The BaBar Homepage

The BaBar detector was built at SLAC to study the millions of B mesons produced by the PEP-II storage ring.
The BaBar Collaboration consists of physicists and engineers from institutions in several countries.

BaBar Collaboration Statement on the War in Ukraine

Accessing the Babar dataset via the BaBar Associates open-access program

To contact the BaBar Management Team: [Click here]
To invite BaBar speakers to present results at physics conferences: [Click here]
BaBar Management Team
Michael Roney (Spokesperson)
Fabio Anulli (Physics Coordinator), Frank Porter (Deputy Physics Coordinator)
Tina Cartaro and Marcus Ebert (Computing Coordinators)

Janis McKenna (Speakers Bureau Chair)
William Gary (Publication Board Chair)
Fabrizio Bianchi (Collaboration Council Chair)

BaBar Collaboration Meetings 2025 : March 19 (remote) June 6 (hybrid, in person at FPCP in Cincinnati, Ohio, USA) December 10 (remote)
External links: [HFLAV] [PDG] [HEP preprints]

List of all published BaBar physics papers: [INSPIRE]

Recent published BaBar papers and submissions
(Listing of all publications)


2025-02-10	A search for baryogenesis and dark matter in \(B^+ \to \Lambda_c^+ + invisible\) decays	PRD 111, L031101 (2025)
2024-08-20	Model independent extraction of form factors and \(\|V_{cb}\|\) in \(\bar{B} \to Dl^-\bar{\nu_l}\) with hadronic tagging at BaBar	PRD 110, 032018 (2023)
2023-12-21	Study of additional radiation in the initial-state-radiation processes \(e^+e^- \to \mu^+\mu^-\gamma\) and \(e^+e^- \to \pi^+\pi^-\gamma\) in the BaBar experiment	PRD 108, L111103 (2023)
2023-11-16	Search for baryogenesis and dark matter in \(B^+ \to \psi_D + p\) decays at BaBar	PRL 131, 201801 (2023)
2023-11-02	Precision \(e^-\) beam polarimetry at an \(e^+e^-\) B-factory using \(\tau\)-pair events	PRD 108, 092001 (2023)
2023-05-03	Search for B mesogenesis at BABAR	PRD 107, 092001 (2023)
2023-04-04	Study of the reactions \(e^+e^- \to K^+K^-\pi^0\pi^0\pi^0, e^+e^- \to K_S K^+\pi^-\pi^0\pi^0,\) and \(e^+e^- \to K_S K^+\pi^-\pi^+\pi^-\) at center-of-mass energies from threshold to 4.5 GeV using initial-state radiation	PRD 107, 072001 (2023)
2023-03-23	Search for heavy neutral leptons using tau decays at BaBar	PRD 107, 052009 (2023)
2022-04-01	Search for an axion-like particle in B meson decays	PRL 128, 131802 (2022)
2022-03-03	Search for lepton flavor violation in \(\Upsilon(3S) \to e \mu\)	PRL 128, 091804 (2022)

BaBar Milestones
March 2024	Flavor Physics Symbosium Celebrating BaBar's 30th Anniversary Photos of the event can be found here.
April 2023	The BaBar Collaboration publishes its 600 paper.
December 2018	BaBar Collaboration Meeting and 25th anniversary celebration is at SLAC on December 11-13, 2018. 25th anniversary event registration and agenda (Indico), Collaboration Meeting page and registration().
November 2017	BaBar's search for invisibly decaying dark photons highlighted in LBNL press release Symmetry and Interactions
August 2017	Congratulations to BaBar's Blair Ratcliff for winning the 2017 APS Division of Particles and Fields Instrumentation Award "For the development of novel detectors exploiting the Cherenkov radiation to enhance the capabilities of frontier experiments devoted to the study of beauty and charm hadrons and atmospheric neutrino." SLAC press release
June/July 2017	The lepton universality tension in B -> D(*) tau nu, recently reviewed in a Nature article, was subsequently followed up with coverage in Scientific American, Nature Correspondence and Science Friday Broadcast of 21 July 2017.
January 2016	Congratulations to PEP-II and BaBar's Jonathan Dorfan and David Hitlin, along with KEK-B and Belle's Stephen Olsen and Fumihiko Takasaki, for winning the 2016 APS W.K.H Panofsky Prize in Experimental Particle Physics. Celebration of Dorfan and Hitlin Panofsky Prize: Wednesday, 13 January 2016, SLAC Meeting Agenda
November 2014	Viewpoint article on our dark photon search published in Physical Review Letters. .
June 2014	Physics Of B-Factories Book; Published as Eur.Phys.J. C74 (2014) 3026; (α, β, γ version)
May 2013	Babar NIM Paper Update Project Home Page, published as NIMA 729, 615-701, 2013, arXiv:1305.3560
May 2012	BABAR Data in Tension with the Standard Model; paper: arXiv:1205.5442, published as Phys. Rev. Lett. 109, 101802 (2012)
October 2008	The 2008 Nobel Prize in Physics was awarded to Kobayashi, Maskawa, and Nambu for their work on symmetry breaking and CP violation. Understanding the origins of CP violation is one of the primary goals of the experimental programs of both the BaBar and Belle experiments, which were mentioned by name in the Nobel press release. The BaBar Collaboration has prepared a statement explaining the meaning and importance of this work. [Poster Link] See also related articles at: SLAC Today Nature Science Symmetry Magazine Videos of the Nobel lectures are also available. See Kobayashi, Maskawa, and Nambu.
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Last updated: Content last changed: February 10 2025 10:43:24.