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Tetraquarks at large M and large N
/ Allaman, Héloïse (EPFL, Lausanne, LPTP) ; Ekhterachian, Majid (EPFL, Lausanne, LPTP) ; Nardi, Filippo (EPFL, Lausanne, LPTP) ; Rattazzi, Riccardo (EPFL, Lausanne, LPTP ; New York U., CCPP ; CERN) ; Stelzl, Stefan (EPFL, Lausanne, LPTP)
We study tetraquarks in large $N$ QCD with heavy quarks, in the domain where non-relativistic quantum mechanics offers an adequate approximation. Within the regime of validity of the Born-Oppenheimer approximation, we systematically study and explicitly construct tetraquark states. [...]
arXiv:2407.18298.-
2024-11-06 - 42 p.
- Published in : JHEP 2411 (2024) 034
Fulltext: 2407.18298 - PDF; document - PDF;
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Learning from radiation at a very high energy lepton collider
/ Chen, Siyu (EPFL, Lausanne, LPTP) ; Glioti, Alfredo (EPFL, Lausanne, LPTP) ; Rattazzi, Riccardo (EPFL, Lausanne, LPTP) ; Ricci, Lorenzo (EPFL, Lausanne, LPTP) ; Wulzer, Andrea (EPFL, Lausanne, LPTP ; Padua U., Astron. Dept.)
We study the potential of lepton collisions with about $10\text{ TeV}$ center of mass energy to probe Electroweak, Higgs and Top short-distance physics at the $100\text{ TeV}$ scale, pointing out the interplay with the long-distance ($100\text{ GeV}$) phenomenon of Electroweak radiation. On one hand, we find that sufficiently accurate theoretical predictions require the resummed inclusion of radiation effects, which we perform at the double logarithmic order. [...]
arXiv:2202.10509.-
2022 - 58 p.
- Published in : JHEP 2205 (2022) 180
Fulltext: 2202.10509 - PDF; Publication - PDF;
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3.
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Towards a Muon Collider
/ Accettura, Carlotta (CERN) ; Adams, Dean (Rutherford) ; Agarwal, Rohit (UC, Berkeley (main)) ; Ahdida, Claudia (CERN) ; Aimè, Chiara (Pavia U. ; INFN, Pavia) ; Amapane, Nicola (INFN, Turin ; Turin U.) ; Amorim, David (CERN) ; Andreetto, Paolo (INFN, Padua) ; Anulli, Fabio (INFN, Rome) ; Appleby, Robert (Manchester U.) et al.
A muon collider would enable the big jump ahead in energy reach that is needed for a fruitful exploration of fundamental interactions. The challenges of producing muon collisions at high luminosity and 10 TeV centre of mass energy are being investigated by the recently-formed International Muon Collider Collaboration. [...]
arXiv:2303.08533; FERMILAB-PUB-23-123-AD-PPD-T.-
2023-09-26 - 118 p.
- Published in : Eur. Phys. J. C
- Published in : Eur. Phys. J. C
Fulltext: 2303.08533 - PDF; FERMILAB-PUB-23-123-AD-PPD-T - PDF; Fulltext from Publisher: PDF; External links: JLab Document Server; Fermilab Library Server
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5.
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Muon Collider Physics Summary
/ Aime, Chiara (Pavia U. ; INFN, Pavia) ; Apyan, Aram (Brandeis U.) ; Mahmoud Mohammed, Mohammed Attia (Fayoum U.) ; Bartosik, Nazar (INFN, Turin) ; Batsch, Fabian (CERN) ; Bertolin, Alessandro (INFN, Padua) ; Bonesini, Maurizio (INFN, Italy ; Milan Bicocca U.) ; Bottaro, Salvatore (Pisa, Scuola Normale Superiore) ; Buttazzo, Dario (INFN, Pisa) ; Capdevilla Roldan, Rodolfo Mario (Toronto U.) et al.
The perspective of designing muon colliders with high energy and luminosity, which is being investigated by the International Muon Collider Collaboration, has triggered a growing interest in their physics reach. [...]
arXiv:2203.07256 ; FERMILAB-PUB-22-377-PPD.
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21.
Fermilab Library Server - eConf - Fulltext - Fulltext
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Positive Moments for Scattering Amplitudes
/ Bellazzini, Brando (IPhT, Saclay ; CERN) ; Elias Miró, Joan (ICTP, Trieste) ; Rattazzi, Riccardo (EPFL, Lausanne, LPTP) ; Riembau, Marc (EPFL, Lausanne, LPTP ; Geneva U., Dept. Theor. Phys.) ; Riva, Francesco (Geneva U., Dept. Theor. Phys.)
We find the complete set of conditions satisfied by the forward $2\to2$ scattering amplitude in unitarity and causal theories. These are based on an infinite set of energy dependent quantities -- the arcs -- which are dispersively expressed as moments of a positive measure defined at (arbitrarily) higher energies. [...]
arXiv:2011.00037.-
2021-08-01 - 17 p.
- Published in : Phys. Rev. D 104 (2021) 036006
Fulltext: PDF; Fulltext from publisher: PDF;
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Precision Tests and Fine Tuning in Twin Higgs Models
/ Contino, Roberto (Pisa, Scuola Normale Superiore ; INFN, Pisa) ; Greco, Davide (ITPP, Lausanne) ; Mahbubani, Rakhi (CERN) ; Rattazzi, Riccardo (EPFL, Lausanne, LPTP) ; Torre, Riccardo (ITPP, Lausanne)
We analyze the parametric structure of Twin Higgs (TH) theories and assess the gain in fine tuning which they enable compared to extensions of the Standard Model with colored top partners. Estimates show that, at least in the simplest realizations of the TH idea, the separation between the mass of new colored particles and the electroweak scale is controlled by the coupling strength of the underlying UV theory, and that a parametric gain is achieved only for strongly-coupled dynamics. [...]
CERN-TH-2017-026; arXiv:1702.00797.-
2017-11-29 - 31 p.
- Published in : Phys. Rev. D 96 (2017) 095036
Fulltext: PDF; Preprint: PDF;
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