Discovery of a new particle: A Charming Tetraquark
Publisher
Global Views 360
Publication Date
July 17, 2020
URL
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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Bengal Elections: Will there be a transfer of power or TMC’s will rule continue?
As the assembly elections in West Bengal are getting closer, the competition between the Bharatiya Janata Party (BJP) and Trinamool Congress (TMC) is getting more intense. This election and its result will be historic. Whole nation is looking forward to the Bengal Elections keenly.
Recently, there was a lot of hue and cry by the BJP when some people allegedly tried to attack the BJP party president JP Nadda's convoy near Diamond harbour in West Bengal. While the BJP labelled the attack as a “sponsored violence”, CM Mamata Banerjee called it a “drama” staged by the BJP to gain media attention. But apart from all this, there are other things which make this election important.
Other than the BJP and the ruling TMC, there are other players as well – Left Front, led by CPI(M), Congress Party, AIMIM.
The situation of the Left Front and the Congress
Rally of Congress and Left Alliance | Source: IBTimes
In the 2019 Lok Sabha elections, the Left Front did not win a single parliamentary seat. Also, except the Jadavpur constituency, it lost all its deposits in all the seats. The Indian National Congress, which is its alliance partner, did not fare well as well and managed to get two seats only. In the upcoming 2021 assembly elections, the two parties have again joined hands, and this time, it’s not just about the electoral victory, but also about maintaining their relevance in the state.
The Left Front, which used to be a major party in the state and ruled for decades, is now seeing an existential crisis. Their first aim is to retain themselves as the main opposition party of West Bengal. Mamata Banerjee’s thumping victory in the 2011 elections marked the end of the Left rule in West Bengal. In the 2016 Assembly Elections, Trinamool Congress had a landslide victory, whereas the BJP got only two seats. But now, the BJP is emerging as the main opposition to TMC, which should be a matter of concern for the Left Front which is losing ground. In an article by The Quint, CPI(M) leader Shatarup Ghosh said, “Of course the BJP is our main opposition—not just in West Bengal but also nationally. They are ideologically and politically completely opposed to us. But that being said, we are not ready to give an inch to Mamata Banerjee either. The TMC needs to go, but they can’t be replaced by the BJP. That is our position”. The Left also alleges that TMC violence against them increased especially after 2016. “At this point, because we couldn’t function in full strength, there was a void in the space of the opposition. The BJP came in at that point and said that they’re running the centre, have CBI, ED and other machinery and can help fight the TMC in a way that the Left can’t. Those who wanted to vote against TMC, therefore, naturally went to them”, he adds.
The Indian National Congress has ruled West Bengal first from 1947–62, and then again from 1972–77. After that, Congress has not performed well in the elections here.
Rise of AIMIM in West Bengal
Asaduddin Owaisi, the face of AIMIM | Source: Wikimedia
All India Majlis-e-Ittehad Ul Muslimeen– better known as AIMIM, has seen a rise recently outside their home state, after winning 5 seats in the Bihar elections. Party President Asaduddin Owaisi held a meeting with AIMIM West Bengal party functionaries for taking their views with regards to the upcoming elections and political situation in the state, calling it a “fruitful” meeting.
On AIMIM focusing on Bengal Elections, TMC MP Saugata Roy took a jibe at the party’s chief and called him “an assistant of the BJP, who is being used by the latter to split non-BJP votes”.
Muslim votes are crucial for the TMC. AIMIM senior leader Syed Asim Waqar tweeted, telling Mamata Banerjee’s party that their enemy is the same, the BJP. Aurangabad MP and AIMIM Maharashtra President Imtiaz Jaleel tweeted: "Bihar tou jhaaki hai...WB, UP baaki hai" (Bihar is just the beginning, West Bengal and Uttar Pradesh are remaining). Other than this, party chief Owaisi recently said that it has been the consistent stand of the party that it would not contest elections in Assam and Kerala, as AIUDF and the Indian Union Muslim League are present in the two states. These points clearly show which states the party is aiming for.
Muslims form about 27% of the West Bengal state population, but still remain underrepresented. They account for only 6% of government jobs. Although their representation has been better under the TMC, they still need improvement in the representation for the betterment of their community.
BJP and TMC
CM Mamata Banerjee (L) and PM Narendra Modi (R) meeting | Source: Wikimedia
Recently, TMC MLA Suvendu Adhikari—along with 23 others—joined BJP, at Home Minister Amit Shah's Midnapore rally, as a major blow to Mamata Banerjee and the TMC. Shah alleged that Mamata Banerjee has changed her party’s slogan from “Maa, Maati, Manush” (Mother, Earth, Humanity) to “extortion, corruption and pandering to the nephew”, targeting Banerjee’s nephew and MP Abhishek Banerjee.
The BJP increased its seats from 2 to 18 in West Bengal in the 2019, which came as a surprise. Almost 57% of Hindu votes went to the BJP, and 32% to TMC. The party is trying to woo Hindus and also the Hindi-speaking population of West Bengal. Recently, BJP-supported Hindutva organisations such as the VHP, Bajrang Dal and the RSS, which had only a little presence in the state, have become more assertive, as was seen through their armed processions for Ram Navami.
To keep a check on the saffron party’s rise, the Mamata government made sure to announce new schemes and that the previously implemented policies remain fresh in the minds of the people. Recently, the TMC released its 'report card' on the work they have done and the promises kept. They have mentioned the 'Sabujsathi' scheme in it, which, according to the Mamata government, has been fulfilled. In this scheme, bicycles were to be distributed among approximately 40 lakh students from classes 9th to 12th studying in govt run and govt aided schools in West Bengal. The scheme was launched in September 2015. A scheme called “Swasth Saathi” was launched recently by the West Bengal government, as the BJP attacked the government by saying it did not implement the Ayushman Bharat scheme of the central government.
Even after opposition from newly emerging parties in the state, like the BJP and AIMIM, other than that from the already existing parties, the Left Front and the Congress, the TMC is trying to remain optimistic about their third term. Who’s winning? Only time—and the people of West Bengal—will tell.
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