Particle Physics Seminars at BNL

Observation of the mass difference between neutral charm-meson eigenstates

by Dr Nathan Jurik (CERN)

US/Eastern
Description

The flavor eigenstates of neutral mesons are superpositions of their mass eigenstates, which leads to time-dependent oscillations between the mesons and their corresponding antimeson states. The frequency of the oscillations is governed by the mass difference of the eigenstates, which is very small in the charm system and until recently had not been seen to conclusively differ from zero. A recent measurement from the LHCb collaboration will be presented which observes a nonzero value of the mass difference for the first time. The measurement also dramatically improves constraints on the size of mixing-induced CP violation. Implications of the measurement and an outlook will be then be discussed.

 

 

Topic: BNL Particle Physics Seminar Jun 24
Time: Jun 24, 2021 03:00 PM Eastern Time (US and Canada)

Join Zoom Meeting
https://fnal.zoom.us/j/97198165478?pwd=K1ZyeWR0REpWV0ZPRE9ZTTdLdUVsZz09

Meeting ID: 971 9816 5478
Passcode: 228370
One tap mobile
+16465588656,,97198165478#,,,,*228370# US (New York)
+13017158592,,97198165478#,,,,*228370# US (Washington DC)

Dial by your location
        +1 646 558 8656 US (New York)
        +1 301 715 8592 US (Washington DC)
        +1 312 626 6799 US (Chicago)
        +1 346 248 7799 US (Houston)
        +1 669 900 6833 US (San Jose)
        +1 253 215 8782 US (Tacoma)
Meeting ID: 971 9816 5478
Passcode: 228370
Find your local number: https://fnal.zoom.us/u/aenUW2ucow

Join by SIP
97198165478@zoomcrc.com

Join by H.323
162.255.37.11 (US West)
162.255.36.11 (US East)
115.114.131.7 (India Mumbai)
115.114.115.7 (India Hyderabad)
213.19.144.110 (Amsterdam Netherlands)
213.244.140.110 (Germany)
103.122.166.55 (Australia Sydney)
103.122.167.55 (Australia Melbourne)
209.9.211.110 (Hong Kong SAR)
64.211.144.160 (Brazil)
69.174.57.160 (Canada Toronto)
65.39.152.160 (Canada Vancouver)
207.226.132.110 (Japan Tokyo)
149.137.24.110 (Japan Osaka)
Meeting ID: 971 9816 5478
Passcode: 228370

 

Organized by

Hanyu Wei