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Precision tests of the Standard Model using Beauty to Charm decays

Project description

Matter–antimatter asymmetry in charmed and beauty mesons

Although the Standard Model (SM) of particle physics is one of the most successful theories in physics, it fails to provide an explanation for the matter–antimatter asymmetry observed in the universe. The EU-funded Beauty2Charm project will search for new physics beyond the Standard Model using particle decays that violate charge–parity (CP) symmetry, namely beauty mesons decaying to charmed mesons. The relations between ten decay modes can be measured in a coherent manner in the Large Hadron Collider beauty (LHCb) experiment. To test these relations, researchers will measure ten branching ratios and conduct eight analyses sensitive to CP violation using data collected by the LHCb experiment. CP asymmetries serve as irrefutable evidence for the presence of new physics.

Objective

The present matter-antimatter asymmetry of the universe cannot be explained by the Standard Model (SM) of particle physics. I propose to look for the presence of new physics beyond the SM in Charge-Parity (CP) asymmetries using beauty mesons decaying to charmed mesons (Beauty2Charm). A unique feature of these decays is that the SM contribution can be precisely measured using relations between ten decay modes all of which can be measured with in a coherent manner at a single experiment: LHCb at the Large Hadron Collier (LHC). The proposal will make measurements of ten branching ratios and eight analyses sensitive to CP violation using data collected by LHCb in order to test these relations. CP asymmetries larger than a few percent would be an unambiguous signal of the presence of new physics. In order to make these measurements at the required level of precision, I will lead a major upgrade to the way that the LHCb experiment selects proton proton collisions and for which I have laid the conceptual foundations. Real-Time Analysis will enable a dramatic increase in the the efficiency and signal yield of the decay modes relevant to this proposal, and reduce systematic uncertainties. To test and commission this upgrade I will lead the first ever measurements of beauty hadron production using final states without leptons. The experience gained in the commissioning phase will result in increased efficiencies for the CP sensitive channels leading to the world's most precise measurements and world-leading sensitivity to new physics.

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Topic(s)

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Funding Scheme

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ERC-STG - Starting Grant

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Call for proposal

Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.

(opens in new window) ERC-2019-STG

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Host institution

THE UNIVERSITY OF MANCHESTER
Net EU contribution

Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.

€ 1 450 020,00
Address
OXFORD ROAD
M13 9PL Manchester
United Kingdom

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Region
North West (England) Greater Manchester Manchester
Activity type
Higher or Secondary Education Establishments
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Total cost

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

€ 1 450 020,00

Beneficiaries (1)

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