2022-07-13
04:01 |
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2022-06-09
04:08 |
Cosmology with the Redshift-Space Galaxy Bispectrum Monopole at One-Loop Order
/ Philcox, Oliver H.E. (Princeton U., Astrophys. Sci. Dept. ; Princeton, Inst. Advanced Study) ; Ivanov, Mikhail M. (Princeton, Inst. Advanced Study) ; Cabass, Giovanni (Princeton, Inst. Advanced Study) ; Simonović, Marko (CERN) ; Zaldarriaga, Matias (Princeton, Inst. Advanced Study) ; Nishimichi, Takahiro (Kyoto U., Yukawa Inst., Kyoto ; Tokyo U., IPMU)
We study the cosmological information content of the redshift-space galaxy bispectrum monopole at one-loop order in perturbation theory. We incorporate all effects necessary for comparison to data: fourth-order galaxy bias, infrared resummation (accounting for the non-linear evolution of baryon acoustic oscillations), ultraviolet counterterms, non-linear redshift-space distortions, stochastic contributions, projection, and binning effects. [...]
arXiv:2206.02800; CERN-TH-2022-092; YITP-22-60.-
2022-08-15 - 32 p.
- Published in : Phys. Rev. D 106 (2022) 043530
Fulltext: PhysRevD.106.043530 - PDF; 2206.02800 - PDF;
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2022-05-19
09:38 |
Single Photon Production at Hadron Colliders at NNLO QCD with Realistic Photon Isolation
/ Chen, X. (KIT, Karlsruhe, TP ; KIT, Karlsruhe, IAP) ; Gehrmann, T. (Zurich U.) ; Glover, E.W.N. (Durham U., IPPP) ; Höfer, M. (Munich U., ASC) ; Huss, A. (CERN) ; Schürmann, R. (Zurich U.)
Isolated photons at hadron colliders are defined by permitting only a limited amount of hadronic energy inside a fixed-size cone around the candidate photon direction. This isolation criterion admits contributions from collinear photon radiation off QCD partons and from parton-to-photon fragmentation processes. [...]
arXiv:2205.01516; ZU-TH 16/22; KA-TP-12-2022; P3H-22-044; IPPP/22/30; IPPP/22/30,
CERN-TH-2022-072; LMU-ASC 17/22; CERN-TH-2022-072.-
2022-08-05 - 43 p.
- Published in : JHEP 08 (2022) 094
Fulltext: 2205.01516 - PDF; document - PDF;
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2022-05-12
04:52 |
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2022-05-10
04:20 |
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2022-05-07
04:12 |
On the NLO QCD Corrections to Gluon-Initiated ZH Production
/ Degrassi, Giuseppe (CERN ; Rome III U. ; INFN, Rome3) ; Gröber, Ramona (Padua U. ; INFN, Padua) ; Vitti, Marco (Rome III U. ; INFN, Rome3) ; Zhao, Xiaoran (Rome III U. ; INFN, Rome3)
We compute the QCD corrections at next-to-leading order for the process $gg \rightarrow ZH$, including both the virtual two-loop terms and real-emission contributions. The two-loop box diagrams in the virtual corrections are approximated analytically over the complete phase space, combining the results of an expansion in the limit of small transverse momentum and an expansion in the regime of high energy. [...]
arXiv:2205.02769; CERN-TH-2022-079.-
2022-08-01 - 19 p.
- Published in : JHEP 2208 (2022) 009
Fulltext: 2205.02769 - PDF; document - PDF;
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2022-05-04
07:38 |
Charge transfer between rotating complex scalar fields
/ Domcke, Valerie (CERN ; EPFL, Lausanne, LPPC) ; Harigaya, Keisuke (CERN ; Tokyo U., IPMU) ; Mukaida, Kyohei (KEK, Tsukuba ; Sokendai, Tsukuba)
We consider the transfer of a $U$(1) charge density between Bose-Einstein condensates of complex scalar fields coupled to a thermal bath, focusing on the case of a homogeneous Affleck-Dine field transmitting the charge stored in its angular motion to an axion field. We demonstrate that in the absence of additional symmetries this charge transfer, aided by cosmic expansion as well as the thermal effective potential of the Affleck-Dine field, can be very efficient. [...]
arXiv:2205.00942; CERN-TH-2022-075; KEK-TH-2422.-
2022-08-23 - 31 p.
- Published in : JHEP 2208 (2022) 234
Fulltext: 2205.00942 - PDF; document - PDF;
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2022-04-28
04:03 |
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2022-04-23
10:51 |
Constraints on multifield inflation from the BOSS galaxy survey
/ Cabass, Giovanni (Princeton, Inst. Advanced Study) ; Ivanov, Mikhail M. (Princeton, Inst. Advanced Study) ; Philcox, Oliver H.E. (Princeton U., Astrophys. Sci. Dept. ; Princeton, Inst. Advanced Study) ; Simonović, Marko (CERN) ; Zaldarriaga, Matias (Princeton, Inst. Advanced Study)
We use redshift-space galaxy clustering data from the BOSS survey to constrain local primordial non-Gaussianity (LPNG). This is of particular importance due to the consistency relations, which imply that a detection of LPNG would rule out all single-field inflationary models. [...]
arXiv:2204.01781; CERN-TH-2022-055.-
2022-08-03 - 20 p.
- Published in : Phys. Rev. D 106 (2022) 043506
Fulltext: PDF;
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2022-04-22
10:31 |
NNLO QCD corrections in full colour for jet production observables at the LHC
/ Chen, X. (KIT, Karlsruhe, TP ; KIT, Karlsruhe, IAP) ; Gehrmann, T. (Zurich U.) ; Glover, E.W. N. (Durham U., IPPP) ; Huss, A. (CERN) ; Mo, J. (Zurich U.)
Calculations for processes involving a high multiplicity of coloured particles often employ a leading colour approximation, where only the leading terms in the expansion of the number of colours $N_c$ and the number of flavours $n_f$ are retained. This approximation of the full colour result is motivated by the $1/N_c^2$ suppression of the first subleading terms and by the increasing complexity of including subleading colour contributions to the calculation. [...]
arXiv:2204.10173; ZU-TH 11/22; KA-TP-07-2022; IPPP/22/20; P3H-22-037; CERN-TH-2022-067.-
2022-09-05 - 32 p.
- Published in : JHEP 2209 (2022) 025
Fulltext: 2204.10173 - PDF; document - PDF;
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