* . *
  • About
  • Advertise
  • Privacy & Policy
  • Contact
Sunday, September 28, 2025
Earth-News
  • Home
  • Business
  • Entertainment
    TicketSmarter Fall Entertainment Guide – Eastern Illinois University Athletics

    TicketSmarter Fall Entertainment Guide – Eastern Illinois University Athletics

    Cardi B Adds More Dates to Little Miss Drama Tour: ‘Y’all Making Me Work’ – Yahoo

    Cardi B Extends Little Miss Drama Tour: “Y’all Making Me Work

    ‘Today’: Sheinelle Jones Thanks Katie Couric for Support After Husband’s Death – CBS 19 News

    Sheinelle Jones Expresses Heartfelt Thanks to Katie Couric for Support After Husband’s Passing

    Sate your hunger at DBA’s Taste of Downtown – Bakersfield.com

    Indulge Your Cravings at DBA’s Taste of Downtown!

    Caesars Entertainment (CZR): Assessing Valuation After Times Square Casino Setback and Mounting Investor Concerns – simplywall.st

    Caesars Entertainment Faces Times Square Casino Hurdles as Investor Concerns Mount

    Why Hilaria Baldwin Has Found the ‘DWTS’ Process ‘Embarrassing’ At Times – WFXG

    Hilaria Baldwin Opens Up About the Embarrassing Moments on Her ‘DWTS’ Journey

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    How Sustainable Technology is Shaping a Greener Future – Technology Magazine

    How Sustainable Technology is Driving the Revolution Toward a Greener Future

    Aurora police hope to add facial recognition technology to crime-fighting tools – CBS News

    Aurora Police Aim to Boost Crime-Fighting with New Facial Recognition Technology

    Autonomous Solutions shows off cutting-edge technology for the public – Cache Valley Daily

    Autonomous Solutions Unveils Cutting-Edge Technology for the Public

    Amazon to Pay $2.5 Billion in Prime Membership Settlement – The New York Times

    Amazon to Pay $2.5 Billion in Prime Membership Settlement – The New York Times

    What are we really gaining from technology? – Fast Company

    What Are We Really Gaining from Technology?

    TOMI Environmental Solutions, Inc. Expands SteraMist iHP Technology Services in Healthcare Sector with New Provider Partnership – Quiver Quantitative

    TOMI Environmental Solutions Accelerates SteraMist iHP Technology Expansion in Healthcare with New Provider Partnership

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
  • Home
  • Business
  • Entertainment
    TicketSmarter Fall Entertainment Guide – Eastern Illinois University Athletics

    TicketSmarter Fall Entertainment Guide – Eastern Illinois University Athletics

    Cardi B Adds More Dates to Little Miss Drama Tour: ‘Y’all Making Me Work’ – Yahoo

    Cardi B Extends Little Miss Drama Tour: “Y’all Making Me Work

    ‘Today’: Sheinelle Jones Thanks Katie Couric for Support After Husband’s Death – CBS 19 News

    Sheinelle Jones Expresses Heartfelt Thanks to Katie Couric for Support After Husband’s Passing

    Sate your hunger at DBA’s Taste of Downtown – Bakersfield.com

    Indulge Your Cravings at DBA’s Taste of Downtown!

    Caesars Entertainment (CZR): Assessing Valuation After Times Square Casino Setback and Mounting Investor Concerns – simplywall.st

    Caesars Entertainment Faces Times Square Casino Hurdles as Investor Concerns Mount

    Why Hilaria Baldwin Has Found the ‘DWTS’ Process ‘Embarrassing’ At Times – WFXG

    Hilaria Baldwin Opens Up About the Embarrassing Moments on Her ‘DWTS’ Journey

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    How Sustainable Technology is Shaping a Greener Future – Technology Magazine

    How Sustainable Technology is Driving the Revolution Toward a Greener Future

    Aurora police hope to add facial recognition technology to crime-fighting tools – CBS News

    Aurora Police Aim to Boost Crime-Fighting with New Facial Recognition Technology

    Autonomous Solutions shows off cutting-edge technology for the public – Cache Valley Daily

    Autonomous Solutions Unveils Cutting-Edge Technology for the Public

    Amazon to Pay $2.5 Billion in Prime Membership Settlement – The New York Times

    Amazon to Pay $2.5 Billion in Prime Membership Settlement – The New York Times

    What are we really gaining from technology? – Fast Company

    What Are We Really Gaining from Technology?

    TOMI Environmental Solutions, Inc. Expands SteraMist iHP Technology Services in Healthcare Sector with New Provider Partnership – Quiver Quantitative

    TOMI Environmental Solutions Accelerates SteraMist iHP Technology Expansion in Healthcare with New Provider Partnership

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
Earth-News
No Result
View All Result
Home Science

Dogged Dark Matter Hunters Find New Hiding Places to Check

May 8, 2024
in Science
Dogged Dark Matter Hunters Find New Hiding Places to Check
Share on FacebookShare on Twitter

If or when SLAC’s planned project, the Light Dark Matter Experiment (LDMX), receives funding — a decision from the Department of Energy is expected in the next year or so — it will scan for light dark matter. The experiment is designed to accelerate electrons toward a target made of tungsten in End Station A. In the vast majority of collisions between a speeding electron and a tungsten nucleus, nothing interesting will happen. But rarely — on the order of once every 10,000 trillion hits, if light dark matter exists — the electron will instead interact with the nucleus via the unknown dark force to produce light dark matter, significantly draining the electron’s energy.

That 10,000 trillion is actually the worst-case scenario for light dark matter. It’s the lowest rate at which you can produce dark matter to match thermal-relic measurements. But Schuster says light dark matter might arise in upward of one in every 100 billion impacts. If so, then with the planned collision rate of the experiment, “that’s an inordinate amount of dark matter that you can produce.”

LDMX will need to run for three to five years, Nelson said, to definitively detect or rule out thermal relic light dark matter.

Ultralight Dark Matter

Other dark matter hunters have their experiments tuned for a different candidate. Ultralight dark matter is axionlike but no longer obliged to solve the strong CP problem. Because of this, it can be much more lightweight than ordinary axions, as light as 10 billionths of a trillionth of the electron’s mass. That tiny mass corresponds to a wave with a vast wavelength, as long as a small galaxy. In fact, the mass can’t be any smaller because if it were, the even longer wavelengths would mean that dark matter could not be concentrated around galaxies, as astronomers observe.

Ultralight dark matter is so incredibly minuscule that the dark-force particle needed to mediate its interactions is thought to be massive. “There’s no name given to these mediators,” Schuster said, “because it’s outside of any possible experiment. It has to be there [in the theory] for consistency, but we don’t worry about them.”

The origin story for ultralight dark matter particles depends on the particular theoretical model, but Toro says they would have arisen after the Big Bang, so the thermal-relic argument is irrelevant. There’s a different motivation for thinking about them. The particles naturally follow from string theory, a candidate for the fundamental theory of physics. These feeble particles arise from the ways that six tiny dimensions might be curled up or “compactified” at each point in our 4D universe, according to string theory. “The existence of light axionlike particles is strongly motivated by many kinds of string compactifications,” said Jessie Shelton, a physicist at the University of Illinois, “and it’s something that we should take seriously.”

Rather than trying to create dark matter using an accelerator, experiments looking for axions and ultralight dark matter listen for the dark matter that supposedly surrounds us. Based on its gravitational effects, dark matter seems to be distributed most densely near the Milky Way’s center, but one estimate suggests that even out here on Earth, we can expect dark matter to have a density of almost half a proton’s mass per cubic centimeter. Experiments try to detect this ever-present dark matter using powerful magnetic fields. In theory, the ethereal dark matter will occasionally absorb a photon from the strong magnetic field and convert it into a microwave photon, which an experiment can detect.

Two proposed experiments intend to pursue the dark frequencies: Stanford University’s DM Radio and the ADMX-EFR, or Axion Dark Matter Experiment Extended Frequency Range, at the University of Washington. Both experiments were originally conceived to search for axions, but are now being revised to scan for the lighter variants.

The biggest challenge for both experiments — which also await the Department of Energy’s funding decisions — lies in the faintness of the predicted microwave photons. The tiny signal requires all experimental noise to be removed other than the system’s inherent quantum jitter, a hurdle that researchers think they can overcome.

While these researchers await the faint signals of feeble particles, other dark matter ideas remain in play. Some theoretical physicists are reconsidering a long-sidelined idea that this invisible matter might take the form of primordial black holes created during the Big Bang. One more possibility is that the prevailing theory of gravity isn’t quite right. So far, however, competing gravity theories haven’t garnered much interest.

“At this point,” Schuster said, “let’s be honest, everybody is guessing.”

>>> Read full article>>>
Copyright for syndicated content belongs to the linked Source : Quanta Magazine – https://www.quantamagazine.org/dogged-dark-matter-hunters-find-new-hiding-places-to-check-20240507/

Tags: DoggedMatterscience
Previous Post

Belize, Jamaica and St. Vincent and the Grenadines eliminate mother-to-child transmission of HIV and Syphilis

Next Post

Cold Case: Scientific Sleuths Solve the Case of the Mysterious Giant Opening in Antarctic Sea Ice

Real-World Data Support Dual Benefit of Biologic Therapy for Hidradenitis Suppurativa – The American Journal of Managed Care® (AJMC®)

Real-World Data Support Dual Benefit of Biologic Therapy for Hidradenitis Suppurativa – The American Journal of Managed Care® (AJMC®)

September 28, 2025
Recession seems far off — that’s the good news. Yet the economy is also far from trouble-free. – MarketWatch

Recession seems far off — that’s the good news. Yet the economy is also far from trouble-free. – MarketWatch

September 28, 2025
TicketSmarter Fall Entertainment Guide – Eastern Illinois University Athletics

TicketSmarter Fall Entertainment Guide – Eastern Illinois University Athletics

September 28, 2025
Is Clover Health (CLOV) Using AI to Shift Its Healthcare Competitive Position? – simplywall.st

Is Clover Health (CLOV) Revolutionizing Healthcare with Cutting-Edge AI?

September 28, 2025
Iowa Matters Less Than Ever for Democrats, but They Can’t Quit It – The New York Times

Iowa Matters Less Than Ever for Democrats, but They Can’t Quit It – The New York Times

September 28, 2025
Little Spokane River Spill – Washington State Department of Ecology (.gov)

Little Spokane River Spill – Washington State Department of Ecology (.gov)

September 27, 2025
St. Pete City Council voices support to save shuttered Science Center – FOX 13 Tampa Bay

St. Pete City Council voices support to save shuttered Science Center – FOX 13 Tampa Bay

September 27, 2025
LDWF Announces Temporary Closure of the Nature & Science Center at Port Wonder – Louisiana Department of Wildlife and Fisheries (.gov)

Temporary Closure of the Nature & Science Center at Port Wonder Announced

September 27, 2025
The One Ingredient That Gives Chickpeas That Perfect Crunch – Yahoo

The Secret Ingredient That Makes Chickpeas Irresistibly Crunchy

September 27, 2025
How Sustainable Technology is Shaping a Greener Future – Technology Magazine

How Sustainable Technology is Driving the Revolution Toward a Greener Future

September 27, 2025

Categories

Archives

September 2025
M T W T F S S
1234567
891011121314
15161718192021
22232425262728
2930  
« Aug    
Earth-News.info

The Earth News is an independent English-language daily published Website from all around the World News

Browse by Category

  • Business (20,132)
  • Ecology (840)
  • Economy (861)
  • Entertainment (21,735)
  • General (17,281)
  • Health (9,904)
  • Lifestyle (873)
  • News (22,149)
  • People (862)
  • Politics (871)
  • Science (16,070)
  • Sports (21,360)
  • Technology (15,843)
  • World (843)

Recent News

Real-World Data Support Dual Benefit of Biologic Therapy for Hidradenitis Suppurativa – The American Journal of Managed Care® (AJMC®)

Real-World Data Support Dual Benefit of Biologic Therapy for Hidradenitis Suppurativa – The American Journal of Managed Care® (AJMC®)

September 28, 2025
Recession seems far off — that’s the good news. Yet the economy is also far from trouble-free. – MarketWatch

Recession seems far off — that’s the good news. Yet the economy is also far from trouble-free. – MarketWatch

September 28, 2025
  • About
  • Advertise
  • Privacy & Policy
  • Contact

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

Go to mobile version