Three never-seen-before subatomic particles have been discovered by scientists working on the Large Hadron Collider (LHC) and trying to unlock the building blocks of the universe, the European nuclear research centre Cern said on Tuesday.
The 27 kilometre-long LHC at Cern in Switzerland is the machine that found the Higgs boson particle, which along with its linked energy field is thought to have played a vital role in the formation of the universe after the Big Bang 13.7 billion years ago.
The LHC was powered up again on Tuesday after a three-year break for maintenance, as the world’s leading physicists look to build on the Higgs discovery by tackling unsolved mysteries about dark matter.
Now Cern scientists say they have observed a new kind of "pentaquark" and the first known pair of "tetraquarks", adding three members to the list of new hadrons found at the LHC.
"The more analyses we perform, the more kinds of exotic hadrons we find," physicist Niels Tuning said in a statement.
"We're witnessing a period of discovery similar to the 1950s, when a 'particle zoo' of hadrons started being discovered and ultimately led to the quark model of conventional hadrons in the 1960s. We're creating 'particle zoo 2.0'."
The findings will help physicists better understand how quarks bind together into composite particles.
Quarks are elementary particles that usually combine in groups of twos and threes to form hadrons such as the protons and neutrons that make up atomic nuclei.
More rarely, however, they can also combine into four or five-quark particles, or tetra and pentaquarks.
The Higgs finding proved that particles acquire mass by churning through an invisible field, like winter shoes gathering snow, and was a moment of excitement for physicists working on the theory.
For decades, the Higgs boson remained tantalisingly out of reach and like a search for a mythical animal, there was no way of proving that its footprints were not an illusion until the creature had actually been sighted.
A forerunner of the LHC, the Large Electron-Positron Collider, made an assault on the Higgs in 2000 but was not quite powerful enough to bludgeon it into existence.
The LHC started up in 2008, sending particles whizzing around a 27-kilometre pipe about 100 metres below the Earth’s surface, but a magnet failure after only 10 days pushed the project back by another year while repairs were made.
It started to generate possible Higgs bosons but they appeared at a rate of about one in every billion collisions, meaning it took years to collect enough data to prove anything.
Even then, it lasts for such a small amount of time before decaying — nought-point-(21 zeroes)-one seconds — that scientists have to look for the particles into which it morphs, such as photons, to be able to retrace its steps.
But on July 4, 2012, a critical line was crossed when enough data had been gathered that the possibility of a mistake — that the results indicating the Higgs boson were a fluke of subatomic dice-rolling — could safely be discounted.
The five pillars of Islam
The five pillars of Islam
UAE currency: the story behind the money in your pockets
The five pillars of Islam
1. Fasting
2. Prayer
3. Hajj
4. Shahada
5. Zakat
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RESULTS
Mumbai Indians 181-4 (20 ovs)
Kolkata Knight Riders 168-6 (20ovs)
Mumbai won by 13 runs
Rajasthan Royals 152-9 (20 ovs)
Kings XI Punjab 155-4 (18.4 ovs)
Kings XI Punjab won by 6 wickets
COMPANY%20PROFILE
%3Cp%3E%3Cstrong%3ECompany%20name%3A%3C%2Fstrong%3E%20Revibe%20%0D%3Cbr%3E%3Cstrong%3EStarted%3A%3C%2Fstrong%3E%202022%0D%3Cbr%3E%3Cstrong%3EFounders%3A%3C%2Fstrong%3E%20Hamza%20Iraqui%20and%20Abdessamad%20Ben%20Zakour%20%0D%3Cbr%3E%3Cstrong%3EBased%3A%3C%2Fstrong%3E%20UAE%20%0D%3Cbr%3E%3Cstrong%3EIndustry%3A%3C%2Fstrong%3E%20Refurbished%20electronics%20%0D%3Cbr%3E%3Cstrong%3EFunds%20raised%20so%20far%3A%3C%2Fstrong%3E%20%2410m%20%0D%3Cbr%3E%3Cstrong%3EInvestors%3A%20%3C%2Fstrong%3EFlat6Labs%2C%20Resonance%20and%20various%20others%0D%3C%2Fp%3E%0A
BACK%20TO%20ALEXANDRIA
%3Cp%3E%3Cstrong%3EDirector%3A%20%3C%2Fstrong%3ETamer%20Ruggli%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EStarring%3A%20%3C%2Fstrong%3ENadine%20Labaki%2C%20Fanny%20Ardant%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3ERating%3A%20%3C%2Fstrong%3E3.5%2F5%3C%2Fp%3E%0A
The years Ramadan fell in May
COMPANY%20PROFILE
%3Cp%3E%3Cstrong%3EName%3A%20%3C%2Fstrong%3ESmartCrowd%0D%3Cbr%3E%3Cstrong%3EStarted%3A%20%3C%2Fstrong%3E2018%0D%3Cbr%3E%3Cstrong%3EFounder%3A%20%3C%2Fstrong%3ESiddiq%20Farid%20and%20Musfique%20Ahmed%0D%3Cbr%3E%3Cstrong%3EBased%3A%20%3C%2Fstrong%3EDubai%0D%3Cbr%3E%3Cstrong%3ESector%3A%20%3C%2Fstrong%3EFinTech%20%2F%20PropTech%0D%3Cbr%3E%3Cstrong%3EInitial%20investment%3A%20%3C%2Fstrong%3E%24650%2C000%0D%3Cbr%3E%3Cstrong%3ECurrent%20number%20of%20staff%3A%3C%2Fstrong%3E%2035%0D%3Cbr%3E%3Cstrong%3EInvestment%20stage%3A%20%3C%2Fstrong%3ESeries%20A%0D%3Cbr%3E%3Cstrong%3EInvestors%3A%20%3C%2Fstrong%3EVarious%20institutional%20investors%20and%20notable%20angel%20investors%20(500%20MENA%2C%20Shurooq%2C%20Mada%2C%20Seedstar%2C%20Tricap)%3C%2Fp%3E%0A
In numbers: China in Dubai
The number of Chinese people living in Dubai: An estimated 200,000
Number of Chinese people in International City: Almost 50,000
Daily visitors to Dragon Mart in 2018/19: 120,000
Daily visitors to Dragon Mart in 2010: 20,000
Percentage increase in visitors in eight years: 500 per cent
Zayed Sustainability Prize
The specs
Engine: 3.0-litre 6-cyl turbo
Power: 374hp at 5,500-6,500rpm
Torque: 500Nm from 1,900-5,000rpm
Transmission: 8-speed auto
Fuel consumption: 8.5L/100km
Price: from Dh285,000
On sale: from January 2022
RESULTS
5pm: Sheikh Mansour bin Zayed Al Nahyan Racing Festival Purebred Arabian Cup Conditions (PA) Dh 200,000 (Turf) 1,600m
Winner: Hameem, Adrie de Vries (jockey), Abdallah Al Hammadi (trainer)
5.30pm: Sheikha Fatima bint Mubarak Cup Conditions (PA) Dh 200,000 (T) 1,600m
Winner: Winked, Connor Beasley, Abdallah Al Hammadi
6pm: Sheikh Sultan bin Zayed Al Nahyan National Day Cup Listed (TB) Dh 380,000 (T) 1,600m
Winner: Boerhan, Ryan Curatolo, Nicholas Bachalard
6.30pm: Sheikh Sultan bin Zayed Al Nahyan National Day Group 3 (PA) Dh 500,000 (T) 1,600m
Winner: AF Alwajel, Tadhg O’Shea, Ernst Oertel
7pm: Sheikh Sultan bin Zayed Al Nahyan National Day Jewel Crown Group 1 (PA) Dh 5,000,000 (T) 2,200m
Winner: Messi, Pat Dobbs, Timo Keersmaekers
7.30pm: Sheikh Mansour bin Zayed Al Nahyan Racing Festival Handicap (PA) Dh 150,000 (T) 1,400m
Winner: Harrab, Ryan Curatolo, Jean de Roualle
8pm: Wathba Stallions Cup Handicap (PA) Dh 100,000 (T) 1,400m
Winner: AF Alareeq, Connor Beasley, Ahmed Al Mehairbi
ASIAN%20RUGBY%20CHAMPIONSHIP%202024
%3Cp%3E%3Cstrong%3EResults%3C%2Fstrong%3E%3Cbr%3EHong%20Kong%2052-5%20UAE%3Cbr%3ESouth%20Korea%2055-5%20Malaysia%3Cbr%3EMalaysia%206-70%20Hong%20Kong%3Cbr%3EUAE%2036-32%20South%20Korea%3Cbr%3E%3Cbr%3E%3Cstrong%3EFixtures%3C%2Fstrong%3E%3Cbr%3EFriday%2C%20June%2021%2C%207.30pm%20kick-off%3A%20UAE%20v%20Malaysia%3Cbr%3EAt%20The%20Sevens%2C%20Dubai%20(admission%20is%20free).%3Cbr%3ESaturday%3A%20Hong%20Kong%20v%20South%20Korea%3Cbr%3E%3C%2Fp%3E%0A
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Directed by: Joe and Anthony Russo
Starring: Tom Holland, Ciara Bravo
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Conflict, drought, famine
Estimates of the number of deaths caused by the famine range from 400,000 to 1 million, according to a document prepared for the UK House of Lords in 2024.
It has been claimed that the policies of the Ethiopian government, which took control after deposing Emperor Haile Selassie in a military-led revolution in 1974, contributed to the scale of the famine.
Dr Miriam Bradley, senior lecturer in humanitarian studies at the University of Manchester, has argued that, by the early 1980s, “several government policies combined to cause, rather than prevent, a famine which lasted from 1983 to 1985. Mengistu’s government imposed Stalinist-model agricultural policies involving forced collectivisation and villagisation [relocation of communities into planned villages].
The West became aware of the catastrophe through a series of BBC News reports by journalist Michael Buerk in October 1984 describing a “biblical famine” and containing graphic images of thousands of people, including children, facing starvation.
Band Aid
Bob Geldof, singer with the Irish rock group The Boomtown Rats, formed Band Aid in response to the horrific images shown in the news broadcasts.
With Midge Ure of the band Ultravox, he wrote the hit charity single Do They Know it’s Christmas in December 1984, featuring a string of high-profile musicians.
Following the single’s success, the idea to stage a rock concert evolved.
Live Aid was a series of simultaneous concerts that took place at Wembley Stadium in London, John F Kennedy Stadium in Philadelphia, the US, and at various other venues across the world.
The combined event was broadcast to an estimated worldwide audience of 1.5 billion.
The specs: 2017 Lotus Evora Sport 410
Price, base / as tested Dh395,000 / Dh420,000
Engine 3.5L V6
Transmission Six-speed manual
Power 410hp @ 7,000rpm
Torque 420Nm @ 3,500rpm
Fuel economy, combined 9.7L / 100km
The years Ramadan fell in May
Greatest of All Time
Starring: Vijay, Sneha, Prashanth, Prabhu Deva, Mohan
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The specs
Engine: 3.0-litre six-cylinder turbo
Power: 398hp from 5,250rpm
Torque: 580Nm at 1,900-4,800rpm
Transmission: Eight-speed auto
Fuel economy, combined: 6.5L/100km
On sale: December
Price: From Dh330,000 (estimate)
The specs: 2019 Aston Martin DBS Superleggera
Price, base: Dh1.2 million
Engine: 5.2-litre twin-turbo V12
Transmission: Eight-speed automatic
Power: 725hp @ 6,500pm
Torque: 900Nm @ 1,800rpm
Fuel economy, combined: 12.3L / 100km (estimate)
RESULTS
6.30pm: Maiden (TB) Dh 82,500 (Dirt) 1.600m
Winner: Miller’s House, Richard Mullen (jockey), Satish Seemar (trainer).
7.05pm: Maiden (TB) Dh 82,500 (D) 2,000m
Winner: Kanood, Adrie de Vries, Fawzi Nass.
7.50pm: Handicap (TB) Dh 82,500 (D) 1,600m
Winner: Gervais, Sandro Paiva, Ali Rashid Al Raihe.
8.15pm: The Garhoud Sprint Listed (TB) Dh 132,500 (D) 1,200m
Winner: Important Mission, Royston Ffrench, Salem bin Ghadayer.
8.50pm: The Entisar Listed (TB) Dh 132,500 (D) 2,000m
Winner: Firnas, Xavier Ziani, Salem bin Ghadayer.
9.25pm: Conditions (TB) Dh 120,000 (D) 1,400m
Winner: Zhou Storm, Connor Beasley, Ali Rashid Al Raihe.
UAE currency: the story behind the money in your pockets
Infiniti QX80 specs
Engine: twin-turbocharged 3.5-liter V6
Power: 450hp
Torque: 700Nm
Price: From Dh450,000, Autograph model from Dh510,000
Available: Now
Profile
Company: Justmop.com
Date started: December 2015
Founders: Kerem Kuyucu and Cagatay Ozcan
Sector: Technology and home services
Based: Jumeirah Lake Towers, Dubai
Size: 55 employees and 100,000 cleaning requests a month
Funding: The company’s investors include Collective Spark, Faith Capital Holding, Oak Capital, VentureFriends, and 500 Startups.
VEZEETA PROFILE
Date started: 2012
Founder: Amir Barsoum
Based: Dubai, UAE
Sector: HealthTech / MedTech
Size: 300 employees
Funding: $22.6 million (as of September 2018)
Investors: Technology Development Fund, Silicon Badia, Beco Capital, Vostok New Ventures, Endeavour Catalyst, Crescent Enterprises’ CE-Ventures, Saudi Technology Ventures and IFC
Spider-Man: No Way Home
Director: Jon Watts
Stars: Tom Holland, Zendaya, Jacob Batalon
Rating:*****
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Green ambitions
- Trees: 1,500 to be planted, replacing 300 felled ones, with veteran oaks protected
- Lake: Brown's centrepiece to be cleaned of silt that makes it as shallow as 2.5cm
- Biodiversity: Bat cave to be added and habitats designed for kingfishers and little grebes
- Flood risk: Longer grass, deeper lake, restored ponds and absorbent paths all meant to siphon off water
