Forward-backward asymmetries of $(B^-, B^+)$, $(\Lambda_b, \bar\Lambda_b)$ and $(\Lambda,\bar\Lambda)$ in $p\bar p$ collisions at D0

Abbott, B.

doi:10.22323/1.247.0131

Cited by 14 publications

(36 citation statements)

References 7 publications

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“…Introduction. Over the past several years, the twin Advanced LIGO observatories [1] have been detecting gravitational wave (GW) signals from coalescences of compact binary objects on a regular basis [2][3][4][5][6]. Meanwhile Advanced Virgo [7] has joined the global network of detectors, leading to further detections, including a binary neutron star inspiral [8].…”

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confidence: 99%

“…Thanks to these observations, general relativity (GR) has been subjected to a range of tests. For the first time we had access to the genuinely strong-field dynamics of the theory [2,4,5,10,11]. Possible dispersion of gravitational waves was strongly constrained, leading to stringent upper bounds on the mass of the graviton and on local Lorentz invariance violations [5,10,11].…”

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confidence: 99%

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A morphology-independent search for gravitational wave echoes in data from the first and second observing runs of Advanced LIGO and Advanced Virgo

et al. 2020

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Gravitational wave echoes have been proposed as a smoking-gun signature of exotic compact objects with near-horizon structure. Recently there have been observational claims that echoes are indeed present in stretches of data from Advanced LIGO and Advanced Virgo immediately following gravitational wave signals from presumed binary black hole mergers, as well as a binary neutron star merger. In this paper we deploy a morphology-independent search algorithm for echoes introduced in Tsang et al., Phys. Rev. D 98, 024023 (2018), which (a) is able to accurately reconstruct a possible echoes signal with minimal assumptions about their morphology, and (b) computes Bayesian evidences for the hypotheses that the data contain a signal, an instrumental glitch, or just stationary, Gaussian noise. Here we apply this analysis method to all the significant events in the first Gravitational Wave Transient Catalog (GWTC-1), which comprises the signals from binary black hole and binary neutron star coalescences found during the first and second observing runs of Advanced LIGO and Advanced Virgo. In all cases, the ratios of evidences for signal versus noise and signal versus glitch do not rise above their respective "background distributions" obtained from detector noise, the smallest p-value being 3% (for event GW170823). Hence we find no statistically significant evidence for echoes in GWTC-1.

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confidence: 99%

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confidence: 99%

A morphology-independent search for gravitational wave echoes in data from the first and second observing runs of Advanced LIGO and Advanced Virgo

et al. 2020

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“…Such possibility may be related to the heavy binary neutron star mergers observed in GW190425 (Abbott et al 2020), which is heavier than any known binary neutron stars in our galaxy 4 . It was suggested that tight binaries exist in our galaxy, because shortperiod binaries are difficult to observe with current methods.…”

Section: Spin Precession Of Frb 180916j0158+65mentioning

confidence: 82%

“…It was suggested that tight binaries exist in our galaxy, because shortperiod binaries are difficult to observe with current methods. On the other hand, if this heavy neutron star pair is formed within a fast-merging channel, this may also account for the potential bias towards detection (Abbott et al 2020;Romero-Shaw et al 2020). Safarzadeh et al (2020) argued that this leads to theoretical difficulties as traditional fastmerging channels (such as case BB unstable mass transfer) are unable to produce as frequent neutron star mergers.…”

Section: Spin Precession Of Frb 180916j0158+65mentioning

confidence: 99%

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Orbit-induced Spin Precession as a Possible Origin for Periodicity in Periodically Repeating Fast Radio Bursts

Yang

Zou

2020

ApJL

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FRB 180916.J0158+65 has been found to repeatedly emit fast radio bursts with the period in roughly 16 days. We propose that such periodicity comes from orbital-induced, spin precession of the emitter, which is possibly a neutron star. Depending on the mass of the companion, the binary period ranges from several hundreds to thousands of seconds. Such tight binaries have a relatively short lifetime, and they are not likely the products of gravitational decay from wide binaries. We comment on the relation to GW190425 and the possibility in LISA and LIGO detections.

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Strategies for Finding Prompt Radio Counterparts to Gravitational Wave Transients with the Murchison Widefield Array

Kaplan

Murphy

Rowlinson

et al. 2016

Publ. Astron. Soc. Aust.

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We present and evaluate several strategies to search for prompt, low-frequency radio emission associated with gravitational wave transients using the Murchison Widefield Array (MWA). As we are able to repoint the MWA on timescales of tens of seconds, we can search for the dispersed radio signal that has been predicted to originate along with or shortly after a neutron star-neutron star merger. We find that given the large, 600 deg 2 instantaneous field-of-view of the MWA we can cover a significant fraction of the predicted gravitational wave error region, although due to the complicated geometry of the latter we only cover > 50% of the error region for approximately 5% of events, and roughly 15% of events will be located < 10• from the MWA pointing center such that they will be covered in the radio images. For optimal conditions our limiting flux density for a 10-s long transient would be 0.1 Jy, increasing to about 1 Jy for a wider range of events. This corresponds to luminosity limits of 10 38−39 erg s −1 based on expectations for the distances of the gravitational wave transients, which should be sufficient to detect or significantly constrain a range of models for prompt emission.

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Forward-backward asymmetries of $(B^-, B^+)$, $(\Lambda_b, \bar\Lambda_b)$ and $(\Lambda,\bar\Lambda)$ in $p\bar p$ collisions at D0

Abstract: Forward-backward asymmetries of (B − ,B +),(Λ b ,Λ b) and (Λ,Λ) in pp collisions at D0.

Cited by 14 publications

References 7 publications

A morphology-independent search for gravitational wave echoes in data from the first and second observing runs of Advanced LIGO and Advanced Virgo

A morphology-independent search for gravitational wave echoes in data from the first and second observing runs of Advanced LIGO and Advanced Virgo

Orbit-induced Spin Precession as a Possible Origin for Periodicity in Periodically Repeating Fast Radio Bursts

Strategies for Finding Prompt Radio Counterparts to Gravitational Wave Transients with the Murchison Widefield Array

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