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Physicists discover new kind of tetraquark—the longest-lived yet found
Enlarge / An artist’s impression of Tcc+, a tetraquark composed of two charm quarks and an up and a down antiquark. (credit: CERN) The exotic family of particles known as tetraquarks has a surprising new member. Dubbed T cc + , it’s the first tetraquark to contain two heavy quarks and two light antiquarks, and […]
As Florida punishes schools, study finds masks cut school COVID outbreaks 3.5X
Enlarge / A second-grade teacher talks to her class during the first day of school at Tustin Ranch Elementary School in Tustin, CA on Wednesday, August 11, 2021. (credit: Getty | Paul Bersebach) Schools with universal masking were 3.5 times less likely to have a COVID-19 outbreak and saw rates of child COVID-19 cases 50 […]
You can grab another 12 months of PlayStation Plus for $45 today
Enlarge (credit: Ars Technica) Today’s Dealmaster is headlined by a nifty deal on PlayStation Plus, while 12-month subscriptions to Sony’s online gaming service are currently available for $45 at various retailers. We’ve seen year-long memberships go for less on multiple occasions over the years, but this discount is still $15 off the service’s usual going […]