Friday, July 17, 2020

Discovery of a new particle: A Charming Tetraquark

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Hardi Talwani

Article Title

Discovery of a new particle: A Charming Tetraquark

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Global Views 360

Publication Date

July 17, 2020

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The Large Hadron Collider

The Large Hadron Collider | Source: Anna Pantelia via CERN

While the world is horrified by the novel Coronavirus, scientists at the European Centre for Nuclear Research (CERN) announced the discovery of a never seen before tetraquark. Any finding in particle physics is a phenomenal one because it could tell us a lot about the origins of the universe and how everything came to be. And this discovery is quite charming and quarky (quirky).

Quarks are the elementary particles so any further division of these particles is not possible. This means everything in the universe is ultimately a combination of Quarks. Any new discovery of Quarks  therefore increase our understanding about the origin of universe

When three Quarks come together, they form familiar particles known as Baryons, for instance, protons and neutrons, found in the nucleus of an atom. A tetraquark, in particle physics, is an exotic meson composed of four quarks.

Murray Gell-Mann, recipient of the 1969 Nobel Prize in Physics for his work on the theory of Elementary particles, chose the name ‘Quark’. Another scientist,  George Zweig from CERN also proposed the Quark theory independently of Gell-Mann.

All the new particles are detected using particle accelerators where particles are accelerated at almost the speed of light and collide to look into their subsets. It is like knocking two rocks together so that they break into smaller constituents.

The most recent tetraquark, named X (6900) was discovered by CERN physicists while working on LHCb (Large Hadron Collider beauty experiment). The already known tetraquarks contain a particular combination of two relatively heavy quarks and two light Quarks. On the other hand X(6900) consists of four heavy Quarks: two Quarks and two anti-Quarks.

This exclusive particle made of unusual combinations is a perfect setting for understanding the fundamental force of nature known as Strong Interaction. The strong force is vital to comprehend as it binds together protons, neutrons and the nucleus that ultimately make up matter. Another perk of X(6900)  is its relatively heavy mass, so these are simpler to look at and are more stable as compared to notoriously fast moving-lighter ones.

The paper written by 800 scientists is yet to be peer-reviewed. The bump observed has a statistical significance of more than five sigma (standard deviations) that is good enough to claim the discovery of a new particle.

In any scenario, this unusual discovery will serve as a piece for completing the puzzle of our universe while serving as evidence of the presence of new particles not yet found.

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February 4, 2021 4:47 PM

Alija Izetbegović: Journey from prison to Bosnian Presidency

In a world that still holds up the burden of racisms and prejudice, the struggle of vanquishing differences between various religious sects and political groups that emerged vibrantly back in the late 20th century sets an exemplary path for leaders today to follow.

The legendary Bosnian leader, Alija Izetbegović, who dedicated his entire life in the process of protecting human rights of Bosnian Muslims who were subjected to brutal crimes and violence by the neighboring countries, with his visionary and revolutionary thoughts played an important role during the dramatic changes that took place post the World War II.  

Born in 1925, Alija was always driven by his strong moral compass. For him, his ethics and his moral principles served him as a winning weapon in all battles. According to him, ethics added meaning and purpose to life.

He studied from the ‘University of Sarajevo’ with a degree in arts, laws, and science. His life journey began when he first appeared in the frontline as a civil right activist of an organization established by Sheikh Muhammad Kharji and Sheikh Cassim Dobreje.

It was in 1946 that he was first arrested when he was a twenty-one year old youngster. He was condemned for being a part of a group/organization that expounded religious freedom and human rights. He was sentenced to jail for 3 years. Unfortunately, this wasn’t an end to his hardship. In 1949, young Izetbegović was once again imprisoned, as per the orders received from a special military court. This time he was given a five-year sentence. His crime - active support behind the Young Muslim Organization. Izetbegović spent his youth behind the bars thinking and strengthening his spirit of establishing a multicultural Bosnia once again.  

Later in August of 1983, Izetbegović along with eleven other scholars was sentenced to 14 years in prison. It was during this time that Izetbegović wrote his book, “Notes from Prison: 1983-88”. In his book, he encompasses his experience at the prison cell and how resistance grew in him during all these years.

Izetbegović soon faced national and international Media under his virtue of engagement with the social and political affairs of the country. In 1990, he founded the Party of Democratic Action (SDA) and won the elections with a majority in 1992. The man who spent years in jail yet, filled with optimism and encouragement, had made it through all the agonies and challenges life put him through. With his party gaining central power, Izetbegović was elected as the first President of the country. Later, he also announced Bosnia-Herzegovina an independent republic.

Although Izetbegović was now the president of a young republic country, an end to criticism and racial crimes was not yet achieved. During the Croat-Bosniak war in 1993, the Croats destroyed the Mostar bridge (also known as Stari Bridge). Underlining their catastrophic act falsely as strategically driven, the Croats through this destruction attacked the symbolic importance of the Bridge, which was to connect diverse communities across it.

Despite the sustained attacks and strenuous efforts of the neighboring countries to curb rising unity and ethnicity in Bosnia, the Bosnian Leader always taught his fellow countrymen and soldiers to be superior morally first. He believed that it is this superiority that will fetch them their ultimate goal. For him, instituting peace was a fundamental duty, a greater win, or “greater jihad” over any other military victory. Rising international pressure ultimately brought peace in 1995.

Finally, he stepped down from the presidential throne in 2000. After he grimly fell ill, the greatest revolutionary thinker died in 2003. His eternal story of life struggle is inspiring, making him worthy of the title “wise king”.

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