CKM angle $\gamma$ measurement at LHCb - INSPIRE

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CKM angle $\gamma$ measurement at LHCb

LHCb

Collaboration

•

Susan Haines
(
- Cambridge U.
)

for the collaboration.

Dec 21, 2018

6 pages

Part of Proceedings, 6th Large Hadron Collider Physics Conference (LHCP 2018) : Bologna, Italy, June 4-9, 2018, 173

Published in:

PoS LHCP2018 (2018) 173

Contribution to:

- LHCP 2018
, 173

Published: Dec 21, 2018 by SISSA

DOI:

10.22323/1.321.0173

Report number:

LHCb-PROC-2018-018

Experiments:

CERN-LHC-LHCb

View in:

CERN Document Server

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Abstract: (SISSA)

Data collected at the LHCb experiment have been used to determine the CKM angle

\gamma

with

B^{-} \rightarrow D K^{-}

,

D \rightarrow K_S^0 \pi^+ \pi^-

,

K_S^0 K^+ K^-

decays, leading to the most precise measurement of

\gamma

from a single analysis. Decay-time-dependent

CP

asymmetries in

B^0 \rightarrow D^{\mp} \pi^{\pm}

decays have been measured for the first time at a hadron collider and used to place constraints on

| \sin{(2\beta + \gamma)} |

and

\gamma

that are consistent with world average values. Combining these new results with other LHCb measurements leads to the most precise determination of

\gamma

from a single experiment. Decay modes with future sensitivity to

\gamma

, such as

B_{s}^0 \rightarrow \overline{D}^{0} K^{+} K^{-}

and

B_{s}^0 \rightarrow \overline{D}^{*0} \phi

, have been observed for the first time, and the most precise determinations of the branching fractions of

B^0 \rightarrow \overline{D}^{0} K^{+} K^{-}

and

B_{s}^0 \rightarrow \overline{D}^{0} \phi

decays have been obtained.

talk: Bologna 2018/06/04
p p: scattering
p p: colliding beams
B-: hadronic decay
D0: hadronic decay
LHC-B
CERN LHC Coll
CKM matrix
time dependence
B0: branching ratio

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Figures(0)

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