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CERN Accelerating science

CERN-TH

Najnovije dodano:
2021-04-10
04:18
Swampland Conjectures and Infinite Flop Chains / Brodie, Callum R. ; Constantin, Andrei ; Lukas, Andre ; Ruehle, Fabian
We investigate swampland conjectures for quantum gravity in the context of M-theory compactified on Calabi-Yau threefolds which admit infinite sequences of flops. [...]
arXiv:2104.03325 ; CERN-TH-2021-051.
- 9 p.
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2021-04-09
04:02
The Eikonal Approach to Gravitational Scattering and Radiation at $\mathcal O(G^3)$ / Di Vecchia, Paolo (Bohr Inst. ; Nordita ; Royal Inst. Tech., Stockholm) ; Heissenberg, Carlo (Nordita ; Royal Inst. Tech., Stockholm ; Uppsala U.) ; Russo, Rodolfo (Queen Mary, U. of London) ; Veneziano, Gabriele (CERN ; College de France)
Using $\mathcal N=8$ supergravity as a theoretical laboratory, we extract the 3PM gravitational eikonal for two colliding massive scalars from the classical limit of the corresponding elastic two-loop amplitude. [...]
arXiv:2104.03256 ; CERN-TH-2021-046 ; NORDITA 2021-028 ; QMUL-PH-21-17.
- 88 p.
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2021-04-09
04:00
Consequences of chirally enhanced explanations of $(g-2)_\mu$ for $h\to \mu\mu$ and $Z\to \mu\mu$ / Crivellin, Andreas (CERN ; PSI, Villigen ; Zurich U.) ; Hoferichter, Martin (U. Bern, AEC)
With the long-standing tension between experiment and Standard-Model (SM) prediction in the anomalous magnetic moment of the muon $a_\mu$ recently reaffirmed by the Fermilab experiment, the crucial question becomes which other observables could be sensitive to the underlying physics beyond the SM to which $a_\mu$ may be pointing. [...]
arXiv:2104.03202 ; CERN-TH-2021-050 ; PSI-PR-21-04 ; ZU-TH 14/21.
- 10 p.
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2021-04-03
04:25
Characters of irrelevant deformations / Datta, Shouvik (CERN) ; Jiang, Yunfeng (CERN ; Southeast U., Nanjing)
We analyse the $T\bar{T}$ deformation of 2d CFTs in a special double-scaling limit, of large central charge and small deformation parameter. [...]
arXiv:2104.00281 ; CERN-TH-2021-044.
- 20 p.
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2021-04-03
04:25
D-branes and Orbit Average / Yang, Peihe (Tianjin U.) ; Jiang, Yunfeng (CERN ; Southeast U., Nanjing) ; Komatsu, Shota (CERN ; Princeton, Inst. Advanced Study) ; Wu, Jun-Bao (Tianjin U. ; PCFT, Hefei ; Peking U., CHEP)
We study correlation functions of D-branes and a supergravity mode in AdS, which are dual to structure constants of two sub-determinant operators with large charge and a BPS single-trace operator. [...]
arXiv:2103.16580 ; CERN-TH-2021-043 ; USTC-ICTS/PCFT-21-15.
- 52 p.
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2021-04-01
04:35
Three-Point Functions in ABJM and Bethe Ansatz / Yang, Peihe (Tianjin U.) ; Jiang, Yunfeng (CERN ; Southeast U., Nanjing) ; Komatsu, Shota (CERN ; Princeton, Inst. Advanced Study) ; Wu, Jun-Bao (Tianjin U. ; PCFT, Hefei ; Peking U., CHEP)
We develop an integrability-based framework to compute structure constants of two sub-determinant operators and a single-trace non-BPS operator in ABJM theory in the planar limit. [...]
arXiv:2103.15840 ; CERN-TH-2021-042 ; USTC-ICTS/PCFT-21-14.
- 53 p.
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2021-03-31
04:11
Renormalization of the topological charge density in QCD with dimensional regularization / Lüscher, Martin (CERN ; U. Bern, AEC) ; Weisz, Peter (Munich, Max Planck Inst.)
To all orders of perturbation theory, the renormalization of the topological charge density in dimensionally regularized QCD is shown to require no more than an additive renormalization proportional to the divergence of the flavour-singlet axial current. [...]
arXiv:2103.15440 ; CERN-TH-2021-041 ; MPP-2021-38.
- 24 p.
Preprint

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2021-03-31
04:10
Lattice determination of $I= 0$ and 2 $\pi\pi$ scattering phase shifts with a physical pion mass / Blum, T. ; Boyle, P.A. ; Bruno, M. ; Christ, N.H. ; Hoying, D. ; Kelly, C. ; Lehner, C. ; Mawhinney, R.D. ; Meyer, A.S. ; Murphy, D.J. et al.
Phase shifts for $s$-wave $\pi\pi$ scattering in both the $I=0$ and $I=2$ channels are determined from a lattice QCD calculation performed on 741 gauge configurations obeying G-parity boundary conditions with a physical pion mass and lattice size of $32^3\times 64$. [...]
arXiv:2103.15131 ; CERN-TH-2021-039.
- 88 p.
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2021-03-25
04:02
Gravitational Effective Field Theory Islands, Low-Spin Dominance, and the Four-Graviton Amplitude / Bern, Zvi (UCLA) ; Kosmopoulos, Dimitrios (UCLA) ; Zhiboedov, Alexander (CERN)
We analyze constraints from perturbative unitarity and crossing on the leading contributions of higher-dimension operators to the four-graviton amplitude in four spacetime dimensions, including constraints that follow from distinct helicity configurations. [...]
arXiv:2103.12728 ; CERN-TH-2021-035.
- 123 p.
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2021-03-24
04:31
Correlating Non-Resonant Di-Electron Searches at the LHC to the Cabibbo-Angle Anomaly and Lepton Flavour Universality Violation / Crivellin, Andreas (Zurich U. ; PSI, Villigen) ; Manzari, Claudio Andrea (Zurich U. ; PSI, Villigen) ; Montull, Marc (Zurich U. ; PSI, Villigen)
In addition to the existing strong indications for lepton flavour university violation (LFUV) in low energy precision experiments, CMS recently released an analysis of non-resonant di-lepton pairs which could constitute the first sign of LFUV in high-energy LHC searches. [...]
arXiv:2103.12003 ; CERN-TH-2021-036 ; PSI-PR-21-03 ; ZU-TH 11/21.
- 6 p.
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