Using the GP2X framework for center-of-mass energy precision studies at e+e−e^+e^- Higgs factories

Two channels for measuring the absolute center-of-mass energy, $\sqrt{s}$, and collision beam energies, $E_-$ and $E_+$, are investigated for future $e^+e^-$ Higgs factories. These two channels of DiMuons and Bhabhas are simulated in event generators and a new fast Monte Carlo, GP2X, has been developed to boost the events into the lab frame, and thus include luminosity spectrum effects from beamstrahlung and beam energy spread. GP2X also includes tracker and ECAL detector resolution effects. The performance of GP2X with WHIZARD, as GP2WHIZ, is found to be statistically consistent with iLCSoft while GP2X with KKMC, as GP2KKMC, is consistent within 3\%. We use the design concept for the ILC at $\sqrt{s}=250$GeV and ILD. Taking advantage of ILD's high-precision tracker we find precision near the 1-10 MeV level for all of $\sqrt{s}$ , $E_{\pm}$ for a 100~$\text{fb}^{-1}$ dataset. This is done using a new six parameter Beta distribution convolved with Gaussian fit. A Fourier transform deconvolution method with Savitzky-Golay filtering is used to improve the fitting of detector level data. Feasibility of these measurements will depend on future studies and detector calibration.Comment: 16 pages, 8 figures, 2 tables, LCWS 2023 Proceeding

Center-of-mass energy determination using e+e−e^+e^- to μ+μ−\mu^+\mu^- (γ)(\gamma) events at future e+e−e^+e^- colliders

Methods for measuring the absolute center-of-mass energy, $\sqrt{s}$, and its distribution, are investigated for future $e^+e^-$ Higgs-factory colliders using in situ $e^+e^-$ collisions. We emphasize the potential of an estimator based on the measurement of muon momenta that we denote $\sqrt{s}_p$. It can be determined with high precision in $e^+e^-$ to $\mu^+\mu^-$($\gamma$) events while being sensitive to effects from beam energy spread, beamstrahlung, initial-state radiation (ISR), final-state radiation (FSR), crossing angle, and detector resolution. The measurement precision is enabled by a high-precision low-mass tracker; the reported performance estimates are based on full simulation of the tracker response of the ILD detector concept for the ILC operating at $\sqrt{s} = 250$ GeV. The underlying statistical precision is 1.9 ppm for a 2.0 ab$^{-1}$ dataset at ILC. The ultimate utility will depend largely on how well one can calibrate and maintain the tracker momentum scale.Comment: 30 pages; Submitted to the Proceedings of the US Community Study on the Future of Particle Physics (Snowmass 2021). v3 correct scaling formula in footnote 1 and add corresponding referenc

Potencial do óleo essencial de Thymus vulgaris na qualidade sanitária em sementes de Caesalpinia férrea/ Essential oil potential Thymus vulgaris on the health quality Caesalpinia ferrea seeds

Como na maioria das espécies florestais, a Caesalpinia ferrea vem apresentando problemas fitossanitários, por isso tem-se ampliado pesquisas com o uso de tratamentos alternativos a partir de óleos essenciais como o Thymus vulgaris L., que é responsável pela atividade antimicrobiana e influencia positivamente nos processos fisiológicos das plantas. O objetivo deste estudo foi avaliar a influência do óleo essencial de tomilho sobre a qualidade sanitária e fisiológica em sementes de pau ferro. O experimento foi conduzido no Laboratório de Fitopatologia, localizado na Unidade Acadêmica Especializada em Ciências Agrárias – Universidade Federal do Rio Grande do Norte – UFRN/EAJ, em Macaíba-RN. Para a obtenção e extração do óleo essencial foi feita a coletada de 200 g de folhas frescas e ramos de plantas com 2 e 3 anos de idade do tomilho no horto de plantas medicinais da Universidade Federal do Rio Grande do Norte – UFRN/EAJ, em Macaíba-RN, e através do método de arraste a vapor onde foi obtido o óleo. Posteriormente, foram diluídas em água nas seguintes concentrações: 0, 2, 4, 6, 8 e 10%. As sementes de pau ferro foram adquiridas de matrizes e ao acaso, em seguida, transportadas para o Laboratório de Entomologia, onde foram feitas a avaliação sanitária pelo método Blotter test em temperatura de 25 ± 2 °C e fotoperíodo de 12 h. Após 7 dias, com auxílio de microscópio eletrônico foi feita a identificação dos fungos com ajuda da literatura especializada. De acordo com os resultados obtidos no presente trabalho, verificou-se que o extrato de T. vulgaris em todas as concentrações avaliadas, apresentou diferentes resultados, visto que quando aumenta a concentração do óleo, constatou-se a diminuição na incidência de patógenos. Comprovando que o óleo essencial de T. vulgaris tem ação específica para determinados gêneros fúngicos. A concentração de 8%, do óleo essencial de T. vulgaris obteve as menores porcentagens de Aspergillus sp., Aspergillus niger, Penicillium sp., Alternaria sp., Fusarium sp. e promoveram os maiores desempenhos fisiológicos em plântulas de C. ferrea

HEADS, TAILS, AND SPINES: BOOK ART FROM CCA STUDENTS exhibition documentation

Book art can range from a simple zine to a unique altered book, a folded piece of handmade paper to a handcrafted and letterpress printed edition, and everything in between and beyond. Visual imagery may be generated through photography, illustration, graphic design, textile, and printmaking techniques and may feature poems, stories, and research. Students from all majors come together to learn how to make books in two classes offered by the Printmaking Program at CCA: Bookworks; and Papermaking and the Book. The exhibition highlighted selected book art created in classes taught by Alisa Golden and Rhiannon Alpers during the spring semester of 2017

The International Linear Collider: Report to Snowmass 2021

The International Linear Collider (ILC) is on the table now as a new global energy-frontier accelerator laboratory taking data in the 2030s. The ILC addresses key questions for our current understanding of particle physics. It is based on a proven accelerator technology. Its experiments will challenge the Standard Model of particle physics and will provide a new window to look beyond it. This document brings the story of the ILC up to date, emphasizing its strong physics motivation, its readiness for construction, and the opportunity it presents to the US and the global particle physics community

The International Linear Collider: Report to Snowmass 2021

International audienceThe International Linear Collider (ILC) is on the table now as a new global energy-frontier accelerator laboratory taking data in the 2030s. The ILC addresses key questions for our current understanding of particle physics. It is based on a proven accelerator technology. Its experiments will challenge the Standard Model of particle physics and will provide a new window to look beyond it. This document brings the story of the ILC up to date, emphasizing its strong physics motivation, its readiness for construction, and the opportunity it presents to the US and the global particle physics community

The International Linear Collider: Report to Snowmass 2021

The International Linear Collider (ILC) is on the table now as a new global energy-frontier accelerator laboratory taking data in the 2030s. The ILC addresses key questions for our current understanding of particle physics. It is based on a proven accelerator technology. Its experiments will challenge the Standard Model of particle physics and will provide a new window to look beyond it. This document brings the story of the ILC up to date, emphasizing its strong physics motivation, its readiness for construction, and the opportunity it presents to the US and the global particle physics community