Bulletin of the American Physical Society
APS April Meeting 2021
Volume 66, Number 5
Saturday–Tuesday, April 17–20, 2021; Virtual; Time Zone: Central Daylight Time, USA
Session H08: Muon Collider Symposium IIILive
|
Hide Abstracts |
Sponsoring Units: DPB DPF Chair: Eric Prebys, UC Davis |
Sunday, April 18, 2021 10:45AM - 11:21AM Live |
H08.00001: Design a detector for a Muon Collider experiment Invited Speaker: Simone Pagan Griso The Muon Collider is becoming more and more a realistic option for the next generation of high energy collider machines. Among the technological challenges in the realization of such a machine, the treatment of the beam-induced background is one of the most critical issues for the detector. Beams with intensity from $10^9$ up to $10^{11}$ muons per bunch are necessary to obtain the desired luminosity, which entails a very high rate of muons decay. This contribution will present a first detector proposal based on strategies that have been studied to mitigate the beam-induced background by exploiting new detectors technologies and at the same time aims to meet the performance requirements needed for a vast physics program. An overview of the expected performance will be discussed, within the context of representative physics processes. [Preview Abstract] |
Sunday, April 18, 2021 11:21AM - 11:33AM Live |
H08.00002: Advancing physics simulations at a Multi-TeV Muon Collider Richard Ruiz, Antonio Costantini, Luca Mantani, Olivier Mattelaer, Fabio Maltoni, Xiaoran Zhao Starting from collider energies of a few TeV, electroweak (EW) vector boson fusion/scattering becomes the dominant production mode at lepton colliders for Standard Model and new physics processes that are relevant to studying the EW sector. In this regime, a muon collider would effectively act as a ``high-luminosity weak boson collider,'' offering a wide range of opportunities to precisely measure EW and Higgs couplings as well as discover new particles. We present recent Monte Carlo developments in the context of the MadGraph5\_aMC@NLO platform that allow for the precise exploration of arbitrary Standard Model and new physics processes. [Preview Abstract] |
Sunday, April 18, 2021 11:33AM - 11:45AM Live |
H08.00003: Studies of Tracker Timing and Granularity for the Muon Collider Environment Hannsjörg Weber, Sergo Jindariani, Ron Lipton, Simone Pagan Griso, Nazar Bartosik, Massimo Casarsa, Lawrence Lee The particle physics community is currently studying collider projects for the post-LHC era. Among those, muon colliders are particularly interesting due to their ability to reach multi-TeV energies in the environment typical for lepton colliders where backgrounds due to other physics processes are significantly lower than at a hadron collider experiment. However, as muons are unstable particles such a machine will be accompanied with technological challenges for a collider experiment: an unprecedented amount of secondary and tertiary decay products will enter the detector volume. The tracker, being closest to the muon beam, is most affected by this ‘beam-induced background’ (BIB). Most reconstructed hits in the tracker are expected to come from the BIB. In this talk, we will discuss how the BIB can impact the occupancy of a tracker at a muon collider experiment and demonstrate how precision timing information and spatial granularity of such a tracker can be used to keep the occupancy at an acceptably low level that will allow proper reconstruction of the tracks. [Preview Abstract] |
Sunday, April 18, 2021 11:45AM - 11:57AM Live |
H08.00004: Muon Ionization Cooling Experiment: Results & Prospects Chris Rogers, Daniel Kaplan A neutrino source based on decay of an intense muon beam would make an ideal source for measurement of neutrino oscillation parameters, and a high-energy muon collider could be the most powerful and cost-effective collider approach in the multi-TeV regime. Muon beams may be created through the decay of pions produced in the interaction of a proton beam with a target. The muons are subsequently accelerated and injected into a storage ring where they decay producing a beam of neutrinos, or collide with counter-rotating antimuons. Cooling of the muon beam would enable more muons to be accelerated resulting in a more intense neutrino source and higher collider luminosity. Ionization cooling is the novel technique by which it is proposed to cool the beam. The Muon Ionization Cooling Experiment collaboration has constructed a section of an ionization cooling cell and used it to provide the first demonstration of ionization cooling. Here the observation of ionization cooling is described. The cooling performance is studied for a variety of beam and magnetic field configurations. The future outlook for muon ionization cooling demonstrations is discussed. [Preview Abstract] |
Sunday, April 18, 2021 11:57AM - 12:09PM Live |
H08.00005: Muon source from positron on target (LEMMA) Mario Antonelli, Maria Enrica Biagini, Manuela Boscolo, Oscar Blanco-Garcia, Andrea Ciarma, Anna Giribono, Susanna Guiducci, Cristina Vaccarezza, Fabio Anulli, Matteo Bauce, Gian Mario Cesarini, Francesco Collamati, Alessandro Variola, Roberto Li Voti, Iryna Chaikovska, Robert Chehab, Alberto Bacci, Illya Drebot, Stefano Luizzo, Pantaleo Raimondi, Donatella Lucchesi, Peter Sievers, Lewis Keller, Nadia Pastrone Recently alternative schemes to produce muon beams using positrons of about 45~GeV interacting on electrons in target have been studied. The production through the process $e^+e^-\to \mu^+\mu^-$ allows very low emittance beams with no needs of cooling. A short review of the studies for a positron driven muon source, known as the Low EMittance Muon Accelerator (LEMMA) concept, will be presented and preliminary performances of the $\mu^+\mu^-$ source will be described. [Preview Abstract] |
Sunday, April 18, 2021 12:09PM - 12:21PM Live |
H08.00006: Composite resonances at a multi-TeV muon collider Ke-Pan Xie, Da Liu, Lian-Tao Wang Multi-TeV vector and fermionic resonances generally exist in the composite Higgs models. In this work we investigate the phenomenology of the resonances at high-energy muon colliders, taking the minimal coset SO(5)/SO(4) as the benchmark model. Various possible production and decay processes are studied, and detailed collider simulations are further performed for the most promising channels. For the vector resonances, the projections are made via the radiative return production followed by di-boson and di-fermion decay channels; while for the fermionic resonances, projections are made for the single and pair productions and the exclusive decay of the charge-5/3 top partner $X_{5/3}$. The interplay between vector and fermionic resonances are also considered. [Preview Abstract] |
Sunday, April 18, 2021 12:21PM - 12:33PM Live |
H08.00007: No-Lose Theorem for Discovering the New Physics of (g − 2)μ at Muon Colliders Rodolfo Capdevilla, David Curtin, Yoni Kahn, Gordan Krnjaic The longstanding muon g − 2 anomaly may indicate the existence of new particles that couple to muons, which could either be light (<∼ GeV) and weakly coupled, or heavy (> 100 GeV) with large couplings. If light new states are responsible, upcoming intensity frontier experiments will discover further evidence of new physics. However, if heavy particles are responsible, many candidates are beyond the reach of existing colliders. Using a model-exhaustive approach we show that, if the (g − 2)µ anomaly is confirmed and no explanation is found at low-energy experiments, a high-energy muon collider program at the TeV - 10 TeV scale is guaranteed to make fundamental discoveries about our universe, either directly discovering new BSM states that account for g-2, or detecting indirect signatures of their existence while proving that their mass is close to the 100 TeV upper bound from perturbative unitarity. The latter is only theoretically consistent if the universe if fine-tuned and the flavour problem of the SM is solved non-minimally. In any scenario, a muon collider program is guaranteed to make fundamental discoveries about our universe. Based on 2006.16277 and ongoing investigations. [Preview Abstract] |
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700