A Quark Like No Other: Can Bottom Quark Confirm the 'God Particle'

“Until we’re sure whether it’s a Standard Model Higgs or an imposter mixed with another kind of Higgs, we are desperate to learn what is beyond the Standard Model. The Higgs is our window beyond the Standard Model,” Mallik says.

Still, the quest remains complicated: A Higgs boson is created about once in 10 trillion tries. Moreover, Higgs bosons decay into other particles almost instantly after they are produced, which makes detecting and defining their decaying constituents—such as the bottom quarks—even more challenging.

Mallik and her team hope to observe bottom quarks by following the post-collision clutter that arises from the decay of the Higgs or other new heavy particles similar to it.

“It’s basically identifying, picking that needle in the haystack while not getting fooled by something else,” says Mallik, who spent the past academic year at ATLAS, one of four particle detectors at the Large Hadron Collider. “That is the challenge.”

Mallik, three postdoctoral researchers, a graduate student, and a software engineer from the UI have all been at ATLAS sifting through the voluminous data produced by the collisions. Their work is funded through the High Energy Physics program, part of the U.S. Department of Energy’s Office of Science.

Anindya Ghosh, a first-year UI graduate student from India joined Mallik’s group in 2015 after hearing her speak the year before at the Indian Institute of Technology in Madras, India. Ghosh worked with the ATLAS experiments over most of last summer.

He calls it “a fantastic place” to be, with hundreds of scientists, students, and teachers joined in the same quest.

“It’s a really great opportunity for a new student like me to learn from the experts,” Ghosh says.

The attempt to understand the underpinnings of the universe—and human existence—has always fascinated Mallik.

“It’s always interested me,” she says. “How did we come into being? What led to our universe? It’s a fundamental question in many forms.”