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X-WR-CALDESC:Events for LBNL Physics Division Research Progress Meetings
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DTSTART:20260101T000000
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DTSTART;TZID=UTC:20260730T160000
DTEND;TZID=UTC:20260730T170000
DTSTAMP:20260824T212126
CREATED:20260724T170931Z
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SUMMARY:Speaker: José Bernal (IFCA) - Title: Line-Intensity Mapping: progress and lessons learned
DESCRIPTION:Research Progress Meeting \nDate: July 30\, 2026 \nTime: 4:00- 5:00 pm \nLocation: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]  \nSpeaker: José Bernal (IFCA) \nTitle: Line-Intensity Mapping: progress and lessons learned \nAbstract: Line-Intensity mapping (LIM) uses the integrated flux along the line of sight as tracer of the LSS. Using relatively low-aperture telescopes\, it recovers radial information targeting known spectral lines discarding the continuum emission\, which makes the experiments cheaper compared with galaxy surveys. Mapping the intensity fluctuations of an array of lines from HI 21cm to optical-UV lines offers a unique opportunity to probe redshifts well beyond the reach of other cosmological observations\, access regimes that cannot be explored otherwise\, and exploit the enormous potential of cross-correlations with other measurements. This promises to deepen our understanding of various questions related to galaxy formation and evolution\, cosmology\, and fundamental physics. In this talk I will cover the current status of LIM\, focusing on recent developments of the HETDEX and MeerKLASS collaborations and the lessons learned in this pathfinder stage that must be applied for future\, larger surveys. \nhttps://lbnl.zoom.us/j/98854322464?pwd=K2tKUm1VZjRlV1J5RHE3cXdHQzRxdz09 \nMeeting ID: 988 5432 2464\n\nPasscode: 142239
URL:https://rpm.physics.lbl.gov/event/speaker-jose-bernal-ifca-title-line-intensity-mapping-progress-and-lessons-learned/
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DTSTART;TZID=UTC:20260901T160000
DTEND;TZID=UTC:20260901T170000
DTSTAMP:20260824T212126
CREATED:20260824T180517Z
LAST-MODIFIED:20260824T180517Z
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SUMMARY:Speaker: Diego Tonelli (INFN) - Title: First measurement of decay-time-dependent CP violation in B0->pi0pi0 decays
DESCRIPTION:Research Progress Meeting \nDate: September 1\, 2026 \nTime: 4:00- 5:00 pm \nLocation: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]  \nSpeaker: Diego Tonelli (INFN) \nTitle: First measurement of decay-time-dependent CP violation in B0->pi0pi0 decays \nAbstract: The Belle II experiment at the SuperKEKB e+e- collider is pushing the intensity frontier with unprecedented instantaneous luminosities. With the world’s largest Y(4S) data set\, the experiment combines abundant data\, advanced detector performance\, and novel analysis methods to open new opportunities to advance quark-flavor physics. I report the first measurement of mixing-induced charge-parity (CP) violation in B^0 \to \pi^0 \pi^0 decays\, a critical input for constraining the quark-mixing angle \phi_2 ( or \alpha). While traditionally deemed impossible without an order of magnitude more data\, this measurement is achieved using a novel technique enabled by the SuperKEKB large-crossing angle\, small interaction region and the Belle II pixel detector’s vertex resolution. By exploiting the quantum entanglement of the B^0B^0-bar pair from \Upsilon(4S) decays\, the method uses only the companion B decay time to infer the signal CP parity.\nUsing 170 signal events reconstructed from a 0.4 ab^-1 sample\, we determine the mixing-induced CP asymmetry\, significantly improving \phi_2 constraints from B \to \pi \pi\ decays. This technique unlocks future time-dependent CP-violation measurements for final states without reconstructible decay vertices.\n \nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/95679892182?pwd=RU5xU2dDRFNabnR1U3pQMklkYWFIdz09 \nMeeting ID: 956 7989 2182 \nPasscode: 169037
URL:https://rpm.physics.lbl.gov/event/speaker-diego-tonelli-infn-title-first-measurement-of-decay-time-dependent-cp-violation-in-b0-pi0pi0-decays/
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