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TH Preprints

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2022-08-10
07:39
Overcoming exponential scaling with system size in Trotter-Suzuki implementations of constrained Hamiltonians: 2+1 U(1) lattice gauge theories / Grabowska, Dorota M. (CERN) ; Kane, Christopher ; Nachman, Benjamin ; Bauer, Christian W.
For many quantum systems of interest, the classical computational cost of simulating their time evolution scales exponentially in the system size. [...]
arXiv:2208.03333 ; CERN-TH-2022-133. - 9 p.
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2022-08-09
05:03
A new constraint on primordial lepton flavour asymmetries / Domcke, Valerie (CERN ; EPFL, Lausanne, LPPC) ; Kamada, Kohei ; Mukaida, Kyohei ; Schmitz, Kai ; Yamada, Masaki
A chiral chemical potential present in the early universe can source helical hypermagnetic fields through the chiral plasma instability. [...]
arXiv:2208.03237 ; CERN-TH-2022-134 ; RESCEU-13/22 ; KEK-TH-2441 ; MS-TP-22-23 ; TU-1164. - 4 p.
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2022-07-30
04:24
NNLO interpolation grids for jet production at the LHC / Britzger, D. ; Gehrmann-De Ridder, A. ; Gehrmann, T. ; Glover, E.W.N. ; Gwenlan, C. ; Huss, A. ; Pires, J. ; Rabbertz, K. ; Savoiu, D. ; Sutton, M.R. et al.
Fast interpolation-grid frameworks facilitate an efficient and flexible evaluation of higher-order predictions for any choice of parton distribution functions or value of the strong coupling $\alpha_s$. [...]
arXiv:2207.13735 ; CERN-TH-2022-125 ; IPPP/22/53 ; MPP-2022-80 ; ZU-TH 34/22. - 19 p.
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2022-07-29
04:07
A parton branching with transverse momentum dependent splitting functions / Hautmann, F. (Antwerp U. ; CERN ; Oxford U.) ; Hentschinski, M. (Americas U., Puebla) ; Keersmaekers, L. (Antwerp U.) ; Kusina, A. (Cracow, INP) ; Kutak, K. (Cracow, INP) ; Lelek, A. (Antwerp U.)
Off-shell, transverse-momentum dependent splitting functions can be defined from the high-energy limit of partonic decay amplitudes. [...]
arXiv:2205.15873 ; CERN-TH-2022-087 ; IFJPAN-IV-2022-8. - 8 p.
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2022-07-28
09:20
Ultra-Light Pion (ULP) and Baryon WIMPzilla Dark Matter / Maleknejad, Azadeh (CERN) ; McDonough, Evan (Winnipeg U.)
We consider a dark confining gauge theory with millicharged Ultra-Light Pions (ULP) and heavy baryons as dark matter candidates. [...]
arXiv:2205.12983 ; CERN-TH-2022-086. - 16 p.
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2022-07-25
04:31
Solving Scattering in N=4 Super-Yang-Mills Theory / Arkani-Hamed, Nima (Princeton, Inst. Advanced Study) ; Dixon, Lance J. (SLAC) ; McLeod, Andrew J. (CERN ; UCLA) ; Spradlin, Marcus (Brown U.) ; Trnka, Jaroslav (UC, Davis, QMAP) ; Volovich, Anastasia (Brown U.)
As part of the Snowmass community planning exercise, we highlight an ongoing program of research into the structure of scattering amplitudes in $N$ = 4 super-Yang-Mills theory, particularly in the planar limit of a large number of colors. [...]
arXiv:2207.10636 ; CERN-TH-2022-123 ; SLAC-PUB-17692. - 31 p.
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2022-07-23
04:02
Constructing Compact Ansätze for Scattering Amplitudes / De Laurentis, Giuseppe (Freiburg U.) ; Page, Ben (CERN)
In these proceedings, we discuss the recent approach of Ref. [...]
arXiv:2207.10125 ; CERN-TH-2022-124 ; FR-PHENO-2022-08. - 11 p.
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2022-07-22
09:06
Dark Matter Constraints from the Eccentric Supermassive Black Hole Binary OJ 287 / Alachkar, Ahmad (King's Coll. London) ; Ellis, John (King's Coll. London ; CERN ; NICPB, Tallinn) ; Fairbairn, Malcolm (King's Coll. London)
OJ 287 is a binary system containing a ~ 18 billion solar mass primary black hole accompanied by a ~ 150 million solar mass secondary black hole in an eccentric orbit, which triggers electromagnetic flares twice in every ~ 12 year orbital period when it traverses the accretion disk of the primary. [...]
arXiv:2207.10021 ; KCL-PH-TH/2022-40 ; CERN-TH-2022-115. -
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2022-07-20
04:24
The Diagrammatic Coaction / Abreu, Samuel (CERN ; Edinburgh U.) ; Britto, Ruth (Trinity Coll., Dublin) ; Duhr, Claude (Bonn U.) ; Gardi, Einan (Edinburgh U.) ; Matthew, James (Edinburgh U.)
The diagrammatic coaction underpins the analytic structure of Feynman integrals, their cuts and the differential equations they admit. [...]
arXiv:2207.07843 ; CERN-TH-2022-122 ; BONN-TH-2022-18. - 19 p.
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2022-07-19
04:48
Zero-jettiness beam functions at N$^3$LO / Behring, Arnd (KIT, Karlsruhe, TTP)
The zero-jettiness beam functions describe collinear emissions from initial state legs and appear in the factorisation theorem for cross sections in the limit of small zero-jettiness. [...]
arXiv:2207.07630 ; CERN-TH-2022-120 ; TTP22-047 ; P3H-22-075. - 12 p.
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