 - PDF; document - PDF;
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2024-08-01 06:54 |
Toponium hunter’s guide
/ Aguilar-Saavedra, J.A. (Madrid, IFT)
We address the discovery and characterisation of toponium production at the Large Hadron Collider. In the dilepton decay mode, multivariate analyses of spin and colour observables could provide evidence that an excess of events present near the $t \bar t$ threshold corresponds to a spin-zero colour singlet. [...]
arXiv:2407.20330; IFT-UAM/CSIC-24-112; CERN-TH-2024-123.-
2024-09-01 - 10 p.
- Published in : Phys. Rev. D 110 (2024) 054032
Fulltext: 2407.20330 - PDF; Publication - PDF;
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2024-07-30 04:22 |
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2024-07-26 04:22 |
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2024-07-18 04:27 |
A Phenomenological Analysis of LHC Neutrino Scattering at NLO Accuracy Matched to Parton Showers
/ van Beekveld, Melissa (NIKHEF, Amsterdam) ; Ferrario Ravasio, Silvia (CERN) ; Groenendijk, Eva (NIKHEF, Amsterdam) ; Krack, Peter (NIKHEF, Amsterdam ; Vrije U., Amsterdam) ; Rojo, Juan (NIKHEF, Amsterdam ; Vrije U., Amsterdam) ; Sánchez, Valentina Schütze (NIKHEF, Amsterdam)
We perform a detailed phenomenological study of high-energy neutrino deep inelastic scattering (DIS) focused on LHC far-forward experiments such as FASER$\nu$ and SND@LHC. To this aim, we parametrise the neutrino fluxes reaching these LHC far-forward experiments in terms of `neutrino PDFs' encoding their energy and rapidity dependence by means of the LHAPDF framework. [...]
arXiv:2407.09611; Nikhef 2024-012; CERN-TH-2024-111.-
2024-11-18 - 25 p.
- Published in : Eur. Phys. J. C 84 (2024) 1175
Fulltext: 2407.09611 - PDF; document - PDF;
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2024-07-18 04:25 |
Personal reminiscences of Steven Weinberg
/ Quevedo, Fernando (Cambridge U., DAMTP ; CERN)
My personal recollections are presented regarding my interactions with Steven Weinberg and the impact he had in my career from when I was his graduate student until the present..
arXiv:2407.10033; CERN-TH-2024-105.-
2024-07-06 - 6 p.
Fulltext: PDF;
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2024-07-16 05:25 |
QCD corrections to Higgs boson production and $H \to b \bar{b}$ decay in weak boson fusion
/ Asteriadis, Konstantin (Regensburg U.) ; Behring, Arnd (CERN) ; Melnikov, Kirill (KIT, Karlsruhe, TTP) ; Novikov, Ivan (KIT, Karlsruhe, TTP) ; Röntsch, Raoul (INFN, Milan ; Milan U.)
We study QCD corrections to the process where a Higgs boson is produced in weak boson fusion and then decays into a pair of massive $b$ quarks. We find that typical experimental criteria used to identify $b$ jets in this process affect QCD corrections to the decay, making it necessary to account for them in the proper description of this process. [...]
arXiv:2407.09363; TTP24-019; P3H-24-040; CERN-TH-2024-095; TIF-UNIMI-2024-5.-
2024-09-01 - 12 p.
- Published in : Phys. Rev. D 110 (2024) 054017
Fulltext: 2407.09363 - PDF; Publication - PDF;
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