Go to the content. | Move to the navigation | Go to the site search | Go to the menu | Contacts | Accessibility

| Create Account

Boletti, Alessio (2018) Measurement of angular parameters from the decay B0 -> K*0 \mu + \mu - in
proton-proton collisions at \sqrt{} s = 8 TeV.
[Ph.D. thesis]

Full text disponibile come:

[img]
Preview
PDF Document
Available under License Creative Commons Attribution.

16Mb

Abstract (english)

Angular distributions of the decay B0 → K∗0 μ+ μ− are studied using a sample of proton-proton collisions at sqrt(s) = 8 TeV collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 20.5 fb^−1. An angular analysis is performed to determine the P 1 and P'5 parameters, where the P'5 parameter is of particular interest because of recent measurements that indicate a potential discrepancy with the standard model predictions. Based on a sample of 1397 signal events, the P1 and P'5 parameters are determined as a function of the dimuon invariant mass squared. The measurements are in agreement with predictions based on the standard model.

Abstract (italian)

Le distribuzioni angolari del decadimento B0 → K∗0 μ+ μ− sono studiate usando i dati raccolti dall'esperimento CMS a LHC, in collisioni protone-protone a sqrt(s) = 8 TeV, e corrispondenti ad una luminosita` integrata di 20.5 fb^−1. E` eseguita un'analisi angolare per determinare i parametri P1 e P'5, ove il parametro P'5 e` di particolare interesse per via di recenti misure che indicano una potenziale discrepanza rispetto alle predizioni del modello standard. Sulla base di un campione di 1397 eventi di segnale, i parametri P1 e P'5 sono misurati in funzione del quadrato della massa del sistema dimuonico. Le misure risultano in accordo con le predizioni basate sul modello standard.

Statistiche Download
EPrint type:Ph.D. thesis
Tutor:Ronchese, Paolo
Supervisor:Lacaprara, Stefano
Ph.D. course:Ciclo 30 > Corsi 30 > FISICA
Data di deposito della tesi:15 January 2018
Anno di Pubblicazione:15 January 2018
Key Words:CMS angular analysis decay B0 decadimento analisi angolare
Settori scientifico-disciplinari MIUR:Area 02 - Scienze fisiche > FIS/04 Fisica nucleare e subnucleare
Struttura di riferimento:Dipartimenti > Dipartimento di Fisica e Astronomia "Galileo Galilei"
Codice ID:11021
Depositato il:09 Nov 2018 10:03
Simple Metadata
Full Metadata
EndNote Format

Bibliografia

I riferimenti della bibliografia possono essere cercati con Cerca la citazione di AIRE, copiando il titolo dell'articolo (o del libro) e la rivista (se presente) nei campi appositi di "Cerca la Citazione di AIRE".
Le url contenute in alcuni riferimenti sono raggiungibili cliccando sul link alla fine della citazione (Vai!) e tramite Google (Ricerca con Google). Il risultato dipende dalla formattazione della citazione.

[1] G. et al. (ATLAS Cerca con Google

Collab.) Aad. Journal of Instrumentation, 3:8003, August 2008. Cerca con Google

[2] R. Aaij et al. Differential branching fraction and angular Cerca con Google

analysis of the decay B 0 → K ∗0 μ + μ − . JHEP, 08:131, 2013. Cerca con Google

[3] R Aaij et al. Measurement of Form-Factor-Independent Observables Cerca con Google

in the Decay B 0 → K ∗0 μ + μ − . Phys. Rev. Lett., 111:191801, 2013. Cerca con Google

[4] R. Aaij et al. Angular analysis of the B 0 → K ∗ μ + μ − decay Cerca con Google

using 3 fb −1 of integrated luminosity. JHEP, 02:104, 2016. Cerca con Google

[5] R. Aaij et al. Angular analysis of the B 0 → K ∗ μ + μ − decay Cerca con Google

using 3 fb −1 of integrated luminosity. JHEP, 02:104, 2016. Cerca con Google

[6] R. Aaij et al. Test of lepton universality with B 0 → K ∗0 l + l − Cerca con Google

decays. JHEP, 08:055, 2017. Cerca con Google

[7] Roel Aaij et al. Angular analysis of the B 0 → K ∗0 μ + μ − decay Cerca con Google

using 3 fb −1 of integrated luminosity. JHEP, 02:104, 2016. Cerca con Google

[8] T. Aaltonen et al. Measurements of the Angular Distributions in Cerca con Google

the Decays B → K (∗) μ + μ − at CDF. Phys. Rev. Lett., 108:081807, 2012. Cerca con Google

[9] K. et al. (ALICE Collab.) Aamodt. Journal of Instrumentation, Cerca con Google

3:8002, August 2008. Cerca con Google

[10] A. Abdesselam et al. Lepton-flavor-dependent angular analysis of Cerca con Google

B → K ∗ l + l − . Phys. Rev. Lett., 118:111801, 2017. Cerca con Google

[11] W. et al. (CMS Collab.) Adam. Track Reconstruction in the CMS Cerca con Google

tracker. Technical Report CMS-NOTE-2006-041, CERN, Geneva, Dec 2006. Cerca con Google

[12] Wolfgang Altmannshofer, Patricia Ball, Aoife Bharucha, Andrzej J. Cerca con Google

Buras, David M. Straub, and Michael Wick. Symmetries and Asymmetries Cerca con Google

of B → K ∗ μ + μ − Decays in the Standard Model and Beyond. JHEP, Cerca con Google

01:019, 2009. Cerca con Google

[13] A. A. et al. (LHCb Collab.) Alves, Jr. Journal of Cerca con Google

Instrumentation, 3:8005, August 2008. Cerca con Google

[14] Bernard Aubert et al. Angular Distributions in the Decays B —¿ K* Cerca con Google

l+ l-. Phys. Rev., D79:031102, 2009. Cerca con Google

[15] B. Aubert et al. Time-integrated and time-dependent angular Cerca con Google

analyses of B → J/ψKπ: A measurement of cos2β with no sign ambiguity Cerca con Google

from strong phases. Phys. Rev. D, 71:032005, 2005. Cerca con Google

[16] G. L. et al. (CMS Collab.) Bayatian. CMS Physics: Technical Cerca con Google

Design Report Volume 1: Detector Performance and Software. Technical Cerca con Google

Design Report CMS. CERN, Geneva, 2006. Cerca con Google

[17] G. L. et al. (CMS Collab.) Bayatyan. CMS TriDAS project: Cerca con Google

Technical Design Report, Volume 1: The Trigger Systems. Technical Cerca con Google

Design Report CMS. Cerca con Google

[18] M. Beneke and T. Feldmann. Symmetry breaking corrections to heavy Cerca con Google

to light B meson form-factors at large recoil. Nucl. Phys., B592:3–34, Cerca con Google

2001. Cerca con Google

[19] M. Beneke, T. Feldmann, and D. Seidel. Systematic approach to Cerca con Google

exclusive B → V l + l − , V γ decays. Nucl. Phys., B612:25–58, 2001. Cerca con Google

[20] M. Beneke, Th. Feldmann, and D. Seidel. Exclusive radiative and Cerca con Google

electroweak b → d and b → s penguin decays at NLO. Eur. Phys. J., Cerca con Google

C41:173–188, 2005. Cerca con Google

[21] Christoph Bobeth, Mikolaj Misiak, and Jorg Urban. Photonic Cerca con Google

penguins at two loops and m t dependence of BR[B → X s l + l − ]. Cerca con Google

Nucl. Phys., B574:291–330, 2000. Cerca con Google

[22] O. S. et al. Bruning. 2004. Cerca con Google

[23] S. et al. (CMS Collab.) Chatrchyan. Journal of Instrumentation, Cerca con Google

3:8004, August 2008. Cerca con Google

[24] Serguei Chatrchyan et al. Performance of CMS muon reconstruction Cerca con Google

in pp collision events at √s = 7 TeV. JINST, 7:P10002, 2012. Cerca con Google

[25] Serguei Chatrchyan et al. Angular analysis of the decay B 0 → K Cerca con Google

∗0 μ + μ − from pp collisions at √s = 8 TeV. Phys. Lett. B, 753:424, Cerca con Google

2016. Cerca con Google

[26] S. et al. Cittolin. CMS The TriDAS Project: Technical Design Cerca con Google

Report, Volume 2: Data Acquisition and High-Level Trigger. CMS trigger Cerca con Google

and data-acquisition project. Technical Design Report CMS. CERN, Cerca con Google

Geneva, 2002. Cerca con Google

[27] M. Ciuchini, M. Fedele, E. Franco, S. Mishimad, A. Paul, L. Cerca con Google

Silvestrini, and M. Valli. B → K ∗ l + l − decays at large recoil in Cerca con Google

the Standard Model: a theoretical reappraisal. Submitted to JHEP. Cerca con Google

[28] CMS Collab. The CMS electromagnetic calorimeter project: Cerca con Google

Technical Design Report. Technical Design Report CMS. CERN, Geneva, 1997. Cerca con Google

[29] CMS Collab. The CMS hadron calorimeter project: Technical Design Cerca con Google

Report. Technical Design Report CMS. CERN, Geneva, 1997. Cerca con Google

[30] CMS Collab. The CMS magnet project: Technical Design Report. Cerca con Google

Technical Design Report CMS. CERN, Geneva, 1997. Cerca con Google

[31] CMS Collab. The CMS muon project: Technical Design Report. Cerca con Google

Technical Design Report CMS. CERN, Geneva, 1997. Cerca con Google

[32] Kyle S. Cranmer. Kernel estimation in high-energy physics. Cerca con Google

Comput. Phys. Commun., 136:198–207, 2001. Cerca con Google

[33] F. James, and M. Winklerc. Minuit user’s guide. Cerca con Google

http://seal.web.cern.ch/seal/work-packages/mathlibs/minuit/doc/doc.html, Vai! Cerca con Google

2004. Cerca con Google

[34] G. J. Feldman and R. D. Cousins. Unified approach to the Cerca con Google

classical statistical analysis of small signals. Phys. Rev. D, Cerca con Google

57:3873, 1998. Cerca con Google

[35] V. et al. (CMS Collab.) Karimki. The CMS tracker system project: Cerca con Google

Technical Design Report. Technical Design Report CMS. CERN, Geneva, 1997. Cerca con Google

[36] Vardan Khachatryan et al. Angular analysis of the decay B0 → K∗0 Cerca con Google

μ+ μ− from pp collisions at s = √8 TeV. 2015. Submitted to Phys. Lett. B. Cerca con Google

[37] Alexander Khodjamirian. QCD sum rules for heavy flavor physics. Cerca con Google

AIP Conf. Proc., 602:194–205, 2001. [,194(2001)]. Cerca con Google

[38] Joaquim Matias and Nicola Serra. Symmetry relations between Cerca con Google

angular observables in B 0 → K ∗ μ + μ − and the LHCb P 5 ′ anomaly. Cerca con Google

Phys. Rev., D90(3):034002, 2014. Cerca con Google

[39] K.A. Olive. Review of particle physics, 2014-2015. Chin. Phys. C, Cerca con Google

38:090001, 2014. Cerca con Google

[40] S. Descotes-Genon, T. Hurth, J. Matias, and J. Virto. Optimizing Cerca con Google

the basis of b → k ∗ l + l − observables in the full kinematic range. Cerca con Google

JHEP, 1305:137, 2013. Cerca con Google

[41] David W. Scott. Multivariate density estimation : theory, Cerca con Google

practice, and visualization. Wiley series in probability and Cerca con Google

mathematical statistics: Applied probability and statistics section. Cerca con Google

Wiley-Interscience, New York, Chichester, Brisbane, 1992. Cerca con Google

[42] Albert M Sirunyan et al. Measurement of angular parameters from Cerca con Google

the decay B 0 → K ∗0 μ + μ − in proton-proton collisions at √s = 8 Cerca con Google

TeV. 2017. Cerca con Google

[43] T. Sjöstrand, S. Mrenna, and P. Skands. PYTHIA 6.4 physics and Cerca con Google

manual. 5:26, May 2006. Cerca con Google

[44] T. et al. (CMS Collab.) Speer. Vertex Fitting in the CMS Tracker. Cerca con Google

Technical Report CMS-NOTE-2006-032, CERN, Geneva, Feb 2006. Cerca con Google

[45] W. Verkerke and D. Kirkby. The RooFit toolkit for data modeling. Cerca con Google

ArXiv Physics e-prints, June 2003. Cerca con Google

[46] J. T. Wei et al. Measurement of the Differential Branching Cerca con Google

Fraction and Forward-Backword Asymmetry for B → K (∗) l + l − . Phys. Cerca con Google

Rev. Lett., 103:171801, 2009. Cerca con Google

Download statistics

Solo per lo Staff dell Archivio: Modifica questo record