Measurements of $CP$ violation in neutral B mesons at LHCb - INSPIRE

DataBETA

Measurements of $CP$ violation in neutral B mesons at LHCb

LHCb

Collaboration

•

N. Belloli
(
- Milan Bicocca U. and
- INFN, Milan Bicocca
)

for the collaboration.

Jan, 2018

3 pages

Part of Proceedings, 16th Incontri di Fisica delle Alte Energie (IFAE 2017) : Trieste, Italia, April 19-21, 2017, 32

Published in:

Nuovo Cim.C 41 (2018) 1-2, 32

Contribution to:

- IFAE 2017
, 32

Published: Jan, 2018

DOI:

10.1393/ncc/i2018-18032-9

Experiments:

CERN-LHC-LHCb

View in:

CERN Document Server

reference search0 citations

Citations per year

0 Citations

Abstract:

During 2011 and 2012 the LHCb detector collected data comingfrom proton-proton collision corresponding to an integrated luminosity of 1

fb^−1

at a center-of-mass energy of 7 TeV and 2

fb^−1

at a center-of-mass energy of 8 TeV,respectively. Using this data sample LHCb can measure with an unprecedentedprecision the parameters associated to the CKM matrix. In the neutral B mesonsystem,CPviolation is induced from the interference of decay with or without mix-ing, with possible implications in the search for physics beyond the Standard Model.Recent results obtained by LHCb Collaboration are presented, which give access to the β and

\phi_s

parameters, in particular the analysis of the decays

B^0 \rightarrow J/\psi K_s^0

,

B_s^0 \rightarrow J/\psi K^+K^-

and

B_s^0 \rightarrow J/\psi \pi ^+\pi^-

. Finally the first LHCb measurements of CP violation in the channels

B^0→D^+D^−

and

B_s^0→D_s^+ K^−

are presented.

talk: Trieste 2017/04/19
p p: scattering
p p: colliding beams
B0: hadronic decay
B/s0: hadronic decay
D+: pair production
CP: violation
CKM matrix
LHC-B
CERN LHC Coll

References(14)

Figures(0)

[1]

The LHCb Detector at the LHC

LHCb

Collaboration

•

A.Augusto Alves, Jr.
(
- Rio de Janeiro, CBPF
)

et al.

- JINST 3 (2008) S08005
•
DOI:
- 10.1088/1748-0221/3/08/S08005

[2]

Unitary Symmetry and Leptonic Decays

Nicola Cabibbo
(
- CERN
)

- Phys.Rev.Lett. 10 (1963) 531-533,
- Also in *Bologna 1984, Proceedings, Fifty years of weak-interaction physics* 648-649
•
DOI:
- 10.1103/PhysRevLett.10.531

[3]

CP Violation in the Renormalizable Theory of Weak Interaction

Makoto Kobayashi
(
- Kyoto U.
)
,
Toshihide Maskawa
(
- Kyoto U.
)

- Prog.Theor.Phys. 49 (1973) 652-657,
- Also in *Lichtenberg, D. B. (Ed.), Rosen, S. P. (Ed.): Developments In The Quark Theory Of Hadrons, Vol. 1*, 218-223.
•
DOI:
- 10.1143/PTP.49.652

[4]

Opposite-side flavour tagging of B mesons at the LHCb experiment

LHCb

Collaboration

•

R. Aaij
(
- NIKHEF, Amsterdam
)

et al.

- Eur.Phys.J.C 72 (2012) 2022
•
e-Print:
- 1202.4979
•
DOI:
- 10.1140/epjc/s10052-012-2022-1

[5]

$B$ flavour tagging using charm decays at the LHCb experiment

LHCb

Collaboration

•

Roel Aaij
(
- CERN
)

et al.

- JINST 10 (2015) 10, P10005
•
e-Print:
- 1507.07892
•
DOI:
- 10.1088/1748-0221/10/10/P10005

[6]

A new algorithm for identifying the flavour of $B_s^0$ mesons at LHCb

LHCb

Collaboration

•

Roel Aaij
(
- CERN
)

et al.

- JINST 11 (2016) 05, P05010
•
e-Print:
- 1602.07252
•
DOI:
- 10.1088/1748-0221/11/05/P05010

[7]

Measurement of $CP$ violation in $B^0 \rightarrow J/\psi K^0_S$ decays

LHCb

Collaboration

•

Roel Aaij
(
- CERN
)

et al.

- Phys.Rev.Lett. 115 (2015) 3, 031601
•
e-Print:
- 1503.07089
•
DOI:
- 10.1103/PhysRevLett.115.031601

[8]

Measurement of Time-Dependent CP Asymmetry in B0 ---> c anti-c K(*)0 Decays

BaBar

Collaboration

•

Bernard Aubert
(
- Annecy, LAPP
)

et al.

- Phys.Rev.D 79 (2009) 072009
•
e-Print:
- 0902.1708
•
DOI:
- 10.1103/PhysRevD.79.072009

[9]

Precise measurement of the CP violation parameter $\sin2\phi_1$ in $B^0\to(c\bar c)K^0$ decays

Belle

Collaboration

•

I. Adachi
(
- KEK, Tsukuba
)

et al.

- Phys.Rev.Lett. 108 (2012) 171802
•
e-Print:
- 1201.4643
•
DOI:
- 10.1103/PhysRevLett.108.171802

[10]

New algorithms for identifying the flavour of ${\mathrm {B}} ^0$ mesons using pions and protons

LHCb

Collaboration

•

R. Aaij

et al.

- Eur.Phys.J.C 77 (2017) 4, 238
•
e-Print:
- 1610.06019
•
DOI:
- 10.1140/epjc/s10052-017-4731-y

[11]

Measurement of $CP$ violation in $B^0 \!\rightarrow D^+ D^-$ decays

LHCb

Collaboration

•

Roel Aaij
(
- CERN
)

et al.

- Phys.Rev.Lett. 117 (2016) 26, 261801
•
e-Print:
- 1608.06620
•
DOI:
- 10.1103/PhysRevLett.117.261801

[12]

Precision measurement of $CP$ violation in $B_s^0 \to J/\psi K^+K^-$ decays

LHCb

Collaboration

•

Roel Aaij
(
- NIKHEF, Amsterdam
)

et al.

- Phys.Rev.Lett. 114 (2015) 4, 041801
•
e-Print:
- 1411.3104
•
DOI:
- 10.1103/PhysRevLett.114.041801

[13]

LHCb

- Phys.Rev.B 736 (2014) 186

[14]

LHCb Collaboration LHCb-CONF, Vol. 015