Corvino, Michele
(2020)
Novel technique to measure Lepton Universality ratio RK at NA62.
[Tesi di dottorato]
| Tipologia del documento: |
Tesi di dottorato
|
| Lingua: |
English |
| Titolo: |
Novel technique to measure Lepton Universality ratio RK at NA62 |
| Autori: |
| Autore | Email |
|---|
| Corvino, Michele | michele.corvino@cern.ch |
|
| Data: |
2020 |
| Istituzione: |
Università degli Studi di Napoli Federico II |
| Dipartimento: |
Fisica |
| Dottorato: |
Fisica |
| Ciclo di dottorato: |
32 |
| Coordinatore del Corso di dottorato: |
| nome | email |
|---|
| Capozziello, Salvatore | [non definito] |
|
| Tutor: |
| nome | email |
|---|
| Ambrosino, Fabio | [non definito] |
|
| Data: |
2020 |
| Parole chiave: |
lepton universality, NA62 experiment, kaon physics |
| Settori scientifico-disciplinari del MIUR: |
Area 02 - Scienze fisiche > FIS/01 - Fisica sperimentale |
[error in script]
[error in script]
| Depositato il: |
31 Mar 2020 16:20 |
| Ultima modifica: |
17 Nov 2021 10:48 |
| URI: |
http://www.fedoa.unina.it/id/eprint/12992 |
Abstract
Lepton universality is one of the key properties of the Standard Model (SM) and a clear indication of its violation could lead to the discovery of new physics. In kaon sector, lepton universality is tested measuring the ratio $R_K = \Gamma(K^+ \to e^+ \nu (\gamma))/\Gamma(K^+ \to \mu^+ \nu (\gamma)), which has a very precise theoretical estimation.
In this work, the measurement of R_K using a subsample of data collected by NA62 experiment at CERN is presented. A new technique has been develope, collecting both sample with the same trigger stream and extracting BR(K^+ \to \mu^+ \nu (\gamma)) from events with muon decays in flight in order to minimize systematic effects.
This new approach will pave the way to reach
experimentally the same precision of the theoretical prediction.
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