Beyond Colours and Flavours on Supercomputers

Projektinformationen

BCFS

ID Finanzhilfevereinbarung: 894103

DOI 10.3030/894103

Das Projekt endete am 30 Juni 2022

EK-Unterschriftsdatum 3 August 2020

Startdatum 1 Oktober 2020

Enddatum 30 September 2022

Finanziert unter

• EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions

Gesamtkosten € 207 312,00

EU-Beitrag € 207 312,00

Koordiniert durch

SYDDANSK UNIVERSITET
Denmark

Projektbeschreibung

Entwicklung von Präzisionsgitter-QCD-Berechnungen

Die Gitter-Quantenchromodynamik (QCD) simuliert die Wechselwirkung zwischen Quarks und Gluonen. Gitter-QCD-Berechnungen werden auf den schnellsten Computern der Welt durchgeführt. Das EU-finanzierte Projekt BCFS wird Präzisionsgitter-QCD-Berechnungen entwickeln, um die Suche nach neuer Physik über das Standardmodell hinaus zu unterstützen. Es werden Anomalien wie das anomale magnetische Moment der Myon- und Lepton-Flavour -Universalitätsprüfungen in semi-leptonischen B-Meson-Zerfällen behandelt. Außerdem wird die Suche nach neuer Physik durch die Berechnung hadronischer Eingaben ergänzt, welche die Bestimmung von Elementen der Cabibbo-Kobayashi-Maskawa-Matrix ermöglichen und dadurch Präzisionstests des Standardmodells ermöglichen. Insgesamt wird das Projekt wichtige Informationen für die Suche nach physikalischen Theorien liefern, die über das Standardmodell hinausgehen und für die Nutzung großer laufender Experimente am großen Hadronen-Speicherring erforderlich sind.

Ziel

We propose precision lattice QCD computations aiding the search for new physics beyond the Standard Model. In particular, we will address currently observed anomalies such as those displayed in the anomalous magnetic moment of the muon and lepton flavour universality tests in semi-leptonic B meson decays. We will further supplement searches for new physics through the computation of hadronic inputs, which combined with experimental results allow the determination of elements of the Cabibbo-Kobayashi-Maskawa matrix, thereby providing precision tests of the standard model.

We will compute a large set of hadronic form factors of semi-leptonic B(s) and D(s) meson decays including pseudo-scalar and vector final
states. State-of-the-art computations of these have two major shortcomings: the use of effective theories for the b-quark, and the treatment of vector final states as QCD-stable particles. We will eliminate the former of these by utilising very fine lattices which allow for the direct simulation of the b-quark near its physical mass. The latter will be addressed by merging specialist expertise in the computation of such form factors with that of hadronic scattering processes. This will result in the first calculation that takes the unstable nature of the vector final states in QCD into account. This is of paramount importance in order to address the observed anomalies in the B to D* and B to K* decays. We will compute the full basis of possible currents thereby providing standard model predictions as well as inputs for tests of beyond the standard model theories. Further, we will use the approach of massive QED in lattice QCD computations to provide an independent cross check of the electromagnetic corrections to the hadronic vacuum polarisation. This work will provide vital inputs in searches for physics beyond the standard model which are needed to fully exploit large ongoing experiments at the Large Hadron Collider and at facilities in Japan and the US.

Wissenschaftliches Gebiet

• natural sciences › physical sciences › theoretical physics › particle physics › leptons
• natural sciences › physical sciences › theoretical physics › particle physics › particle accelerator
• engineering and technology › materials engineering › colors
• natural sciences › mathematics › pure mathematics › discrete mathematics › mathematical logic
• engineering and technology › electrical engineering, electronic engineering, information engineering › electronic engineering › computer hardware › supercomputers

Schlüsselbegriffe

• Quark Flavour Physics
• anomalous magnetic moment
• Lattice Quantum Field Theory
• Supercomputing

Programm/Programme

• H2020-EU.1.3. - EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions Main Programme
• H2020-EU.1.3.2. - Nurturing excellence by means of cross-border and cross-sector mobility

Thema/Themen

• MSCA-IF-2019 - Individual Fellowships

Aufforderung zur Vorschlagseinreichung

H2020-MSCA-IF-2019

Finanzierungsplan

MSCA-IF - Marie Skłodowska-Curie Individual Fellowships (IF)

Koordinator

SYDDANSK UNIVERSITET

• Netto-EU-Beitrag: € 207 312,00
• Adresse: CAMPUSVEJ 55 ; 5230 Odense M ; Dänemark
• Region: Danmark › Syddanmark › Fyn
• Aktivitätstyp: Higher or Secondary Education Establishments
• Gesamtkosten: € 207 312,00