CERN Accelerating science

Pàgina inicial > CERN Departments > Theoretical Physics (TH) > TH Articles

TH Articles

Cercar en 14,522 registres:
Consells de cerca :: Cerca simple
Afegit/modificat des de: fins a:
Ordena'ls per: Mostrar els resultats: Format de visualizació:
Darreres entrades:
2024-08-08
05:10
Overview of $B \to K^{(*)}\ell \ell$ Theoretical Calculations and Uncertainties / Mahmoudi, F. (IP2I, Lyon ; CERN ; IUF, Paris) ; Monceaux, Y. (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 - 23 p. - Published in : Symmetry: 16 (2024) , no. 8, pp. 1006 Fulltext: 2408.03235 - PDF; Publication - PDF;

Registre complet - Registres semblants
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;

Registre complet - Registres semblants
2024-06-14
06:02
Heavy-to-light form factors to three loops / Fael, Matteo (CERN) ; Huber, Tobias (Siegen U.) ; Lange, Fabian (Zurich U. ; PSI, Villigen) ; Müller, Jakob (Siegen U.) ; Schönwald, Kay (Zurich U.) ; Steinhauser, Matthias (KIT, Karlsruhe, TTP)
We compute three-loop corrections of $\mathcal{O}(\alpha_{s}^3)$ to form factors with one massive and one massless quark coupling to an external vector, axialvector, scalar, pseudoscalar, or tensor current. We obtain analytic results for the color-planar contributions, for the contributions of light-quark loops, and the contributions with two heavy-quark loops. [...]
arXiv:2406.08182; CERN-TH-2024-064; P3H-24-036; PSI-PR-24-13; SI-HEP-2024-14; TTP24-017; ZU-TH28/24.- 2024-09-01 - 51 p. - Published in : Phys. Rev. D 110 (2024) 056011 Fulltext: PDF;

Registre complet - Registres semblants
2024-06-12
04:50
Self-interacting dark matter solves the final parsec problem of supermassive black hole mergers / Alonso-Álvarez, Gonzalo (Toronto U. ; McGill U.) ; Cline, James M. (McGill U. ; CERN) ; Dewar, Caitlyn (McGill U.)
Evidence for a stochastic gravitational wave (GW) background, plausibly originating from the merger of supermassive black holes (SMBHs), is accumulating with observations from pulsar timing arrays. An outstanding question is how inspiraling SMBHs get past the "final parsec" of separation, where they have a tendency to stall before GW emission alone can make the binary coalesce. [...]
arXiv:2401.14450; CERN-TH-2024-016.- 2024-07-09 - 7 p. - Published in : Phys. Rev. Lett. 133 (2024) 021401 Fulltext: 2401.14450 - PDF; Publication - PDF; External links: Astronomy.com article; Physics Synopsis

Registre complet - Registres semblants
2024-06-12
04:50
The non-first-order-factorizable contributions to the three-loop single-mass operator matrix elements <math altimg="si1.svg"><msubsup><mrow><mi>A</mi></mrow><mrow><mi>Q</mi><mi>g</mi></mrow><mrow><mo stretchy="false">(</mo><mn>3</mn><mo stretchy="false">)</mo></mrow></msubsup></math> and <math altimg="si2.svg"><mi mathvariant="normal">Δ</mi><msubsup><mrow><mi>A</mi></mrow><mrow><mi>Q</mi><mi>g</mi></mrow><mrow><mo stretchy="false">(</mo><mn>3</mn><mo stretchy="false">)</mo></mrow></msubsup></math> / Ablinger, J. (Linz U. ; Linz U., RISC ; OAW, Linz, RICAM) ; Behring, A. (CERN) ; Blümlein, J. (DESY, Zeuthen ; Dortmund U.) ; De Freitas, A. (Linz U. ; Linz U., RISC ; DESY, Zeuthen) ; von Manteuffel, A. (Regensburg U.) ; Schneider, C. (Linz U. ; Linz U., RISC) ; Schönwald, K. (Zurich U.)
The non-first-order-factorizable contributions (The terms 'first-order-factorizable contributions' and 'non-first-order-factorizable contributions' have been introduced and discussed in Refs. \cite{Behring:2023rlq,Ablinger:2023ahe}. [...]
arXiv:2403.00513; ZU-TH-13/24; DO-TH-23/15; RISC Report series 24-02; CERN-TH-2024-30; DESY-24-027.- 2024-05-13 - 8 p. Fulltext: 2403.00513 - PDF; Publication - PDF;

Registre complet - Registres semblants
2024-06-11
04:44
An event generator for Lepton-Hadron Deep Inelastic Scattering at NLO+PS with POWHEG including mass effects / Buonocore, Luca (CERN) ; Limatola, Giovanni (Turin U.) ; Nason, Paolo (INFN, Milan Bicocca ; Munich, Max Planck Inst.) ; Tramontano, Francesco (CERN ; Naples U.)
We present a generator for lepton nucleon collisions in the DIS regime, focusing in particular on processes with a massive lepton and/or a massive quark in the final state. We have built a full code matching NLO QCD corrections to parton shower Monte Carlo programs in the POWHEG-BOX framework. [...]
arXiv:2406.05115; CERN-TH-2024-070.- 2024-08-12 - 49 p. - Published in : JHEP 2408 (2024) 083 Fulltext: 2406.05115 - PDF; document - PDF;

Registre complet - Registres semblants
2024-05-11
21:19
Baryon-number — flavor separation in the topological expansion of QCD / Frenklakh, David (SUNY, Stony Brook) ; Kharzeev, Dmitri (SUNY, Stony Brook ; Brookhaven) ; Rossi, Giancarlo (INFN, Rome ; Enrico Fermi Ctr., Rome) ; Veneziano, Gabriele (CERN ; College de France)
Gauge invariance of QCD dictates the presence of string junctions in the wave functions of baryons. In high-energy inclusive processes, these baryon junctions have been predicted to induce the separation of the flows of baryon number and flavor. [...]
arXiv:2405.04569; CERN-TH-2024-055.- 2024-07-30 - 27 p. - Published in : JHEP 2407 (2024) 262 Fulltext: 2405.04569 - PDF; document - PDF;

Registre complet - Registres semblants
2024-05-09
04:49
$\mathrm{D}$ and $\mathrm{D_s}$ decay constants in $N_{\rm f}=2+1$ QCD with Wilson fermions / Kuberski, Simon (CERN ; Mainz U., Inst. Phys. ; Darmstadt, GSI) ; Joswig, Fabian (Edinburgh U.) ; Collins, Sara (Regensburg U.) ; Heitger, Jochen (Munster U., ITP) ; Söldner, Wolfgang (Regensburg U.) /RQCD Collaboration ; ALPHA Collaboration
We present results for the leptonic decay constants of the D and D$_{\rm s}$ mesons from $N_{\rm f}=2+1$ lattice QCD. We employ a set of 49 high statistics gauge ensembles generated by the Coordinated Lattice Simulations (CLS) effort utilising non-perturbatively improved Wilson fermions and the tree-level Symanzik improved gauge action at six values of the lattice spacing in the range $a = 0.098\,$fm down to $a = 0.039\,$fm, with pion masses varying from around $420\,$MeV down to below the physical point. [...]
arXiv:2405.04506; CERN-TH-2024-052; MITP-24-047; MS-TP-24-09.- 2024-07-10 - 44 p. - Published in : JHEP 2407 (2024) 090 Fulltext: document - PDF; 2405.04506 - PDF;

Registre complet - Registres semblants
2024-05-03
04:13
Two-loop mixed QCD-EW corrections to charged current Drell-Yan / Armadillo, Tommaso (Louvain U., CP3 ; Milan U.) ; Bonciani, Roberto (Rome U.) ; Devoto, Simone (Milan U. ; Gent U.) ; Rana, Narayan (NISER, Jatni) ; Vicini, Alessandro (Milan U. ; CERN)
We present the two-loop mixed strong-electroweak virtual corrections to the charged current Drell-Yan process. The final-state collinear singularities are regularised by the lepton mass. [...]
arXiv:2405.00612; TIF-UNIMI-2024-3; CERN-TH-2024-047.- 2024-07-30 - 26 p. - Published in : JHEP 2407 (2024) 265 Fulltext: document - PDF; 2405.00612 - PDF;

Registre complet - Registres semblants
2024-04-27
05:39
Probing Neutral Triple Gauge Couplings via $\boldsymbol{Z\gamma\,(\ell^+\ell^-\gamma)}$ Production at $\boldsymbol{e^+e^-}$ Colliders / Liu, Danning (Shanghai Jiao Tong U.) ; Xiao, Rui-Qing (Shanghai Jiao Tong U. ; King's Coll. London) ; Li, Shu (Shanghai Jiao Tong U. ; Maryland U. ; Peking U., CHEP) ; Ellis, John (Shanghai Jiao Tong U. ; King's Coll. London ; CERN) ; He, Hong-Jian (Shanghai Jiao Tong U. ; Peking U., CHEP) ; Yuan, Rui (Shanghai Jiao Tong U.)
Neutral triple gauge couplings (nTGCs) are absent in the Standard Model (SM) and at the dimension-6 level in the Standard Model Effective Field Theory (SMEFT), arising first from dimension-8 operators. As such, they provide a unique window for probing new physics beyond the SM. [...]
arXiv:2404.15937; KCL-PH-TH/2024-18; CERN-TH-2024-046.- 2024-04-24 - 22 p. - Published in : Front. Phys. (Beijing) 20 (2025) 15201 Fulltext: PDF;

Registre complet - Registres semblants