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 5:12 PM

Vaccine Nationalism: The Ethical Conundrum in the age of Global Pandemic

O People! Make way for the latest horrendous development of the infamous year 2020. We have straight out of the oven, the freshest item on the menu of ethical conundrums “Vaccine Nationalism”.

It seems like the cure is as dangerous as people dying of the COVID-19. Currently, according to the WHO, six vaccines have reached phase 3 trials, while 25 vaccines are in the clinical evaluation phase and 139 in pre-clinical evaluation.

COVID-19 Vaccine Nationalism | Marian Kamensky via Cartoon Movement

When the pandemic hit different parts of the world, the first response of the humans was to attack supermarkets and hoard loads of groceries (yes, toilet papers too). Vaccine Nationalism is just analogous to hoarding toilet papers, except, it’s just a phenomenon that occurs when rich countries pay for vaccines in advance and hoard them. Don’t worry politicians are not doing what they did not promise: remember ‘America first?’ and ‘India first?’

A global initiative by WHO – ACT (Access to COVID-19 Tools) Accelerator- aims at a cumulative process of R&D, manufacturing, regulatory, purchasing and procurement needed to fight against COVID-19. Unfortunately, the USA, Russia, India, and China did not receive the initiative with much-needed enthusiasm. The WHO also came up with another program called COVAX facility, that aims to provide 2 billion doses of vaccine by the end of the next year for middle and low-income countries.

Source: Brandon Reynolds via BusinessDay

The US compared its operation ‘Warp speed’ to the oxygen masks dropping during the flights. Russia tried to jump ahead, attempting to create a Sputnik moment. Russian President announced Russia curated the first COVID-19 vaccine called Sputnik V. The vaccines are still under trials and need much more necessary testing to work. Safe to say, Russia’s plan backfired earning them international scorn.

Vaccine nationalism will lead to global dysfunction. Rich countries will benefit as they can bid for the vaccine at high prices. Such high prices will lead to a disaster for the low-income countries, adding to their already deficient health care. These desperate countries will have no choice but to buy vaccines driving their economies in an even worse condition. Additionally, a single country having a vaccine will not help the problem in any way at all. Some nations have already gambled their chances of acquiring vaccines by speaking against other countries.

The unethical practice of Vaccine Nationalism is not at all unexpected. A bid against humanity is not entirely new. Similar responses were noted in 2009 when the world H1N1 flu crisis hit. Australia came up with a vaccine and sold 6,00,00 doses to the USA, blocking the exports to other countries. Once the effect of flu started diminishing, rich countries donated the vaccines to low-income nations. A similar situation happened in 2014 when the EBOLA crisis hit.

Politics aside, scientists are staying out of it and trying to work together for greater good. Instead of publishing research papers they are working collaboratively throughout the world. We must not forget that finding a cure or a significant role can earn a lot of scientists, assets, reputation, and promotions. Some lure away and are suspicious of sharing their work as well.

Rabindranath Tagore’s Portrait | Source: Wikimedia

When the search for a vaccine against such deadly disease mutates into a naked display of Vaccine Nationalism, Indian Nobel Laureate Rabindranath Tagore’s view on nationalism becomes an antidote. He believed in an idea of nationalism without borders. Tagore once described in a letter to his friend AM Bose that “the value of patriotism can never be greater than the value of humanity.”

It is a human tendency to compete and nature supports the fittest. How fit is it though to use strong nations’ ability to bully other unequipped nations? How generous is it to help others when they don’t even need help anymore? How ethical and moral is to block vaccine procurement for other countries for monetary and economic benefits?

These are some of the questions lost in the drumbeats of Vaccine Nationalism which is echoing across the continents. It's high time that concerned citizens should demand answers from their respective government to come clean on the real motive behind the call for developing a vaccine for global pandemic in a silo, when it actually needs global cooperation.

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