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TH Preprints

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2024-05-16
04:22
In Search of the Biggest Bangs since the Big Bang / Ellis, John ; Fairbairn, Malcolm ; Urrutia, Juan ; Vaskonen, Ville
Many galaxies contain supermassive black holes (SMBHs), whose formation and history raise many puzzles. [...]
KCL-PH-TH/2024-27 ; CERN-TH-2024-058 ; AION-REPORT/2024-04 ; arXiv:2405.08522. -
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2024-05-16
04:17
Status of Dark Photons / Cline, James M. (CERN ; McGill U.)
I review recent developments in the field of dark photons-here taken to be U(1) gauge bosons with mass less than the Z-including both kinetically mixed vectors and those that couple to anomaly-free U(1)'s. [...]
CERN-TH-2024-060 CERN-TH-2024-060 CERN-TH-2024-060 CERN-TH-2024-060 CERN-TH-2024-060 CERN-TH-2024-060CERN-TH-2024-060 CERN-TH-2024-060 ; arXiv:2405.08534. - 8 p.
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2024-05-16
04:17
Lepton-Pair Scattering With an Off-Shell and an On-Shell Photon at Two Loops in Massless QED / Zoia, Simone (CERN)
I present the computation of the two-loop amplitudes for the scattering of a lepton pair with an off-shell and an on-shell photon in massless QED. [...]
CERN-TH-2024-059 ; arXiv:2405.08750. - 4 p.
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2024-05-16
04:17
Giving a $KO$ to 8D Gauge Anomalies / Torres, Ethan (CERN)
In \cite{Garcia-Etxebarria:2017crf}, it was found that the system of $k$ D7-branes probing an $O7^+$-plane suffers from an $\mathfrak{sp}(k)$ gauge anomaly when $k>1$. [...]
CERN-TH-2024-054 ; arXiv:2405.08809. - 16 p.
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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. [...]
CERN-TH-2024-055 ; arXiv:2405.04569. - 27 p.
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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.)
We present results for the leptonic decay constants of the D and D$_{\rm s}$ mesons from $N_{\rm f}=2+1$ lattice QCD. [...]
CERN-TH-2024-052 ; MITP-24-047 ; MS-TP-24-09 ; arXiv:2405.04506. - 44 p.
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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. [...]
TIF-UNIMI-2024-3 ; CERN-TH-2024-047 ; arXiv:2405.00612. - 26 p.
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2024-05-02
04:24
AGN constraints on neutrino-dark matter scattering / Cline, James M. (CERN ; McGill U.)
The IceCube collaboration has identified neutrinos of energy $\sim 10-100$ TeV from the blazar TXS 0506+056 and the active galaxy NGC 1068, which must have traveled through a dense dark matter spike surrounding the supermassive black holes that power the galactic nuclei. [...]
arXiv:2404.19471 ; CERN-TH-2024-053. - 1 p.
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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. [...]
KCL-PH-TH/2024-18 ; CERN-TH-2024-046 ; arXiv:2404.15937. - 24 p.
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2024-04-27
05:39
Benchmark of deep-inelastic-scattering structure functions at $\mathcal{O}(\alpha_s^3)$ / Bertone, Valerio (IRFU, Saclay) ; Karlberg, Alexander (CERN)
We present a benchmark comparison of the massless inclusive deep-inelastic-scattering (DIS) structure functions up to $\mathcal{O}(\alpha_s^3)$ in perturbative QCD. [...]
arXiv:2404.15711 ; CERN-TH-2024-018. - 21 p.
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