Open Position Research positions for the Collider Physics group within the framework of the Recovery, Transformation and Resilience Plan – Funded by the European Union – Plan Complementario

About IFAE

The Institut de Física d’Altes Energies (IFAE) is a public consortium of the Generalitat de Catalunya, the Autonomous Government of Catalonia, and the Universitat Autònoma de Barcelona (UAB, a public university) whose main objective is to carry out research and to contribute to the development of high energy physics from a theoretical, experimental and technological point of view. IFAE has the status of a “University Institute" attached to the UAB and its premises are within the campus of the University.

About the Collider Physics group

The Collider Physics group at IFAE is focused on the scientific exploitation of the Large Hadron Collider (LHC) at CERN. This is research line that started in 1992, when IFAE joined the ATLAS Collaboration at the LHC. The ATLAS detector was designed to explore a wide range of phenomena predicted by the Standard Model (SM) of particle physics, while also maximizing their sensitivity to beyond-the-SM processes. It is expected that these investigations will provide answers to open questions in our description of Nature such as the origin of the particle masses, the mechanism for electroweak symmetry breaking, or the presence of a new underlying symmetry (e.g., supersymmetry) that could explain the nature of dark matter or the unification of forces at very high energies. The design, construction and operation of the ATLAS detector, online event selection, event reconstruction and data analysis, all require world-wide efforts, which are reflected in the size of the ATLAS Collaboration, formed by 181 institutions from 42 countries. Its members are a team of physicists, engineers, technicians, students and support staff from around the world. It is one of the largest collaborative efforts ever attempted in science, with over 5500 members and almost 3000 scientific authors.

With a 30-year involvement in the ATLAS experiment, IFAE has played mayor roles in the construction and operation of the Tile Hadronic Calorimeter (TileCal), the preparation of the High-Level Trigger infrastructure and physics selection algorithms, and the physics analyses. IFAE currently maintains a strong presence in the ATLAS experiment, with major responsibilities on the maintenance and operation of the TileCal hadronic calorimeter and the Level-1 Topological Trigger system, and participates in the Pixel detector upgrade. The group has also developed an exciting and broad research program that includes precision measurements of the top quark (e.g., four-top-quark production) and the Higgs boson (e.g., top-Higgs Yukawa coupling), and searches for new phenomena beyond the Standard Model (e.g., supersymmetry, vector-like fermions, leptoquarks, additional light or heavy Higgs bosons, etc). During Run 3 of the LHC, which started in July 2022 and will last till the end of 2025, the centre-of-mass energy of proton-proton collisions has been increased to 13.6 TeV and the total delivered integrated luminosity will reach ~250 fb-1. With the increase of both energy and integrated luminosity with respect to Run 2, more stringent tests of the SM and more sensitive searches for new phenomena will be possible. IFAE is in a privileged position to analyse the ATLAS data, with strong synergies with IFAE’s Theory Division and significant computing resources from the PIC computing centre.

Required skills and evaluation criteria

The successful candidate is expected to have:

• A Bachelor’s degree in Physics and a Master’s degree in Theoretical Physics (Particle Physics and Cosmology)
• Pro-active attitude and good communication skills
• Fluent English skills
• Excellent programming and computing skills
• Experience in machine learning techniques
• Experience in the search for tta(->bb) production using data from the ATLAS experiment

The evaluation criteria and their weighting for the submitted applications will be the following:

What will be your role?

The candidate will participate in the analysis of associated production of a top-antitop-quark pair and a light pseudoscalar decaying into a bottom-antibottom-quark pair, tta(🡪bb), using the full Run 2 dataset collected with the ATLAS detector. The time estimated to fulfil the tasks, leading to the publication of this search, is six months.

Offered contract:

A full-time position (40 hours per week), with a temporary contract. The duration of the contract will be 6 months. There will be a 1-month trial period. Flexible hours. Work with interesting experimental science. Trips to unique scientific infrastructures. Opportunity to gain experience by learning first-hand. Personal growth, innovation and daily learning. The position will correspond to “Research Technician” within the professional categories of the IFAE. The salary will be in accordance with the experience and qualifications within the corresponding category range.

Application and Selection process:

Applications should be submitted to Dr. Aurelio Juste (aurelio.juste.rozas@cern.ch ) and rrhh@ifae.es stating the job reference (IFAE2024/31_TECNICAL) as the subject of the message. The mail should include their updated CV, including a full list of University grades, and arrange to have two letters of reference. Sending CVs to the above addresses implies consent to the IFAE’s legal warning on data privacy.

The application must contain a personal identification number (DNI, NIE or passport) in order to proceed to the verification of absence of conflict of interest required by Recovery and Resilience Mechanism of the Spanish Government.

IFAE is an equal opportunity employer committed to diversity in the workplace and social integration of people with a disability. We welcome applications from all qualified candidates. People from groups that are typically underrepresented in the labour market in general and in Science and Engineering in particular, such as women, minorities, or people with a disability, are particularly encouraged to apply.

A Selection Committee will evaluate the received applications. If more than one candidate seems equally suitable for the position, the Selection Committee will arrange an on-line interview with each one of them as part of the Selection process.

In compliance with article 121 of the Spanish Public Sector Legal Regime Act, staff with a pre-existing relationship with the Consortium administration (Generalitat de Catalunya and Universitat Autònoma de Barcelona) will have priority in the awarding of the position.

You may contact Dr. Aurelio Juste (aurelio.juste.rozas@cern.ch ) for any questions related to this job opening.

Funding Statement